Merge branch 'main' into niupre/TestDeferredDropAndCleanup

.circleci/config.yml

@@ -22,6 +22,14 @@ parameters:
   style_checker_tools_version:
     type: string
     default: '0.8.18'
+  flaky_test:
+    type: string
+    default: ''
+  flaky_test_make:
+    type: string
+    default: check-minimal
+
+
 jobs:
   build:
     description: Build the citus extension
@@ -529,9 +537,116 @@ jobs:
           name: install dependencies and run ch_benchmark tests
           no_output_timeout: 20m
 
+  test-flakyness:
+    description: Runs a test multiple times to see if it's flaky
+    parallelism: 32
+    parameters:
+      pg_major:
+        description: 'postgres major version'
+        type: integer
+      image:
+        description: 'docker image to use as for the tests'
+        type: string
+        default: citus/exttester
+      image_tag:
+        description: 'docker image tag to use'
+        type: string
+      make:
+        description: 'make target'
+        type: string
+        default: check-minimal
+      test:
+        description: 'the test that should be run multiple times'
+        type: string
+      runs:
+        description: 'number of times that the test should be run in total'
+        type: integer
+        default: 1600
+    docker:
+      - image: '<< parameters.image >>:<< parameters.image_tag >><< pipeline.parameters.image_suffix >>'
+    working_directory: /home/circleci/project
+    resource_class: small
+    steps:
+      - checkout
+      - attach_workspace:
+          at: .
+      - run:
+          name: 'Install Extension'
+          command: |
+            tar xfv "${CIRCLE_WORKING_DIRECTORY}/install-${PG_MAJOR}.tar" --directory /
+      - run:
+          name: 'Configure'
+          command: |
+            chown -R circleci .
+            gosu circleci ./configure --without-pg-version-check
+      - run:
+          name: 'Enable core dumps'
+          command: |
+            ulimit -c unlimited
+      - run:
+          name: 'Run minimal tests'
+          command: |
+            gosu circleci make -C src/test/regress << parameters.make >> EXTRA_TESTS="$(for i in $(seq << parameters.runs >> | circleci tests split); do echo -n '<< parameters.test >> ' ; done)"
+          no_output_timeout: 2m
+      - run:
+          name: 'Regressions'
+          command: |
+            if [ -f "src/test/regress/regression.diffs" ]; then
+              cat src/test/regress/regression.diffs
+              exit 1
+            fi
+          when: on_fail
+      - run:
+          name: 'Copy coredumps'
+          command: |
+            mkdir -p /tmp/core_dumps
+            if ls core.* 1> /dev/null 2>&1; then
+                cp core.* /tmp/core_dumps
+            fi
+          when: on_fail
+      - store_artifacts:
+          name: 'Save regressions'
+          path: src/test/regress/regression.diffs
+      - store_artifacts:
+          name: 'Save mitmproxy output (failure test specific)'
+          path: src/test/regress/proxy.output
+      - store_artifacts:
+          name: 'Save results'
+          path: src/test/regress/results/
+      - store_artifacts:
+          name: 'Save core dumps'
+          path: /tmp/core_dumps
+      - store_artifacts:
+          name: 'Save coordinator log'
+          path: src/test/regress/tmp_check/master/log
+      - store_artifacts:
+          name: 'Save worker1 log'
+          path: src/test/regress/tmp_check/worker.57637/log
+      - store_artifacts:
+          name: 'Save worker2 log'
+          path: src/test/regress/tmp_check/worker.57638/log
+
 workflows:
   version: 2
+  flaky_test_debugging:
+    when: << pipeline.parameters.flaky_test >>
+    jobs:
+      - build:
+          name: build-flaky-15
+          pg_major: 15
+          image_tag: '<< pipeline.parameters.pg15_version >>'
+
+      - test-flakyness:
+          name: 'test-15_flaky'
+          pg_major: 15
+          image_tag: '<< pipeline.parameters.pg15_version >>'
+          requires: [build-flaky-15]
+          make: '<< pipeline.parameters.flaky_test_make >>'
+          test: '<< pipeline.parameters.flaky_test >>'
+
   build_and_test:
+    when:
+      not: << pipeline.parameters.flaky_test >>
     jobs:
       - build:
           name: build-13

src/backend/columnar/columnar_customscan.c

@@ -1303,6 +1303,12 @@ AddColumnarScanPath(PlannerInfo *root, RelOptInfo *rel, RangeTblEntry *rte,
 
 	cpath->methods = &ColumnarScanPathMethods;
 
+#if (PG_VERSION_NUM >= PG_VERSION_15)
+
+	/* necessary to avoid extra Result node in PG15 */
+	cpath->flags = CUSTOMPATH_SUPPORT_PROJECTION;
+#endif
+
 	/*
 	 * populate generic path information
 	 */
@@ -1545,6 +1551,12 @@ ColumnarScanPath_PlanCustomPath(PlannerInfo *root,
 	cscan->scan.plan.targetlist = list_copy(tlist);
 	cscan->scan.scanrelid = best_path->path.parent->relid;
 
+#if (PG_VERSION_NUM >= 150000)
+
+	/* necessary to avoid extra Result node in PG15 */
+	cscan->flags = CUSTOMPATH_SUPPORT_PROJECTION;
+#endif
+
 	return (Plan *) cscan;
 }
 

src/backend/distributed/commands/create_distributed_table.c

@@ -139,6 +139,14 @@ static Oid DropFKeysAndUndistributeTable(Oid relationId);
 static void DropFKeysRelationInvolvedWithTableType(Oid relationId, int tableTypeFlag);
 static void CopyLocalDataIntoShards(Oid relationId);
 static List * TupleDescColumnNameList(TupleDesc tupleDescriptor);
+
+#if (PG_VERSION_NUM >= PG_VERSION_15)
+static bool DistributionColumnUsesNumericColumnNegativeScale(TupleDesc relationDesc,
+															 Var *distributionColumn);
+static int numeric_typmod_scale(int32 typmod);
+static bool is_valid_numeric_typmod(int32 typmod);
+#endif
+
 static bool DistributionColumnUsesGeneratedStoredColumn(TupleDesc relationDesc,
 														Var *distributionColumn);
 static bool CanUseExclusiveConnections(Oid relationId, bool localTableEmpty);
@@ -1681,6 +1689,20 @@ EnsureRelationCanBeDistributed(Oid relationId, Var *distributionColumn,
 								  "AS (...) STORED.")));
 	}
 
+#if (PG_VERSION_NUM >= PG_VERSION_15)
+
+	/* verify target relation is not distributed by a column of type numeric with negative scale */
+	if (distributionMethod != DISTRIBUTE_BY_NONE &&
+		DistributionColumnUsesNumericColumnNegativeScale(relationDesc,
+														 distributionColumn))
+	{
+		ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+						errmsg("cannot distribute relation: %s", relationName),
+						errdetail("Distribution column must not use numeric type "
+								  "with negative scale")));
+	}
+#endif
+
 	/* check for support function needed by specified partition method */
 	if (distributionMethod == DISTRIBUTE_BY_HASH)
 	{
@@ -2401,6 +2423,59 @@ RelationUsesIdentityColumns(TupleDesc relationDesc)
 }
 
 
+#if (PG_VERSION_NUM >= PG_VERSION_15)
+
+/*
+ * is_valid_numeric_typmod checks if the typmod value is valid
+ *
+ * Because of the offset, valid numeric typmods are at least VARHDRSZ
+ *
+ * Copied from PG. See numeric.c for understanding how this works.
+ */
+static bool
+is_valid_numeric_typmod(int32 typmod)
+{
+	return typmod >= (int32) VARHDRSZ;
+}
+
+
+/*
+ * numeric_typmod_scale extracts the scale from a numeric typmod.
+ *
+ * Copied from PG. See numeric.c for understanding how this works.
+ *
+ */
+static int
+numeric_typmod_scale(int32 typmod)
+{
+	return (((typmod - VARHDRSZ) & 0x7ff) ^ 1024) - 1024;
+}
+
+
+/*
+ * DistributionColumnUsesNumericColumnNegativeScale returns whether a given relation uses
+ * numeric data type with negative scale on distribution column
+ */
+static bool
+DistributionColumnUsesNumericColumnNegativeScale(TupleDesc relationDesc,
+												 Var *distributionColumn)
+{
+	Form_pg_attribute attributeForm = TupleDescAttr(relationDesc,
+													distributionColumn->varattno - 1);
+
+	if (attributeForm->atttypid == NUMERICOID &&
+		is_valid_numeric_typmod(attributeForm->atttypmod) &&
+		numeric_typmod_scale(attributeForm->atttypmod) < 0)
+	{
+		return true;
+	}
+
+	return false;
+}
+
+
+#endif
+
 /*
  * DistributionColumnUsesGeneratedStoredColumn returns whether a given relation uses
  * GENERATED ALWAYS AS (...) STORED on distribution column

src/backend/distributed/commands/distribute_object_ops.c

@@ -1176,7 +1176,7 @@ static DistributeObjectOps View_Rename = {
 static DistributeObjectOps Trigger_Rename = {
 	.deparse = NULL,
 	.qualify = NULL,
-	.preprocess = NULL,
+	.preprocess = PreprocessAlterTriggerRenameStmt,
 	.operationType = DIST_OPS_ALTER,
 	.postprocess = PostprocessAlterTriggerRenameStmt,
 	.address = NULL,

src/backend/distributed/commands/trigger.c

@@ -53,6 +53,9 @@ static void ExtractDropStmtTriggerAndRelationName(DropStmt *dropTriggerStmt,
 												  char **relationName);
 static void ErrorIfDropStmtDropsMultipleTriggers(DropStmt *dropTriggerStmt);
 static int16 GetTriggerTypeById(Oid triggerId);
+#if (PG_VERSION_NUM < PG_VERSION_15)
+static void ErrorOutIfCloneTrigger(Oid tgrelid, const char *tgname);
+#endif
 
 
 /* GUC that overrides trigger checks for distributed tables and reference tables */
@@ -319,6 +322,40 @@ CreateTriggerEventExtendNames(CreateTrigStmt *createTriggerStmt, char *schemaNam
 }
 
 
+/*
+ * PreprocessAlterTriggerRenameStmt is called before a ALTER TRIGGER RENAME
+ * command has been executed by standard process utility. This function errors
+ * out if we are trying to rename a child trigger on a partition of a distributed
+ * table. In PG15, this is not allowed anyway.
+ */
+List *
+PreprocessAlterTriggerRenameStmt(Node *node, const char *queryString,
+								 ProcessUtilityContext processUtilityContext)
+{
+#if (PG_VERSION_NUM < PG_VERSION_15)
+	RenameStmt *renameTriggerStmt = castNode(RenameStmt, node);
+	Assert(renameTriggerStmt->renameType == OBJECT_TRIGGER);
+
+	RangeVar *relation = renameTriggerStmt->relation;
+
+	bool missingOk = false;
+	Oid relationId = RangeVarGetRelid(relation, ALTER_TRIGGER_LOCK_MODE, missingOk);
+
+	if (!IsCitusTable(relationId))
+	{
+		return NIL;
+	}
+
+	EnsureCoordinator();
+	ErrorOutForTriggerIfNotSupported(relationId);
+
+	ErrorOutIfCloneTrigger(relationId, renameTriggerStmt->subname);
+#endif
+
+	return NIL;
+}
+
+
 /*
  * PostprocessAlterTriggerRenameStmt is called after a ALTER TRIGGER RENAME
  * command has been executed by standard process utility. This function errors
@@ -611,6 +648,64 @@ ErrorOutForTriggerIfNotSupported(Oid relationId)
 }
 
 
+#if (PG_VERSION_NUM < PG_VERSION_15)
+
+/*
+ * ErrorOutIfCloneTrigger is a helper function to error
+ * out if we are trying to rename a child trigger on a
+ * partition of a distributed table.
+ * A lot of this code is borrowed from PG15 because
+ * renaming clone triggers isn't allowed in PG15 anymore.
+ */
+static void
+ErrorOutIfCloneTrigger(Oid tgrelid, const char *tgname)
+{
+	HeapTuple tuple;
+	ScanKeyData key[2];
+
+	Relation tgrel = table_open(TriggerRelationId, RowExclusiveLock);
+
+	/*
+	 * Search for the trigger to modify.
+	 */
+	ScanKeyInit(&key[0],
+				Anum_pg_trigger_tgrelid,
+				BTEqualStrategyNumber, F_OIDEQ,
+				ObjectIdGetDatum(tgrelid));
+	ScanKeyInit(&key[1],
+				Anum_pg_trigger_tgname,
+				BTEqualStrategyNumber, F_NAMEEQ,
+				CStringGetDatum(tgname));
+	SysScanDesc tgscan = systable_beginscan(tgrel, TriggerRelidNameIndexId, true,
+											NULL, 2, key);
+
+	if (HeapTupleIsValid(tuple = systable_getnext(tgscan)))
+	{
+		Form_pg_trigger trigform = (Form_pg_trigger) GETSTRUCT(tuple);
+
+		/*
+		 * If the trigger descends from a trigger on a parent partitioned
+		 * table, reject the rename.
+		 * Appended shard ids to find the trigger on the partition's shards
+		 * are not correct. Hence we would fail to find the trigger on the
+		 * partition's shard.
+		 */
+		if (OidIsValid(trigform->tgparentid))
+		{
+			ereport(ERROR, (
+						errmsg(
+							"cannot rename child triggers on distributed partitions")));
+		}
+	}
+
+	systable_endscan(tgscan);
+	table_close(tgrel, RowExclusiveLock);
+}
+
+
+#endif
+
+
 /*
  * GetDropTriggerStmtRelation takes a DropStmt for a trigger object and returns
  * RangeVar for the relation that owns the trigger.

src/backend/distributed/executor/adaptive_executor.c

@@ -1421,7 +1421,7 @@ DistributedExecutionRequiresRollback(List *taskList)
 		 * Do not check SelectOpensTransactionBlock, always open transaction block
 		 * if SELECT FOR UPDATE is executed inside a distributed transaction.
 		 */
-		return IsTransactionBlock();
+		return IsMultiStatementTransaction();
 	}
 
 	if (ReadOnlyTask(task->taskType))

src/backend/distributed/executor/citus_custom_scan.c

@@ -31,6 +31,7 @@
 #include "distributed/multi_server_executor.h"
 #include "distributed/multi_router_planner.h"
 #include "distributed/query_stats.h"
+#include "distributed/shard_utils.h"
 #include "distributed/subplan_execution.h"
 #include "distributed/worker_log_messages.h"
 #include "distributed/worker_protocol.h"
@@ -67,6 +68,9 @@ static void CitusEndScan(CustomScanState *node);
 static void CitusReScan(CustomScanState *node);
 static void SetJobColocationId(Job *job);
 static void EnsureForceDelegationDistributionKey(Job *job);
+static void EnsureAnchorShardsInJobExist(Job *job);
+static bool AnchorShardsInTaskListExist(List *taskList);
+static void TryToRerouteFastPathModifyQuery(Job *job);
 
 
 /* create custom scan methods for all executors */
@@ -406,6 +410,19 @@ CitusBeginModifyScan(CustomScanState *node, EState *estate, int eflags)
 		/* prevent concurrent placement changes */
 		AcquireMetadataLocks(workerJob->taskList);
 
+		/*
+		 * In case of a split, the shard might no longer be available. In that
+		 * case try to reroute. We can only do this for fast path queries.
+		 */
+		if (currentPlan->fastPathRouterPlan &&
+			!AnchorShardsInTaskListExist(workerJob->taskList))
+		{
+			TryToRerouteFastPathModifyQuery(workerJob);
+		}
+
+		/* ensure there is no invalid shard */
+		EnsureAnchorShardsInJobExist(workerJob);
+
 		/* modify tasks are always assigned using first-replica policy */
 		workerJob->taskList = FirstReplicaAssignTaskList(workerJob->taskList);
 	}
@@ -440,6 +457,65 @@ CitusBeginModifyScan(CustomScanState *node, EState *estate, int eflags)
 }
 
 
+/*
+ * TryToRerouteFastPathModifyQuery tries to reroute non-existent shards in given job if it finds any such shard,
+ * only for fastpath queries.
+ *
+ * Should only be called if the job belongs to a fastpath modify query
+ */
+static void
+TryToRerouteFastPathModifyQuery(Job *job)
+{
+	if (job->jobQuery->commandType == CMD_INSERT)
+	{
+		RegenerateTaskListForInsert(job);
+	}
+	else
+	{
+		RegenerateTaskForFasthPathQuery(job);
+		RebuildQueryStrings(job);
+	}
+}
+
+
+/*
+ * EnsureAnchorShardsInJobExist ensures all shards are valid in job.
+ * If it finds a non-existent shard in given job, it throws an error.
+ */
+static void
+EnsureAnchorShardsInJobExist(Job *job)
+{
+	if (!AnchorShardsInTaskListExist(job->taskList))
+	{
+		ereport(ERROR, (errcode(ERRCODE_T_R_SERIALIZATION_FAILURE),
+						errmsg("shard for the given value does not exist"),
+						errdetail(
+							"A concurrent shard split may have moved the data into a new set of shards."),
+						errhint("Retry the query.")));
+	}
+}
+
+
+/*
+ * AnchorShardsInTaskListExist checks whether all the anchor shards in the task list
+ * still exist.
+ */
+static bool
+AnchorShardsInTaskListExist(List *taskList)
+{
+	Task *task = NULL;
+	foreach_ptr(task, taskList)
+	{
+		if (!ShardExists(task->anchorShardId))
+		{
+			return false;
+		}
+	}
+
+	return true;
+}
+
+
 /*
  * ModifyJobNeedsEvaluation checks whether the functions and parameters in the job query
  * need to be evaluated before we can build task query strings.

src/backend/distributed/metadata/metadata_cache.c

@@ -233,7 +233,7 @@ static ScanKeyData DistObjectScanKey[3];
 
 /* local function forward declarations */
 static HeapTuple PgDistPartitionTupleViaCatalog(Oid relationId);
-static ShardIdCacheEntry * LookupShardIdCacheEntry(int64 shardId);
+static ShardIdCacheEntry * LookupShardIdCacheEntry(int64 shardId, bool missingOk);
 static CitusTableCacheEntry * BuildCitusTableCacheEntry(Oid relationId);
 static void BuildCachedShardList(CitusTableCacheEntry *cacheEntry);
 static void PrepareWorkerNodeCache(void);
@@ -282,10 +282,11 @@ static Oid LookupEnumValueId(Oid typeId, char *valueName);
 static void InvalidateCitusTableCacheEntrySlot(CitusTableCacheEntrySlot *cacheSlot);
 static void InvalidateDistTableCache(void);
 static void InvalidateDistObjectCache(void);
-static void InitializeTableCacheEntry(int64 shardId);
+static bool InitializeTableCacheEntry(int64 shardId, bool missingOk);
 static bool IsCitusTableTypeInternal(char partitionMethod, char replicationModel,
 									 CitusTableType tableType);
-static bool RefreshTableCacheEntryIfInvalid(ShardIdCacheEntry *shardEntry);
+static bool RefreshTableCacheEntryIfInvalid(ShardIdCacheEntry *shardEntry, bool
+											missingOk);
 
 static Oid DistAuthinfoRelationId(void);
 static Oid DistAuthinfoIndexId(void);
@@ -783,7 +784,8 @@ CitusTableList(void)
 ShardInterval *
 LoadShardInterval(uint64 shardId)
 {
-	ShardIdCacheEntry *shardIdEntry = LookupShardIdCacheEntry(shardId);
+	bool missingOk = false;
+	ShardIdCacheEntry *shardIdEntry = LookupShardIdCacheEntry(shardId, missingOk);
 	CitusTableCacheEntry *tableEntry = shardIdEntry->tableEntry;
 	int shardIndex = shardIdEntry->shardIndex;
 
@@ -800,13 +802,33 @@ LoadShardInterval(uint64 shardId)
 }
 
 
+/*
+ * ShardExists returns whether given shard exists or not. It fails if missingOk is false
+ * and shard is not found.
+ */
+bool
+ShardExists(uint64 shardId)
+{
+	bool missingOk = true;
+	ShardIdCacheEntry *shardIdEntry = LookupShardIdCacheEntry(shardId, missingOk);
+
+	if (!shardIdEntry)
+	{
+		return false;
+	}
+
+	return true;
+}
+
+
 /*
  * RelationIdOfShard returns the relationId of the given shardId.
  */
 Oid
 RelationIdForShard(uint64 shardId)
 {
-	ShardIdCacheEntry *shardIdEntry = LookupShardIdCacheEntry(shardId);
+	bool missingOk = false;
+	ShardIdCacheEntry *shardIdEntry = LookupShardIdCacheEntry(shardId, missingOk);
 	CitusTableCacheEntry *tableEntry = shardIdEntry->tableEntry;
 	return tableEntry->relationId;
 }
@@ -819,7 +841,8 @@ RelationIdForShard(uint64 shardId)
 bool
 ReferenceTableShardId(uint64 shardId)
 {
-	ShardIdCacheEntry *shardIdEntry = LookupShardIdCacheEntry(shardId);
+	bool missingOk = false;
+	ShardIdCacheEntry *shardIdEntry = LookupShardIdCacheEntry(shardId, missingOk);
 	CitusTableCacheEntry *tableEntry = shardIdEntry->tableEntry;
 	return IsCitusTableTypeCacheEntry(tableEntry, REFERENCE_TABLE);
 }
@@ -837,7 +860,8 @@ DistributedTableShardId(uint64 shardId)
 		return false;
 	}
 
-	ShardIdCacheEntry *shardIdEntry = LookupShardIdCacheEntry(shardId);
+	bool missingOk = false;
+	ShardIdCacheEntry *shardIdEntry = LookupShardIdCacheEntry(shardId, missingOk);
 	CitusTableCacheEntry *tableEntry = shardIdEntry->tableEntry;
 	return IsCitusTableTypeCacheEntry(tableEntry, DISTRIBUTED_TABLE);
 }
@@ -852,7 +876,8 @@ DistributedTableShardId(uint64 shardId)
 GroupShardPlacement *
 LoadGroupShardPlacement(uint64 shardId, uint64 placementId)
 {
-	ShardIdCacheEntry *shardIdEntry = LookupShardIdCacheEntry(shardId);
+	bool missingOk = false;
+	ShardIdCacheEntry *shardIdEntry = LookupShardIdCacheEntry(shardId, missingOk);
 	CitusTableCacheEntry *tableEntry = shardIdEntry->tableEntry;
 	int shardIndex = shardIdEntry->shardIndex;
 
@@ -887,7 +912,8 @@ LoadGroupShardPlacement(uint64 shardId, uint64 placementId)
 ShardPlacement *
 LoadShardPlacement(uint64 shardId, uint64 placementId)
 {
-	ShardIdCacheEntry *shardIdEntry = LookupShardIdCacheEntry(shardId);
+	bool missingOk = false;
+	ShardIdCacheEntry *shardIdEntry = LookupShardIdCacheEntry(shardId, missingOk);
 	CitusTableCacheEntry *tableEntry = shardIdEntry->tableEntry;
 	int shardIndex = shardIdEntry->shardIndex;
 	GroupShardPlacement *groupPlacement = LoadGroupShardPlacement(shardId, placementId);
@@ -910,7 +936,8 @@ ShardPlacementOnGroupIncludingOrphanedPlacements(int32 groupId, uint64 shardId)
 {
 	ShardPlacement *placementOnNode = NULL;
 
-	ShardIdCacheEntry *shardIdEntry = LookupShardIdCacheEntry(shardId);
+	bool missingOk = false;
+	ShardIdCacheEntry *shardIdEntry = LookupShardIdCacheEntry(shardId, missingOk);
 	CitusTableCacheEntry *tableEntry = shardIdEntry->tableEntry;
 	int shardIndex = shardIdEntry->shardIndex;
 	GroupShardPlacement *placementArray =
@@ -1130,7 +1157,8 @@ ShardPlacementListIncludingOrphanedPlacements(uint64 shardId)
 {
 	List *placementList = NIL;
 
-	ShardIdCacheEntry *shardIdEntry = LookupShardIdCacheEntry(shardId);
+	bool missingOk = false;
+	ShardIdCacheEntry *shardIdEntry = LookupShardIdCacheEntry(shardId, missingOk);
 	CitusTableCacheEntry *tableEntry = shardIdEntry->tableEntry;
 	int shardIndex = shardIdEntry->shardIndex;
 
@@ -1170,15 +1198,24 @@ ShardPlacementListIncludingOrphanedPlacements(uint64 shardId)
  * build the cache entry. Afterwards we know that the shard has to be in the
  * cache if it exists. If the shard does *not* exist, this function errors
  * (because LookupShardRelationFromCatalog errors out).
+ *
+ * If missingOk is true and the shard cannot be found, the function returns false.
  */
-static void
+static bool
-InitializeTableCacheEntry(int64 shardId)
+InitializeTableCacheEntry(int64 shardId, bool missingOk)
 {
-	bool missingOk = false;
 	Oid relationId = LookupShardRelationFromCatalog(shardId, missingOk);
 
+	if (!OidIsValid(relationId))
+	{
+		Assert(missingOk);
+		return false;
+	}
+
 	/* trigger building the cache for the shard id */
 	GetCitusTableCacheEntry(relationId); /* lgtm[cpp/return-value-ignored] */
+
+	return true;
 }
 
 
@@ -1188,7 +1225,7 @@ InitializeTableCacheEntry(int64 shardId)
  * entry in the cache and false if it didn't.
  */
 static bool
-RefreshTableCacheEntryIfInvalid(ShardIdCacheEntry *shardEntry)
+RefreshTableCacheEntryIfInvalid(ShardIdCacheEntry *shardEntry, bool missingOk)
 {
 	/*
 	 * We might have some concurrent metadata changes. In order to get the changes,
@@ -1200,7 +1237,8 @@ RefreshTableCacheEntryIfInvalid(ShardIdCacheEntry *shardEntry)
 		return false;
 	}
 	Oid oldRelationId = shardEntry->tableEntry->relationId;
-	Oid currentRelationId = LookupShardRelationFromCatalog(shardEntry->shardId, false);
+	Oid currentRelationId = LookupShardRelationFromCatalog(shardEntry->shardId,
+														   missingOk);
 
 	/*
 	 * The relation OID to which the shard belongs could have changed,
@@ -1215,11 +1253,12 @@ RefreshTableCacheEntryIfInvalid(ShardIdCacheEntry *shardEntry)
 
 
 /*
- * LookupShardCacheEntry returns the cache entry belonging to a shard, or
+ * LookupShardCacheEntry returns the cache entry belonging to a shard.
- * errors out if that shard is unknown.
+ * It errors out if that shard is unknown and missingOk is false. Else,
+ * it will return a NULL cache entry.
  */
 static ShardIdCacheEntry *
-LookupShardIdCacheEntry(int64 shardId)
+LookupShardIdCacheEntry(int64 shardId, bool missingOk)
 {
 	bool foundInCache = false;
 	bool recheck = false;
@@ -1233,12 +1272,16 @@ LookupShardIdCacheEntry(int64 shardId)
 
 	if (!foundInCache)
 	{
-		InitializeTableCacheEntry(shardId);
+		if (!InitializeTableCacheEntry(shardId, missingOk))
+		{
+			return NULL;
+		}
+
 		recheck = true;
 	}
 	else
 	{
-		recheck = RefreshTableCacheEntryIfInvalid(shardEntry);
+		recheck = RefreshTableCacheEntryIfInvalid(shardEntry, missingOk);
 	}
 
 	/*
@@ -1252,7 +1295,8 @@ LookupShardIdCacheEntry(int64 shardId)
 
 		if (!foundInCache)
 		{
-			ereport(ERROR, (errmsg("could not find valid entry for shard "
+			int eflag = (missingOk) ? DEBUG1 : ERROR;
+			ereport(eflag, (errmsg("could not find valid entry for shard "
 								   UINT64_FORMAT, shardId)));
 		}
 	}
@@ -4277,6 +4321,9 @@ InvalidateCitusTableCacheEntrySlot(CitusTableCacheEntrySlot *cacheSlot)
 	{
 		/* reload the metadata */
 		cacheSlot->citusTableMetadata->isValid = false;
+
+		/* clean up ShardIdCacheHash */
+		RemoveStaleShardIdCacheEntries(cacheSlot->citusTableMetadata);
 	}
 }
 
@@ -4677,37 +4724,6 @@ LookupShardRelationFromCatalog(int64 shardId, bool missingOk)
 }
 
 
-/*
- * ShardExists returns whether the given shard ID exists in pg_dist_shard.
- */
-bool
-ShardExists(int64 shardId)
-{
-	ScanKeyData scanKey[1];
-	int scanKeyCount = 1;
-	Relation pgDistShard = table_open(DistShardRelationId(), AccessShareLock);
-	bool shardExists = false;
-
-	ScanKeyInit(&scanKey[0], Anum_pg_dist_shard_shardid,
-				BTEqualStrategyNumber, F_INT8EQ, Int64GetDatum(shardId));
-
-	SysScanDesc scanDescriptor = systable_beginscan(pgDistShard,
-													DistShardShardidIndexId(), true,
-													NULL, scanKeyCount, scanKey);
-
-	HeapTuple heapTuple = systable_getnext(scanDescriptor);
-	if (HeapTupleIsValid(heapTuple))
-	{
-		shardExists = true;
-	}
-
-	systable_endscan(scanDescriptor);
-	table_close(pgDistShard, NoLock);
-
-	return shardExists;
-}
-
-
 /*
  * GetPartitionTypeInputInfo populates output parameters with the interval type
  * identifier and modifier for the specified partition key/method combination.

src/backend/distributed/metadata/node_metadata.c

@@ -2677,9 +2677,16 @@ DeleteNodeRow(char *nodeName, int32 nodePort)
 
 	/*
 	 * simple_heap_delete() expects that the caller has at least an
-	 * AccessShareLock on replica identity index.
+	 * AccessShareLock on primary key index.
+	 *
+	 * XXX: This does not seem required, do we really need to acquire this lock?
+	 * Postgres doesn't acquire such locks on indexes before deleting catalog tuples.
+	 * Linking here the reasons we added this lock acquirement:
+	 * https://github.com/citusdata/citus/pull/2851#discussion_r306569462
+	 * https://github.com/citusdata/citus/pull/2855#discussion_r313628554
+	 * https://github.com/citusdata/citus/issues/1890
 	 */
-	Relation replicaIndex = index_open(RelationGetReplicaIndex(pgDistNode),
+	Relation replicaIndex = index_open(RelationGetPrimaryKeyIndex(pgDistNode),
 									   AccessShareLock);
 
 	ScanKeyInit(&scanKey[0], Anum_pg_dist_node_nodename,

src/backend/distributed/operations/repair_shards.c

@@ -21,6 +21,7 @@
 #include "catalog/pg_class.h"
 #include "catalog/pg_enum.h"
 #include "distributed/adaptive_executor.h"
+#include "distributed/backend_data.h"
 #include "distributed/citus_ruleutils.h"
 #include "distributed/colocation_utils.h"
 #include "distributed/commands.h"
@@ -397,15 +398,28 @@ citus_move_shard_placement(PG_FUNCTION_ARGS)
 									  targetNodeName, targetNodePort);
 
 
+	/*
+	 * We want to be able to track progress of shard moves using
+	 * get_rebalancer_progress. If this move is initiated by the rebalancer,
+	 * then the rebalancer call has already set up the shared memory that is
+	 * used to do that. But if citus_move_shard_placement is called directly by
+	 * the user (or through any other mechanism), then the shared memory is not
+	 * set up yet. In that case we do it here.
+	 */
+	if (!IsRebalancerInternalBackend())
+	{
 		WorkerNode *sourceNode = FindWorkerNode(sourceNodeName, sourceNodePort);
 		WorkerNode *targetNode = FindWorkerNode(targetNodeName, targetNodePort);
 
-	PlacementUpdateEvent *placementUpdateEvent = palloc0(sizeof(PlacementUpdateEvent));
+		PlacementUpdateEvent *placementUpdateEvent = palloc0(
+			sizeof(PlacementUpdateEvent));
 		placementUpdateEvent->updateType = PLACEMENT_UPDATE_MOVE;
 		placementUpdateEvent->shardId = shardId;
 		placementUpdateEvent->sourceNode = sourceNode;
 		placementUpdateEvent->targetNode = targetNode;
-	SetupRebalanceMonitor(list_make1(placementUpdateEvent), relationId);
+		SetupRebalanceMonitor(list_make1(placementUpdateEvent), relationId,
+							  REBALANCE_PROGRESS_MOVING);
+	}
 
 	/*
 	 * At this point of the shard moves, we don't need to block the writes to

src/backend/distributed/operations/shard_rebalancer.c

@@ -201,6 +201,8 @@ static int PlacementsHashCompare(const void *lhsKey, const void *rhsKey, Size ke
 static uint32 PlacementsHashHashCode(const void *key, Size keySize);
 static bool WorkerNodeListContains(List *workerNodeList, const char *workerName,
 								   uint32 workerPort);
+static void UpdateColocatedShardPlacementProgress(uint64 shardId, char *sourceName,
+												  int sourcePort, uint64 progress);
 static bool IsPlacementOnWorkerNode(ShardPlacement *placement, WorkerNode *workerNode);
 static NodeFillState * FindFillStateForPlacement(RebalanceState *state,
 												 ShardPlacement *placement);
@@ -258,6 +260,7 @@ PG_FUNCTION_INFO_V1(pg_dist_rebalance_strategy_enterprise_check);
 bool RunningUnderIsolationTest = false;
 int MaxRebalancerLoggedIgnoredMoves = 5;
 
+
 #ifdef USE_ASSERT_CHECKING
 
 /*
@@ -763,7 +766,9 @@ ExecutePlacementUpdates(List *placementUpdateList, Oid shardReplicationModeOid,
  * dsm handle so that it can be used for updating the progress and cleaning things up.
  */
 void
-SetupRebalanceMonitor(List *placementUpdateList, Oid relationId)
+SetupRebalanceMonitor(List *placementUpdateList,
+					  Oid relationId,
+					  uint64 initialProgressState)
 {
 	List *colocatedUpdateList = GetColocatedRebalanceSteps(placementUpdateList);
 	ListCell *colocatedUpdateCell = NULL;
@@ -787,7 +792,7 @@ SetupRebalanceMonitor(List *placementUpdateList, Oid relationId)
 		event->shardId = colocatedUpdate->shardId;
 		event->sourcePort = colocatedUpdate->sourceNode->workerPort;
 		event->targetPort = colocatedUpdate->targetNode->workerPort;
-		pg_atomic_init_u64(&event->progress, REBALANCE_PROGRESS_MOVING);
+		pg_atomic_init_u64(&event->progress, initialProgressState);
 
 		eventIndex++;
 	}
@@ -1186,34 +1191,63 @@ BuildShardSizesHash(ProgressMonitorData *monitor, HTAB *shardStatistics)
 		PlacementUpdateEventProgress *step = placementUpdateEvents + eventIndex;
 
 		uint64 shardId = step->shardId;
+		uint64 shardSize = 0;
+		uint64 backupShardSize = 0;
+		uint64 progress = pg_atomic_read_u64(&step->progress);
 
-		uint64 shardSize = WorkerShardSize(shardStatistics, step->sourceName,
+		uint64 sourceSize = WorkerShardSize(shardStatistics, step->sourceName,
 											step->sourcePort, shardId);
+		uint64 targetSize = WorkerShardSize(shardStatistics, step->targetName,
+											step->targetPort, shardId);
+
+		if (progress == REBALANCE_PROGRESS_WAITING ||
+			progress == REBALANCE_PROGRESS_MOVING)
+		{
+			/*
+			 * If we are not done with the move, the correct shard size is the
+			 * size on the source.
+			 */
+			shardSize = sourceSize;
+			backupShardSize = targetSize;
+		}
+		else if (progress == REBALANCE_PROGRESS_MOVED)
+		{
+			/*
+			 * If we are done with the move, the correct shard size is the size
+			 * on the target
+			 */
+			shardSize = targetSize;
+			backupShardSize = sourceSize;
+		}
 
 		if (shardSize == 0)
 		{
-			/*
+			if (backupShardSize == 0)
-			 * It's possible that we are reading the sizes after the move has
-			 * already fininshed. This means that the shards on the source
-			 * might have already been deleted. In that case we instead report
-			 * the size on the target as the shard size, since that is now the
-			 * only existing shard.
-			 */
-			shardSize = WorkerShardSize(shardStatistics, step->targetName,
-										step->targetPort, shardId);
-			if (shardSize == 0)
 			{
 				/*
 				 * We don't have any useful shard size. This can happen when a
 				 * shard is moved multiple times and it is not present on
 				 * either of these nodes. Probably the shard is on a worker
-				 * related to the next move. In the weird case that this shard
+				 * related to another event. In the weird case that this shard
 				 * is on the nodes and actually is size 0, we will have no
 				 * entry in the hashmap. When fetching from it we always
 				 * default to 0 if no entry is found, so that's fine.
 				 */
 				continue;
 			}
+
+			/*
+			 * Because of the way we fetch shard sizes they are from a slightly
+			 * earlier moment than the progress state we just read from shared
+			 * memory. Usually this is no problem, but there exist some race
+			 * conditions where this matters. For example, for very quick moves
+			 * it is possible that even though a step is now reported as MOVED,
+			 * when we read the shard sizes the move had not even started yet.
+			 * This in turn can mean that the target size is 0 while the source
+			 * size is not. We try to handle such rare edge cases by falling
+			 * back on the other shard size if that one is not 0.
+			 */
+			shardSize = backupShardSize;
 		}
 
 
@@ -1427,6 +1461,15 @@ GetMovedShardIdsByWorker(PlacementUpdateEventProgress *steps, int stepCount,
 		AddToWorkerShardIdSet(shardsByWorker, step->sourceName, step->sourcePort,
 							  step->shardId);
 
+		if (pg_atomic_read_u64(&step->progress) == REBALANCE_PROGRESS_WAITING)
+		{
+			/*
+			 * shard move has not started so we don't need target stats for
+			 * this shard
+			 */
+			continue;
+		}
+
 		AddToWorkerShardIdSet(shardsByWorker, step->targetName, step->targetPort,
 							  step->shardId);
 	}
@@ -1559,6 +1602,8 @@ RebalanceTableShards(RebalanceOptions *options, Oid shardReplicationModeOid)
 	 * This uses the first relationId from the list, it's only used for display
 	 * purposes so it does not really matter which to show
 	 */
+	SetupRebalanceMonitor(placementUpdateList, linitial_oid(options->relationIdList),
+						  REBALANCE_PROGRESS_WAITING);
 	ExecutePlacementUpdates(placementUpdateList, shardReplicationModeOid, "Moving");
 	FinalizeCurrentProgressMonitor();
 }
@@ -1635,11 +1680,21 @@ UpdateShardPlacement(PlacementUpdateEvent *placementUpdateEvent,
 						errmsg("only moving or copying shards is supported")));
 	}
 
+	UpdateColocatedShardPlacementProgress(shardId,
+										  sourceNode->workerName,
+										  sourceNode->workerPort,
+										  REBALANCE_PROGRESS_MOVING);
+
 	/*
 	 * In case of failure, we throw an error such that rebalance_table_shards
 	 * fails early.
 	 */
 	ExecuteRebalancerCommandInSeparateTransaction(placementUpdateCommand->data);
+
+	UpdateColocatedShardPlacementProgress(shardId,
+										  sourceNode->workerName,
+										  sourceNode->workerPort,
+										  REBALANCE_PROGRESS_MOVED);
 }
 
 
@@ -2700,6 +2755,51 @@ WorkerNodeListContains(List *workerNodeList, const char *workerName, uint32 work
 }
 
 
+/*
+ * UpdateColocatedShardPlacementProgress updates the progress of the given placement,
+ * along with its colocated placements, to the given state.
+ */
+static void
+UpdateColocatedShardPlacementProgress(uint64 shardId, char *sourceName, int sourcePort,
+									  uint64 progress)
+{
+	ProgressMonitorData *header = GetCurrentProgressMonitor();
+
+	if (header != NULL)
+	{
+		PlacementUpdateEventProgress *steps = ProgressMonitorSteps(header);
+		ListCell *colocatedShardIntervalCell = NULL;
+
+		ShardInterval *shardInterval = LoadShardInterval(shardId);
+		List *colocatedShardIntervalList = ColocatedShardIntervalList(shardInterval);
+
+		for (int moveIndex = 0; moveIndex < header->stepCount; moveIndex++)
+		{
+			PlacementUpdateEventProgress *step = steps + moveIndex;
+			uint64 currentShardId = step->shardId;
+			bool colocatedShard = false;
+
+			foreach(colocatedShardIntervalCell, colocatedShardIntervalList)
+			{
+				ShardInterval *candidateShard = lfirst(colocatedShardIntervalCell);
+				if (candidateShard->shardId == currentShardId)
+				{
+					colocatedShard = true;
+					break;
+				}
+			}
+
+			if (colocatedShard &&
+				strcmp(step->sourceName, sourceName) == 0 &&
+				step->sourcePort == sourcePort)
+			{
+				pg_atomic_write_u64(&step->progress, progress);
+			}
+		}
+	}
+}
+
+
 /*
  * pg_dist_rebalance_strategy_enterprise_check is a now removed function, but
  * to avoid issues during upgrades a C stub is kept.

src/backend/distributed/operations/shard_split.c

@@ -503,6 +503,8 @@ SplitShard(SplitMode splitMode,
 
 	List *workersForPlacementList = GetWorkerNodesFromWorkerIds(nodeIdsForPlacementList);
 
+	ErrorIfNotAllNodesHaveReferenceTableReplicas(workersForPlacementList);
+
 	List *sourceColocatedShardIntervalList = NIL;
 	if (colocatedShardIntervalList == NIL)
 	{
@@ -522,7 +524,6 @@ SplitShard(SplitMode splitMode,
 
 	if (splitMode == BLOCKING_SPLIT)
 	{
-		EnsureReferenceTablesExistOnAllNodesExtended(TRANSFER_MODE_BLOCK_WRITES);
 		BlockingShardSplit(
 			splitOperation,
 			splitWorkflowId,

src/backend/distributed/planner/combine_query_planner.c

@@ -30,7 +30,6 @@ static List * RemoteScanTargetList(List *workerTargetList);
 static PlannedStmt * BuildSelectStatementViaStdPlanner(Query *combineQuery,
 													   List *remoteScanTargetList,
 													   CustomScan *remoteScan);
-static bool FindCitusExtradataContainerRTE(Node *node, RangeTblEntry **result);
 
 static Plan * CitusCustomScanPathPlan(PlannerInfo *root, RelOptInfo *rel,
 									  struct CustomPath *best_path, List *tlist,
@@ -136,6 +135,12 @@ CreateCitusCustomScanPath(PlannerInfo *root, RelOptInfo *relOptInfo,
 	path->custom_path.path.pathtarget = relOptInfo->reltarget;
 	path->custom_path.path.parent = relOptInfo;
 
+#if (PG_VERSION_NUM >= PG_VERSION_15)
+
+	/* necessary to avoid extra Result node in PG15 */
+	path->custom_path.flags = CUSTOMPATH_SUPPORT_PROJECTION;
+#endif
+
 	/*
 	 * The 100k rows we put on the cost of the path is kind of arbitrary and could be
 	 * improved in accuracy to produce better plans.
@@ -317,7 +322,7 @@ BuildSelectStatementViaStdPlanner(Query *combineQuery, List *remoteScanTargetLis
  * Finds the rangetable entry in the query that refers to the citus_extradata_container
  * and stores the pointer in result.
  */
-static bool
+bool
 FindCitusExtradataContainerRTE(Node *node, RangeTblEntry **result)
 {
 	if (node == NULL)

src/backend/distributed/planner/deparse_shard_query.c

@@ -17,6 +17,7 @@
 #include "catalog/pg_constraint.h"
 #include "distributed/citus_nodefuncs.h"
 #include "distributed/citus_ruleutils.h"
+#include "distributed/combine_query_planner.h"
 #include "distributed/deparse_shard_query.h"
 #include "distributed/insert_select_planner.h"
 #include "distributed/listutils.h"
@@ -79,12 +80,13 @@ RebuildQueryStrings(Job *workerJob)
 
 		if (UpdateOrDeleteQuery(query))
 		{
+			List *relationShardList = task->relationShardList;
+
 			/*
 			 * For UPDATE and DELETE queries, we may have subqueries and joins, so
 			 * we use relation shard list to update shard names and call
 			 * pg_get_query_def() directly.
 			 */
-			List *relationShardList = task->relationShardList;
 			UpdateRelationToShardNames((Node *) query, relationShardList);
 		}
 		else if (query->commandType == CMD_INSERT && task->modifyWithSubquery)
@@ -229,7 +231,16 @@ UpdateRelationToShardNames(Node *node, List *relationShardList)
 
 	RangeTblEntry *newRte = (RangeTblEntry *) node;
 
-	if (newRte->rtekind != RTE_RELATION)
+	if (newRte->rtekind == RTE_FUNCTION)
+	{
+		newRte = NULL;
+		if (!FindCitusExtradataContainerRTE(node, &newRte))
+		{
+			/* only update function rtes containing citus_extradata_container */
+			return false;
+		}
+	}
+	else if (newRte->rtekind != RTE_RELATION)
 	{
 		return false;
 	}

src/backend/distributed/planner/distributed_planner.c

@@ -559,9 +559,26 @@ int
 GetRTEIdentity(RangeTblEntry *rte)
 {
 	Assert(rte->rtekind == RTE_RELATION);
-	Assert(rte->values_lists != NIL);
+
+	/*
+	 * Since SQL functions might be in-lined by standard_planner,
+	 * we might miss assigning an RTE identity for RangeTblEntries
+	 * related to SQL functions. We already have checks in other
+	 * places to throw an error for SQL functions but they are not
+	 * sufficient due to function in-lining; so here we capture such
+	 * cases and throw an error here.
+	 */
+	if (list_length(rte->values_lists) != 2)
+	{
+		ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+						errmsg("cannot perform distributed planning on this "
+							   "query because parameterized queries for SQL "
+							   "functions referencing distributed tables are "
+							   "not supported"),
+						errhint("Consider using PL/pgSQL functions instead.")));
+	}
+
 	Assert(IsA(rte->values_lists, IntList));
-	Assert(list_length(rte->values_lists) == 2);
 
 	return linitial_int(rte->values_lists);
 }
@@ -1369,7 +1386,14 @@ FinalizePlan(PlannedStmt *localPlan, DistributedPlan *distributedPlan)
 	Node *distributedPlanData = (Node *) distributedPlan;
 
 	customScan->custom_private = list_make1(distributedPlanData);
+
+#if (PG_VERSION_NUM >= PG_VERSION_15)
+
+	/* necessary to avoid extra Result node in PG15 */
+	customScan->flags = CUSTOMPATH_SUPPORT_BACKWARD_SCAN | CUSTOMPATH_SUPPORT_PROJECTION;
+#else
 	customScan->flags = CUSTOMPATH_SUPPORT_BACKWARD_SCAN;
+#endif
 
 	/*
 	 * Fast path queries cannot have any subplans by definition, so skip

src/backend/distributed/planner/multi_router_planner.c

@@ -2677,9 +2677,6 @@ TargetShardIntervalForFastPathQuery(Query *query, bool *isMultiShardQuery,
 	}
 
 	/* we're only expecting single shard from a single table */
-	Node *distKey PG_USED_FOR_ASSERTS_ONLY = NULL;
-	Assert(FastPathRouterQuery(query, &distKey) || !EnableFastPathRouterPlanner);
-
 	if (list_length(prunedShardIntervalList) > 1)
 	{
 		*isMultiShardQuery = true;

src/backend/distributed/progress/multi_progress.c

@@ -109,11 +109,17 @@ GetCurrentProgressMonitor(void)
 /*
  * FinalizeCurrentProgressMonitor releases the dynamic memory segment of the current
  * progress monitoring data structure and removes the process from
- * pg_stat_get_progress_info() output.
+ * pg_stat_get_progress_info() output. If there's no such dynamic memory
+ * segment this is a no-op.
  */
 void
 FinalizeCurrentProgressMonitor(void)
 {
+	if (currentProgressDSMHandle == DSM_HANDLE_INVALID)
+	{
+		return;
+	}
+
 	dsm_segment *dsmSegment = dsm_find_mapping(currentProgressDSMHandle);
 
 	if (dsmSegment != NULL)

src/backend/distributed/shared_library_init.c

@@ -2125,6 +2125,20 @@ RegisterCitusConfigVariables(void)
 		ShowShardsForAppNamePrefixesAssignHook,
 		NULL);
 
+	DefineCustomBoolVariable(
+		"citus.skip_advisory_lock_permission_checks",
+		gettext_noop("Postgres would normally enforce some "
+					 "ownership checks while acquiring locks. "
+					 "When this setting is 'off', Citus skips"
+					 "ownership checks on internal advisory "
+					 "locks."),
+		NULL,
+		&SkipAdvisoryLockPermissionChecks,
+		false,
+		GUC_SUPERUSER_ONLY,
+		GUC_NO_SHOW_ALL,
+		NULL, NULL, NULL);
+
 	DefineCustomBoolVariable(
 		"citus.skip_jsonb_validation_in_copy",
 		gettext_noop("Skip validation of JSONB columns on the coordinator during COPY "
@@ -2692,10 +2706,17 @@ StatisticsCollectionGucCheckHook(bool *newval, void **extra, GucSource source)
 static void
 CitusAuthHook(Port *port, int status)
 {
-	uint64 gpid = ExtractGlobalPID(port->application_name);
+	/*
+	 * We determine the backend type here because other calls in this hook rely
+	 * on it, both IsExternalClientBackend and InitializeBackendData. These
+	 * calls would normally initialize its value based on the application_name
+	 * global, but this global is not set yet at this point in the connection
+	 * initialization. So here we determine it based on the value from Port.
+	 */
+	DetermineCitusBackendType(port->application_name);
 
 	/* external connections to not have a GPID immediately */
-	if (gpid == INVALID_CITUS_INTERNAL_BACKEND_GPID)
+	if (IsExternalClientBackend())
 	{
 		/*
 		 * We raise the shared connection counter pre-emptively. As a result, we may
@@ -2747,7 +2768,8 @@ CitusAuthHook(Port *port, int status)
 	 * replication connection. A replication connection backend will never call
 	 * StartupCitusBackend, which normally sets up the global PID.
 	 */
-	InitializeBackendData(gpid);
+	InitializeBackendData(port->application_name);
+
 
 	/* let other authentication hooks to kick in first */
 	if (original_client_auth_hook)

src/backend/distributed/transaction/backend_data.c

@@ -105,9 +105,6 @@ static BackendData *MyBackendData = NULL;
 static CitusBackendType CurrentBackendType = CITUS_BACKEND_NOT_ASSIGNED;
 
 
-static void DetermineCitusBackendType(void);
-
-
 PG_FUNCTION_INFO_V1(assign_distributed_transaction_id);
 PG_FUNCTION_INFO_V1(get_current_transaction_id);
 PG_FUNCTION_INFO_V1(get_global_active_transactions);
@@ -681,7 +678,7 @@ TotalProcCount(void)
  * initialized this backend can be correctly shown in citus_lock_waits.
  */
 void
-InitializeBackendData(uint64 globalPID)
+InitializeBackendData(const char *applicationName)
 {
 	if (MyBackendData != NULL)
 	{
@@ -693,6 +690,8 @@ InitializeBackendData(uint64 globalPID)
 		return;
 	}
 
+	uint64 gpid = ExtractGlobalPID(applicationName);
+
 	MyBackendData = &backendManagementShmemData->backends[MyProc->pgprocno];
 
 	Assert(MyBackendData);
@@ -704,20 +703,8 @@ InitializeBackendData(uint64 globalPID)
 	UnSetGlobalPID();
 
 	SpinLockAcquire(&MyBackendData->mutex);
-
+	MyBackendData->distributedCommandOriginator = IsExternalClientBackend();
-	/*
+	MyBackendData->globalPID = gpid;
-	 * Use the given globalPID to initialize
-	 */
-	if (globalPID == INVALID_CITUS_INTERNAL_BACKEND_GPID)
-	{
-		MyBackendData->distributedCommandOriginator =
-			true;
-	}
-	else
-	{
-		MyBackendData->globalPID = globalPID;
-		MyBackendData->distributedCommandOriginator = false;
-	}
 	SpinLockRelease(&MyBackendData->mutex);
 
 	/*
@@ -1045,7 +1032,7 @@ citus_pid_for_gpid(PG_FUNCTION_ARGS)
  * if the application name is not compatible with Citus' application names returns 0.
  */
 uint64
-ExtractGlobalPID(char *applicationName)
+ExtractGlobalPID(const char *applicationName)
 {
 	/* does application name exist */
 	if (!applicationName)
@@ -1064,16 +1051,16 @@ ExtractGlobalPID(char *applicationName)
 		return INVALID_CITUS_INTERNAL_BACKEND_GPID;
 	}
 
-	/* are the remaining characters of the application name numbers */
-	uint64 numberOfRemainingChars = strlen(applicationNameCopy) - prefixLength;
-	if (numberOfRemainingChars <= 0 ||
-		!strisdigit_s(applicationNameCopy + prefixLength, numberOfRemainingChars))
-	{
-		return INVALID_CITUS_INTERNAL_BACKEND_GPID;
-	}
-
 	char *globalPIDString = &applicationNameCopy[prefixLength];
 	uint64 globalPID = strtoul(globalPIDString, NULL, 10);
+	if (globalPID == 0)
+	{
+		/*
+		 * INVALID_CITUS_INTERNAL_BACKEND_GPID is 0, but just to be explicit
+		 * about how we handle strtoul errors.
+		 */
+		return INVALID_CITUS_INTERNAL_BACKEND_GPID;
+	}
 
 	return globalPID;
 }
@@ -1371,7 +1358,7 @@ IsRebalancerInternalBackend(void)
 {
 	if (CurrentBackendType == CITUS_BACKEND_NOT_ASSIGNED)
 	{
-		DetermineCitusBackendType();
+		DetermineCitusBackendType(application_name);
 	}
 
 	return CurrentBackendType == CITUS_REBALANCER_BACKEND;
@@ -1387,7 +1374,7 @@ IsCitusInternalBackend(void)
 {
 	if (CurrentBackendType == CITUS_BACKEND_NOT_ASSIGNED)
 	{
-		DetermineCitusBackendType();
+		DetermineCitusBackendType(application_name);
 	}
 
 	return CurrentBackendType == CITUS_INTERNAL_BACKEND;
@@ -1403,29 +1390,41 @@ IsCitusRunCommandBackend(void)
 {
 	if (CurrentBackendType == CITUS_BACKEND_NOT_ASSIGNED)
 	{
-		DetermineCitusBackendType();
+		DetermineCitusBackendType(application_name);
 	}
 
 	return CurrentBackendType == CITUS_RUN_COMMAND_BACKEND;
 }
 
 
+bool
+IsExternalClientBackend(void)
+{
+	if (CurrentBackendType == CITUS_BACKEND_NOT_ASSIGNED)
+	{
+		DetermineCitusBackendType(application_name);
+	}
+
+	return CurrentBackendType == EXTERNAL_CLIENT_BACKEND;
+}
+
+
 /*
  * DetermineCitusBackendType determines the type of backend based on the application_name.
  */
-static void
+void
-DetermineCitusBackendType(void)
+DetermineCitusBackendType(const char *applicationName)
 {
-	if (ExtractGlobalPID(application_name) != INVALID_CITUS_INTERNAL_BACKEND_GPID)
+	if (ExtractGlobalPID(applicationName) != INVALID_CITUS_INTERNAL_BACKEND_GPID)
 	{
 		CurrentBackendType = CITUS_INTERNAL_BACKEND;
 	}
-	else if (application_name && strcmp(application_name, CITUS_REBALANCER_NAME) == 0)
+	else if (applicationName && strcmp(applicationName, CITUS_REBALANCER_NAME) == 0)
 	{
 		CurrentBackendType = CITUS_REBALANCER_BACKEND;
 	}
-	else if (application_name &&
+	else if (applicationName &&
-			 strcmp(application_name, CITUS_RUN_COMMAND_APPLICATION_NAME) == 0)
+			 strcmp(applicationName, CITUS_RUN_COMMAND_APPLICATION_NAME) == 0)
 	{
 		CurrentBackendType = CITUS_RUN_COMMAND_BACKEND;
 	}

src/backend/distributed/utils/colocation_utils.c

@@ -1303,10 +1303,17 @@ DeleteColocationGroupLocally(uint32 colocationId)
 	{
 		/*
 		 * simple_heap_delete() expects that the caller has at least an
-		 * AccessShareLock on replica identity index.
+		 * AccessShareLock on primary key index.
+		 *
+		 * XXX: This does not seem required, do we really need to acquire this lock?
+		 * Postgres doesn't acquire such locks on indexes before deleting catalog tuples.
+		 * Linking here the reasons we added this lock acquirement:
+		 * https://github.com/citusdata/citus/pull/2851#discussion_r306569462
+		 * https://github.com/citusdata/citus/pull/2855#discussion_r313628554
+		 * https://github.com/citusdata/citus/issues/1890
 		 */
 		Relation replicaIndex =
-			index_open(RelationGetReplicaIndex(pgDistColocation),
+			index_open(RelationGetPrimaryKeyIndex(pgDistColocation),
 					   AccessShareLock);
 		simple_heap_delete(pgDistColocation, &(heapTuple->t_self));
 

src/backend/distributed/utils/reference_table_utils.c

@@ -50,6 +50,7 @@ static void ReplicateReferenceTableShardToNode(ShardInterval *shardInterval,
 											   int nodePort);
 static bool AnyRelationsModifiedInTransaction(List *relationIdList);
 static List * ReplicatedMetadataSyncedDistributedTableList(void);
+static bool NodeHasAllReferenceTableReplicas(WorkerNode *workerNode);
 
 /* exports for SQL callable functions */
 PG_FUNCTION_INFO_V1(upgrade_to_reference_table);
@@ -688,3 +689,81 @@ ReplicateAllReferenceTablesToNode(WorkerNode *workerNode)
 		}
 	}
 }
+
+
+/*
+ * ErrorIfNotAllNodesHaveReferenceTableReplicas throws an error when one of the
+ * nodes in the list does not have reference table replicas.
+ */
+void
+ErrorIfNotAllNodesHaveReferenceTableReplicas(List *workerNodeList)
+{
+	WorkerNode *workerNode = NULL;
+
+	foreach_ptr(workerNode, workerNodeList)
+	{
+		if (!NodeHasAllReferenceTableReplicas(workerNode))
+		{
+			ereport(ERROR, (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
+							errmsg("reference tables have not been replicated to "
+								   "node %s:%d yet",
+								   workerNode->workerName,
+								   workerNode->workerPort),
+							errdetail("Reference tables are lazily replicated after "
+									  "adding a node, but must exist before shards can "
+									  "be created on that node."),
+							errhint("Run SELECT replicate_reference_tables(); to "
+									"ensure reference tables exist on all nodes.")));
+		}
+	}
+}
+
+
+/*
+ * NodeHasAllReferenceTablesReplicas returns whether the given worker node has reference
+ * table replicas. If there are no reference tables the function returns true.
+ *
+ * This function does not do any locking, so the situation could change immediately after,
+ * though we can only ever transition from false to true, so only "false" could be the
+ * incorrect answer.
+ *
+ * In the case where the function returns true because no reference tables exist
+ * on the node, a reference table could be created immediately after. However, the
+ * creation logic guarantees that this reference table will be created on all the
+ * nodes, so our answer was correct.
+ */
+static bool
+NodeHasAllReferenceTableReplicas(WorkerNode *workerNode)
+{
+	List *referenceTableIdList = CitusTableTypeIdList(REFERENCE_TABLE);
+
+	if (list_length(referenceTableIdList) == 0)
+	{
+		/* no reference tables exist */
+		return true;
+	}
+
+	Oid referenceTableId = linitial_oid(referenceTableIdList);
+	List *shardIntervalList = LoadShardIntervalList(referenceTableId);
+	if (list_length(shardIntervalList) != 1)
+	{
+		/* check for corrupt metadata */
+		ereport(ERROR, (errmsg("reference table \"%s\" can only have 1 shard",
+							   get_rel_name(referenceTableId))));
+	}
+
+	ShardInterval *shardInterval = (ShardInterval *) linitial(shardIntervalList);
+	List *shardPlacementList = ActiveShardPlacementList(shardInterval->shardId);
+
+	ShardPlacement *placement = NULL;
+	foreach_ptr(placement, shardPlacementList)
+	{
+		if (placement->groupId == workerNode->groupId)
+		{
+			/* our worker has a reference table placement */
+			return true;
+		}
+	}
+
+	return false;
+}

src/backend/distributed/utils/resource_lock.c

@@ -109,6 +109,8 @@ PG_FUNCTION_INFO_V1(lock_relation_if_exists);
 
 /* Config variable managed via guc.c */
 bool EnableAcquiringUnsafeLockFromWorkers = false;
+bool SkipAdvisoryLockPermissionChecks = false;
+
 
 /*
  * lock_shard_metadata allows the shard distribution metadata to be locked
@@ -248,7 +250,10 @@ lock_shard_resources(PG_FUNCTION_ARGS)
 			continue;
 		}
 
+		if (!SkipAdvisoryLockPermissionChecks)
+		{
 			EnsureTablePermissions(relationId, aclMask);
+		}
 
 		LockShardResource(shardId, lockMode);
 	}

src/backend/distributed/utils/shard_utils.c

@@ -16,7 +16,10 @@
 #include "utils/fmgrprotos.h"
 #include "utils/lsyscache.h"
 #include "distributed/coordinator_protocol.h"
+#include "distributed/listutils.h"
+#include "distributed/log_utils.h"
 #include "distributed/metadata_utility.h"
+#include "distributed/multi_physical_planner.h"
 #include "distributed/relay_utility.h"
 #include "distributed/shard_utils.h"
 

src/include/distributed/backend_data.h

@@ -50,7 +50,7 @@ extern void BackendManagementShmemInit(void);
 extern size_t BackendManagementShmemSize(void);
 extern void InitializeBackendManagement(void);
 extern int TotalProcCount(void);
-extern void InitializeBackendData(uint64 globalPID);
+extern void InitializeBackendData(const char *applicationName);
 extern void LockBackendSharedMemory(LWLockMode lockMode);
 extern void UnlockBackendSharedMemory(void);
 extern void UnSetDistributedTransactionId(void);
@@ -62,7 +62,7 @@ extern void SetBackendDataGlobalPID(uint64 globalPID);
 extern uint64 GetGlobalPID(void);
 extern void SetBackendDataDistributedCommandOriginator(bool
 													   distributedCommandOriginator);
-extern uint64 ExtractGlobalPID(char *applicationName);
+extern uint64 ExtractGlobalPID(const char *applicationName);
 extern int ExtractNodeIdFromGlobalPID(uint64 globalPID, bool missingOk);
 extern int ExtractProcessIdFromGlobalPID(uint64 globalPID);
 extern void GetBackendDataForProc(PGPROC *proc, BackendData *result);
@@ -74,9 +74,11 @@ extern LocalTransactionId GetMyProcLocalTransactionId(void);
 extern int GetExternalClientBackendCount(void);
 extern uint32 IncrementExternalClientBackendCounter(void);
 extern void DecrementExternalClientBackendCounter(void);
+extern void DetermineCitusBackendType(const char *applicationName);
 extern bool IsCitusInternalBackend(void);
 extern bool IsRebalancerInternalBackend(void);
 extern bool IsCitusRunCommandBackend(void);
+extern bool IsExternalClientBackend(void);
 extern void ResetCitusBackendType(void);
 
 #define INVALID_CITUS_INTERNAL_BACKEND_GPID 0

src/include/distributed/combine_query_planner.h

@@ -27,6 +27,7 @@ extern Path * CreateCitusCustomScanPath(PlannerInfo *root, RelOptInfo *relOptInf
 										CustomScan *remoteScan);
 extern PlannedStmt * PlanCombineQuery(struct DistributedPlan *distributedPlan,
 									  struct CustomScan *dataScan);
+extern bool FindCitusExtradataContainerRTE(Node *node, RangeTblEntry **result);
 extern bool ReplaceCitusExtraDataContainer;
 extern CustomScan *ReplaceCitusExtraDataContainerWithCustomScan;
 

src/include/distributed/commands.h

@@ -667,6 +667,8 @@ extern List * CreateTriggerStmtObjectAddress(Node *node, bool missingOk, bool
 											 isPostprocess);
 extern void CreateTriggerEventExtendNames(CreateTrigStmt *createTriggerStmt,
 										  char *schemaName, uint64 shardId);
+extern List * PreprocessAlterTriggerRenameStmt(Node *node, const char *queryString,
+											   ProcessUtilityContext processUtilityContext);
 extern List * PostprocessAlterTriggerRenameStmt(Node *node, const char *queryString);
 extern void AlterTriggerRenameEventExtendNames(RenameStmt *renameTriggerStmt,
 											   char *schemaName, uint64 shardId);

src/include/distributed/metadata_cache.h

@@ -157,6 +157,7 @@ extern uint32 ColocationIdViaCatalog(Oid relationId);
 extern bool IsCitusLocalTableByDistParams(char partitionMethod, char replicationModel);
 extern List * CitusTableList(void);
 extern ShardInterval * LoadShardInterval(uint64 shardId);
+extern bool ShardExists(uint64 shardId);
 extern Oid RelationIdForShard(uint64 shardId);
 extern bool ReferenceTableShardId(uint64 shardId);
 extern bool DistributedTableShardId(uint64 shardId);
@@ -174,7 +175,6 @@ extern int32 GetLocalNodeId(void);
 extern void CitusTableCacheFlushInvalidatedEntries(void);
 extern Oid LookupShardRelationFromCatalog(int64 shardId, bool missing_ok);
 extern List * ShardPlacementListIncludingOrphanedPlacements(uint64 shardId);
-extern bool ShardExists(int64 shardId);
 extern void CitusInvalidateRelcacheByRelid(Oid relationId);
 extern void CitusInvalidateRelcacheByShardId(int64 shardId);
 extern void InvalidateForeignKeyGraph(void);

src/include/distributed/reference_table_utils.h

@@ -26,5 +26,6 @@ extern void DeleteAllReplicatedTablePlacementsFromNodeGroup(int32 groupId,
 															bool localOnly);
 extern int CompareOids(const void *leftElement, const void *rightElement);
 extern void ReplicateAllReferenceTablesToNode(WorkerNode *workerNode);
+extern void ErrorIfNotAllNodesHaveReferenceTableReplicas(List *workerNodeList);
 
 #endif /* REFERENCE_TABLE_UTILS_H_ */

src/include/distributed/resource_lock.h

@@ -150,6 +150,7 @@ enum DistLockConfigs
 	DIST_LOCK_NOWAIT = 2
 };
 
+
 /* Lock shard/relation metadata for safe modifications */
 extern void LockShardDistributionMetadata(int64 shardId, LOCKMODE lockMode);
 extern void LockPlacementCleanup(void);
@@ -195,5 +196,6 @@ extern void AcquireDistributedLockOnRelations(List *relationList, LOCKMODE lockM
 extern void PreprocessLockStatement(LockStmt *stmt, ProcessUtilityContext context);
 
 extern bool EnableAcquiringUnsafeLockFromWorkers;
+extern bool SkipAdvisoryLockPermissionChecks;
 
 #endif /* RESOURCE_LOCK_H */

src/include/distributed/shard_rebalancer.h

@@ -73,7 +73,9 @@
 /* *INDENT-ON* */
 
 #define REBALANCE_ACTIVITY_MAGIC_NUMBER 1337
+#define REBALANCE_PROGRESS_WAITING 0
 #define REBALANCE_PROGRESS_MOVING 1
+#define REBALANCE_PROGRESS_MOVED 2
 
 /* Enumeration that defines different placement update types */
 typedef enum
@@ -193,7 +195,9 @@ extern List * ReplicationPlacementUpdates(List *workerNodeList, List *shardPlace
 extern void ExecuteRebalancerCommandInSeparateTransaction(char *command);
 extern void AcquirePlacementColocationLock(Oid relationId, int lockMode,
 										   const char *operationName);
-extern void SetupRebalanceMonitor(List *placementUpdateList, Oid relationId);
 
+extern void SetupRebalanceMonitor(List *placementUpdateList,
+								  Oid relationId,
+								  uint64 initialProgressState);
 
 #endif   /* SHARD_REBALANCER_H */

src/test/regress/after_pg_upgrade_schedule

@@ -1,4 +1,4 @@
-test: upgrade_basic_after upgrade_type_after upgrade_ref2ref_after upgrade_distributed_function_after upgrade_rebalance_strategy_after upgrade_list_citus_objects upgrade_autoconverted_after upgrade_citus_stat_activity upgrade_citus_locks
+test: upgrade_basic_after upgrade_type_after upgrade_ref2ref_after upgrade_distributed_function_after upgrade_rebalance_strategy_after upgrade_list_citus_objects upgrade_autoconverted_after upgrade_citus_stat_activity upgrade_citus_locks upgrade_distributed_triggers_after
 
 # This attempts dropping citus extension (and rollbacks), so please do
 # not run in parallel with any other tests.

src/test/regress/before_pg_upgrade_schedule

@@ -8,6 +8,7 @@ test: upgrade_distributed_function_before upgrade_rebalance_strategy_before
 test: upgrade_autoconverted_before
 test: upgrade_citus_stat_activity
 test: upgrade_citus_locks
+test: upgrade_distributed_triggers_before
 
 # upgrade_columnar_before renames public schema to citus_schema, so let's
 # run this test as the last one.

src/test/regress/expected/adaptive_executor.out

@@ -78,5 +78,36 @@ $$);
 (1 row)
 
 END;
+CREATE OR REPLACE FUNCTION select_for_update()
+RETURNS void
+AS $$
+DECLARE
+    my int;
+BEGIN
+    SELECT y INTO my FROM test WHERE x = 1 FOR UPDATE;
+END;
+$$ LANGUAGE plpgsql;
+-- so that we can prove that we open a transaction block by logging below:
+-- "NOTICE:  issuing BEGIN TRANSACTION ISOLATION LEVEL READ COMMITTED;..."
+SET citus.log_remote_commands TO on;
+SELECT select_for_update();
+NOTICE:  issuing BEGIN TRANSACTION ISOLATION LEVEL READ COMMITTED;SELECT assign_distributed_transaction_id(xx, xx, 'xxxxxxx');
+DETAIL:  on server postgres@localhost:xxxxx connectionId: xxxxxxx
+CONTEXT:  SQL statement "SELECT y         FROM test WHERE x = 1 FOR UPDATE"
+PL/pgSQL function select_for_update() line XX at SQL statement
+NOTICE:  issuing SELECT y FROM adaptive_executor.test_801009000 test WHERE (x OPERATOR(pg_catalog.=) 1) FOR UPDATE OF test
+DETAIL:  on server postgres@localhost:xxxxx connectionId: xxxxxxx
+CONTEXT:  SQL statement "SELECT y         FROM test WHERE x = 1 FOR UPDATE"
+PL/pgSQL function select_for_update() line XX at SQL statement
+NOTICE:  issuing COMMIT
+DETAIL:  on server postgres@localhost:xxxxx connectionId: xxxxxxx
+ select_for_update
+---------------------------------------------------------------------
+
+(1 row)
+
+SET citus.log_remote_commands TO off;
 DROP SCHEMA adaptive_executor CASCADE;
-NOTICE:  drop cascades to table test
+NOTICE:  drop cascades to 2 other objects
+DETAIL:  drop cascades to table test
+drop cascades to function select_for_update()

src/test/regress/expected/adv_lock_permission.out

@@ -0,0 +1,41 @@
+CREATE SCHEMA adv_lock_permission;
+SET search_path to adv_lock_permission;
+-- do not cache any connections, we change some settings and don't want old ones cached
+SET citus.max_cached_conns_per_worker TO 0;
+CREATE ROLE user_1 WITH LOGIN;
+CREATE TABLE reference_table_1 (A int);
+SELECT create_reference_table('reference_table_1');
+ create_reference_table
+---------------------------------------------------------------------
+
+(1 row)
+
+CREATE TABLE reference_table_2 (A int);
+SELECT create_reference_table('reference_table_2');
+ create_reference_table
+---------------------------------------------------------------------
+
+(1 row)
+
+GRANT USAGE ON SCHEMA adv_lock_permission TO user_1;
+GRANT SELECT ON reference_table_1 TO user_1;
+GRANT INSERT, UPDATE ON reference_table_2 TO user_1;
+SET ROLE user_1;
+-- do not cache any connections, we change some settings and don't want old ones cached
+SET citus.max_cached_conns_per_worker TO 0;
+SET search_path to adv_lock_permission;
+INSERT INTO reference_table_2 SELECT * FROM reference_table_1;
+ERROR:  permission denied for table reference_table_1
+CONTEXT:  while executing command on localhost:xxxxx
+SET ROLE postgres;
+-- do not cache any connections, we change some settings and don't want old ones cached
+SET citus.max_cached_conns_per_worker TO 0;
+-- change the role so that it can skip permission checks
+ALTER ROLE user_1 SET citus.skip_advisory_lock_permission_checks TO on;
+SET ROLE user_1;
+SET citus.max_cached_conns_per_worker TO 0;
+INSERT INTO reference_table_2 SELECT * FROM reference_table_1;
+SET ROLE postgres;
+SET client_min_messages TO ERROR;
+DROP SCHEMA adv_lock_permission CASCADE;
+DROP ROLE user_1;

src/test/regress/expected/citus_local_tables_mx.out

@@ -887,22 +887,39 @@ ALTER TABLE loc_tb ADD CONSTRAINT fkey FOREIGN KEY (a) references ref_tb(a);
 ERROR:  Citus can not handle circular dependencies between distributed objects
 -- drop the view&matview with circular dependency
 DROP VIEW v103 CASCADE;
-SET client_min_messages TO DEBUG1;
 -- now it should successfully add to metadata and create the views on workers
 ALTER TABLE loc_tb ADD CONSTRAINT fkey FOREIGN KEY (a) references ref_tb(a);
-DEBUG:  executing "CREATE OR REPLACE VIEW citus_local_tables_mx.v100 (a) AS  SELECT loc_tb.a
+-- verify the views are created on workers
-   FROM citus_local_tables_mx.loc_tb; ALTER VIEW citus_local_tables_mx.v100 OWNER TO postgres"
+select run_command_on_workers($$SELECT count(*)=0 from citus_local_tables_mx.v100$$);
-DEBUG:  "view v100" has dependency to "table loc_tb" that is not in Citus' metadata
+ run_command_on_workers
-DEBUG:  executing "CREATE OR REPLACE VIEW citus_local_tables_mx.v101 (a) AS  SELECT loc_tb.a
+---------------------------------------------------------------------
-   FROM (citus_local_tables_mx.loc_tb
+ (localhost,57637,t,t)
-     JOIN citus_local_tables_mx.ref_tb USING (a)); ALTER VIEW citus_local_tables_mx.v101 OWNER TO postgres"
+ (localhost,57638,t,t)
-DEBUG:  "view v101" has dependency to "table loc_tb" that is not in Citus' metadata
+(2 rows)
-DEBUG:  executing "CREATE MATERIALIZED VIEW citus_local_tables_mx.matview_101 USING heap AS  SELECT loc_tb.a
+
-   FROM citus_local_tables_mx.loc_tb;ALTER MATERIALIZED VIEW citus_local_tables_mx.matview_101 OWNER TO postgres"
+select run_command_on_workers($$SELECT count(*)=0 from citus_local_tables_mx.v101$$);
-DEBUG:  executing "CREATE OR REPLACE VIEW citus_local_tables_mx.v102 (a) AS  SELECT v101.a
+ run_command_on_workers
-   FROM citus_local_tables_mx.v101; ALTER VIEW citus_local_tables_mx.v102 OWNER TO postgres"
+---------------------------------------------------------------------
-DEBUG:  "view v102" has dependency to "table loc_tb" that is not in Citus' metadata
+ (localhost,57637,t,t)
-DEBUG:  validating foreign key constraint "fkey_xxxxxxx"
+ (localhost,57638,t,t)
+(2 rows)
+
+select run_command_on_workers($$SELECT count(*)=0 from citus_local_tables_mx.v102$$);
+ run_command_on_workers
+---------------------------------------------------------------------
+ (localhost,57637,t,t)
+ (localhost,57638,t,t)
+(2 rows)
+
+CREATE TABLE loc_tb_2 (a int);
+CREATE VIEW v104 AS SELECT * from loc_tb_2;
+SET client_min_messages TO DEBUG1;
+-- verify the CREATE command for the view is generated correctly
+ALTER TABLE loc_tb_2 ADD CONSTRAINT fkey_2 FOREIGN KEY (a) references ref_tb(a);
+DEBUG:  executing "CREATE OR REPLACE VIEW citus_local_tables_mx.v104 (a) AS  SELECT loc_tb_2.a
+   FROM citus_local_tables_mx.loc_tb_2; ALTER VIEW citus_local_tables_mx.v104 OWNER TO postgres"
+DEBUG:  "view v104" has dependency to "table loc_tb_2" that is not in Citus' metadata
+DEBUG:  validating foreign key constraint "fkey_2_1330083"
 SET client_min_messages TO WARNING;
 -- works fine
 select run_command_on_workers($$SELECT count(*) from citus_local_tables_mx.v100, citus_local_tables_mx.v101, citus_local_tables_mx.v102$$);
@@ -922,14 +939,14 @@ select run_command_on_workers($$SELECT count(*) from citus_local_tables_mx.v100$
  (localhost,57638,f,"ERROR:  relation ""citus_local_tables_mx.v100"" does not exist")
 (2 rows)
 
-	select run_command_on_workers($$SELECT count(*) from citus_local_tables_mx.v101$$);
+select run_command_on_workers($$SELECT count(*) from citus_local_tables_mx.v101$$);
                                 run_command_on_workers
 ---------------------------------------------------------------------
  (localhost,57637,f,"ERROR:  relation ""citus_local_tables_mx.v101"" does not exist")
  (localhost,57638,f,"ERROR:  relation ""citus_local_tables_mx.v101"" does not exist")
 (2 rows)
 
-	select run_command_on_workers($$SELECT count(*) from citus_local_tables_mx.v102$$);
+select run_command_on_workers($$SELECT count(*) from citus_local_tables_mx.v102$$);
                                 run_command_on_workers
 ---------------------------------------------------------------------
  (localhost,57637,f,"ERROR:  relation ""citus_local_tables_mx.v102"" does not exist")

src/test/regress/expected/columnar_chunk_filtering.out

@@ -264,21 +264,17 @@ EXPLAIN (analyze on, costs off, timing off, summary off)
          Columnar Projected Columns: a
 (9 rows)
 
-SELECT plan_without_arrows($Q$
 EXPLAIN (costs off, timing off, summary off)
   SELECT y, * FROM another_columnar_table;
-$Q$);
+                      QUERY PLAN
-                      plan_without_arrows
 ---------------------------------------------------------------------
  Custom Scan (ColumnarScan) on another_columnar_table
    Columnar Projected Columns: x, y
 (2 rows)
 
-SELECT plan_without_arrows($Q$
 EXPLAIN (costs off, timing off, summary off)
   SELECT *, x FROM another_columnar_table;
-$Q$);
+                      QUERY PLAN
-                      plan_without_arrows
 ---------------------------------------------------------------------
  Custom Scan (ColumnarScan) on another_columnar_table
    Columnar Projected Columns: x, y

src/test/regress/expected/columnar_citus_integration.out

@@ -958,15 +958,13 @@ SELECT * FROM weird_col_explain;
 (7 rows)
 
 \set VERBOSITY terse
-SELECT public.plan_without_result_lines($Q$
 EXPLAIN (COSTS OFF, SUMMARY OFF)
 SELECT *, "bbbbbbbbbbbbbbbbbbbbbbbbb\!bbbb'bbbbbbbbbbbbbbbbbbbbb''bbbbbbbb"
 FROM weird_col_explain
 WHERE "bbbbbbbbbbbbbbbbbbbbbbbbb\!bbbb'bbbbbbbbbbbbbbbbbbbbb''bbbbbbbb" * 2 >
       "aaaaaaaaaaaa$aaaaaa$$aaaaaaaaaaaaaaaaaaaaaaaaaaaaa'aaaaaaaa'$a'!";
-$Q$);
 NOTICE:  identifier "aaaaaaaaaaaa$aaaaaa$$aaaaaaaaaaaaaaaaaaaaaaaaaaaaa'aaaaaaaa'$a'!" will be truncated to "aaaaaaaaaaaa$aaaaaa$$aaaaaaaaaaaaaaaaaaaaaaaaaaaaa'aaaaaaaa'$a'"
-                                                                              plan_without_result_lines
+                                                                                   QUERY PLAN
 ---------------------------------------------------------------------
  Custom Scan (Citus Adaptive)
    Task Count: 4

src/test/regress/expected/insert_select_repartition.out

@@ -1261,10 +1261,8 @@ NOTICE:  copying the data has completed
 
 (1 row)
 
-SELECT public.plan_without_result_lines($Q$
 explain (costs off) insert into table_with_sequences select y, x from table_with_sequences;
-$Q$);
+                                   QUERY PLAN
-                               plan_without_result_lines
 ---------------------------------------------------------------------
  Custom Scan (Citus INSERT ... SELECT)
    INSERT/SELECT method: pull to coordinator
@@ -1289,10 +1287,8 @@ NOTICE:  copying the data has completed
 
 (1 row)
 
-SELECT public.plan_without_result_lines($Q$
 explain (costs off) insert into table_with_user_sequences select y, x from table_with_user_sequences;
-$Q$);
+                                        QUERY PLAN
-                                    plan_without_result_lines
 ---------------------------------------------------------------------
  Custom Scan (Citus INSERT ... SELECT)
    INSERT/SELECT method: pull to coordinator

src/test/regress/expected/insert_select_repartition_0.out

@@ -1261,10 +1261,8 @@ NOTICE:  copying the data has completed
 
 (1 row)
 
-SELECT public.plan_without_result_lines($Q$
 explain (costs off) insert into table_with_sequences select y, x from table_with_sequences;
-$Q$);
+                                   QUERY PLAN
-                               plan_without_result_lines
 ---------------------------------------------------------------------
  Custom Scan (Citus INSERT ... SELECT)
    INSERT/SELECT method: pull to coordinator
@@ -1289,10 +1287,8 @@ NOTICE:  copying the data has completed
 
 (1 row)
 
-SELECT public.plan_without_result_lines($Q$
 explain (costs off) insert into table_with_user_sequences select y, x from table_with_user_sequences;
-$Q$);
+                                        QUERY PLAN
-                                    plan_without_result_lines
 ---------------------------------------------------------------------
  Custom Scan (Citus INSERT ... SELECT)
    INSERT/SELECT method: pull to coordinator

src/test/regress/expected/isolation_blocking_shard_split.out

@@ -56,7 +56,6 @@ step s2-commit:
 	COMMIT;
 
 step s1-update: <... completed>
-ERROR:  could not find valid entry for shard xxxxx
 step s1-commit:
 	COMMIT;
 
@@ -80,7 +79,7 @@ nodeport|shardid|success|result
 
        id|value
 ---------------------------------------------------------------------
-123456789|    1
+123456789|  111
 (1 row)
 
 
@@ -140,7 +139,6 @@ step s2-commit:
 	COMMIT;
 
 step s1-delete: <... completed>
-ERROR:  could not find valid entry for shard xxxxx
 step s1-commit:
 	COMMIT;
 
@@ -158,14 +156,13 @@ step s2-print-cluster:
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
    57637|1500001|t      |     0
-   57637|1500003|t      |     1
+   57637|1500003|t      |     0
    57638|1500004|t      |     0
 (3 rows)
 
-       id|value
+id|value
 ---------------------------------------------------------------------
-123456789|    1
+(0 rows)
-(1 row)
 
 
 starting permutation: s1-load-cache s1-begin s1-select s2-begin s2-blocking-shard-split s1-insert s2-commit s1-commit s2-print-cluster
@@ -221,7 +218,6 @@ get_shard_id_for_distribution_column
                              1500002
 (1 row)
 
-ERROR:  could not find valid entry for shard xxxxx
 step s1-commit:
 	COMMIT;
 
@@ -239,13 +235,14 @@ step s2-print-cluster:
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
    57637|1500001|t      |     0
-   57637|1500003|t      |     0
+   57637|1500003|t      |     1
    57638|1500004|t      |     0
 (3 rows)
 
-id|value
+       id|value
 ---------------------------------------------------------------------
-(0 rows)
+123456789|    1
+(1 row)
 
 
 starting permutation: s1-load-cache s1-begin s1-select s2-begin s2-blocking-shard-split s1-copy s2-commit s1-commit s2-print-cluster
@@ -373,7 +370,6 @@ step s2-commit:
 	COMMIT;
 
 step s1-update: <... completed>
-ERROR:  could not find valid entry for shard xxxxx
 step s1-commit:
 	COMMIT;
 
@@ -397,7 +393,7 @@ nodeport|shardid|success|result
 
        id|value
 ---------------------------------------------------------------------
-123456789|    1
+123456789|    111
 (1 row)
 
 
@@ -453,7 +449,6 @@ step s2-commit:
 	COMMIT;
 
 step s1-delete: <... completed>
-ERROR:  could not find valid entry for shard xxxxx
 step s1-commit:
 	COMMIT;
 
@@ -471,14 +466,13 @@ step s2-print-cluster:
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
    57637|1500001|t      |     0
-   57637|1500003|t      |     1
+   57637|1500003|t      |     0
    57638|1500004|t      |     0
 (3 rows)
 
-       id|value
+id|value
 ---------------------------------------------------------------------
-123456789|    1
+(0 rows)
-(1 row)
 
 
 starting permutation: s1-begin s1-select s2-begin s2-blocking-shard-split s1-insert s2-commit s1-commit s2-print-cluster
@@ -530,7 +524,6 @@ get_shard_id_for_distribution_column
                              1500002
 (1 row)
 
-ERROR:  could not find valid entry for shard xxxxx
 step s1-commit:
 	COMMIT;
 
@@ -548,13 +541,14 @@ step s2-print-cluster:
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
    57637|1500001|t      |     0
-   57637|1500003|t      |     0
+   57637|1500003|t      |     1
    57638|1500004|t      |     0
 (3 rows)
 
-id|value
+       id|value
 ---------------------------------------------------------------------
-(0 rows)
+123456789|    1
+(1 row)
 
 
 starting permutation: s1-begin s1-select s2-begin s2-blocking-shard-split s1-copy s2-commit s1-commit s2-print-cluster

src/test/regress/expected/isolation_citus_dist_activity.out

@@ -116,7 +116,7 @@ step s3-view-worker:
 
 query                                                                     |citus_nodename_for_nodeid|citus_nodeport_for_nodeid|state              |wait_event_type|wait_event|usename |datname
 ---------------------------------------------------------------------
-INSERT INTO public.test_table_1300008 (column1, column2) VALUES (100, 100)|localhost                |                    57636|idle in transaction|Client         |ClientRead|postgres|regression
+INSERT INTO public.test_table_1300003 (column1, column2) VALUES (100, 100)|localhost                |                    57636|idle in transaction|Client         |ClientRead|postgres|regression
 (1 row)
 
 step s2-rollback:
@@ -180,10 +180,10 @@ step s3-view-worker:
 
 query                                                                        |citus_nodename_for_nodeid|citus_nodeport_for_nodeid|state              |wait_event_type|wait_event|usename |datname
 ---------------------------------------------------------------------
-SELECT count(*) AS count FROM public.test_table_1300014 test_table WHERE true|localhost                |                    57636|idle in transaction|Client         |ClientRead|postgres|regression
+SELECT count(*) AS count FROM public.test_table_1300004 test_table WHERE true|localhost                |                    57636|idle in transaction|Client         |ClientRead|postgres|regression
-SELECT count(*) AS count FROM public.test_table_1300013 test_table WHERE true|localhost                |                    57636|idle in transaction|Client         |ClientRead|postgres|regression
+SELECT count(*) AS count FROM public.test_table_1300003 test_table WHERE true|localhost                |                    57636|idle in transaction|Client         |ClientRead|postgres|regression
-SELECT count(*) AS count FROM public.test_table_1300012 test_table WHERE true|localhost                |                    57636|idle in transaction|Client         |ClientRead|postgres|regression
+SELECT count(*) AS count FROM public.test_table_1300002 test_table WHERE true|localhost                |                    57636|idle in transaction|Client         |ClientRead|postgres|regression
-SELECT count(*) AS count FROM public.test_table_1300011 test_table WHERE true|localhost                |                    57636|idle in transaction|Client         |ClientRead|postgres|regression
+SELECT count(*) AS count FROM public.test_table_1300001 test_table WHERE true|localhost                |                    57636|idle in transaction|Client         |ClientRead|postgres|regression
 (4 rows)
 
 step s2-rollback:
@@ -247,7 +247,7 @@ step s3-view-worker:
 
 query                                                                                                       |citus_nodename_for_nodeid|citus_nodeport_for_nodeid|state              |wait_event_type|wait_event|usename |datname
 ---------------------------------------------------------------------
-SELECT count(*) AS count FROM public.test_table_1300017 test_table WHERE (column1 OPERATOR(pg_catalog.=) 55)|localhost                |                    57636|idle in transaction|Client         |ClientRead|postgres|regression
+SELECT count(*) AS count FROM public.test_table_1300002 test_table WHERE (column1 OPERATOR(pg_catalog.=) 55)|localhost                |                    57636|idle in transaction|Client         |ClientRead|postgres|regression
 (1 row)
 
 step s2-rollback:

src/test/regress/expected/isolation_non_blocking_shard_split.out

@@ -434,7 +434,6 @@ step s1-end:
  COMMIT;
 
 step s4-insert: <... completed>
-ERROR:  could not find valid entry for shard xxxxx
 step s4-end:
    COMMIT;
 
@@ -452,13 +451,14 @@ step s2-print-cluster:
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
    57638|1500002|t      |     0
-   57638|1500003|t      |     1
+   57638|1500003|t      |     2
 (2 rows)
 
        id|value
 ---------------------------------------------------------------------
+      900|    1
 123456789|    1
-(1 row)
+(2 rows)
 
 
 starting permutation: s2-print-cluster s3-acquire-advisory-lock s1-begin s2-begin s1-non-blocking-shard-split s2-insert s2-end s2-print-cluster s3-release-advisory-lock s1-end s2-print-cluster

src/test/regress/expected/isolation_shard_rebalancer_progress.out

@@ -35,7 +35,9 @@ table_name|shardid|shard_size|sourcename|sourceport|source_shard_size|targetname
 ---------------------------------------------------------------------
 colocated1|1500001|     49152|localhost |     57637|            49152|localhost |     57638|                0|       1
 colocated2|1500005|    376832|localhost |     57637|           376832|localhost |     57638|                0|       1
-(2 rows)
+colocated1|1500002|    196608|localhost |     57637|           196608|localhost |     57638|                0|       0
+colocated2|1500006|      8192|localhost |     57637|             8192|localhost |     57638|                0|       0
+(4 rows)
 
 step s2-unlock-1-start:
  ROLLBACK;
@@ -112,9 +114,11 @@ step s7-get-progress:
 
 table_name|shardid|shard_size|sourcename|sourceport|source_shard_size|targetname|targetport|target_shard_size|progress
 ---------------------------------------------------------------------
+colocated1|1500001|     73728|localhost |     57637|                0|localhost |     57638|            73728|       2
+colocated2|1500005|    401408|localhost |     57637|                0|localhost |     57638|           401408|       2
 colocated1|1500002|    196608|localhost |     57637|           196608|localhost |     57638|                0|       1
 colocated2|1500006|      8192|localhost |     57637|             8192|localhost |     57638|                0|       1
-(2 rows)
+(4 rows)
 
 step s3-unlock-2-start:
  ROLLBACK;
@@ -205,7 +209,9 @@ table_name|shardid|shard_size|sourcename|sourceport|source_shard_size|targetname
 ---------------------------------------------------------------------
 colocated1|1500001|     49152|localhost |     57637|            49152|localhost |     57638|            73728|       1
 colocated2|1500005|    376832|localhost |     57637|           376832|localhost |     57638|           401408|       1
-(2 rows)
+colocated1|1500002|    196608|localhost |     57637|           196608|localhost |     57638|                0|       0
+colocated2|1500006|      8192|localhost |     57637|             8192|localhost |     57638|                0|       0
+(4 rows)
 
 step s7-release-lock:
  COMMIT;
@@ -288,7 +294,9 @@ table_name|shardid|shard_size|sourcename|sourceport|source_shard_size|targetname
 ---------------------------------------------------------------------
 colocated1|1500001|     49152|localhost |     57637|            49152|localhost |     57638|             8192|       1
 colocated2|1500005|    376832|localhost |     57637|           376832|localhost |     57638|             8192|       1
-(2 rows)
+colocated1|1500002|    196608|localhost |     57637|           196608|localhost |     57638|                0|       0
+colocated2|1500006|      8192|localhost |     57637|             8192|localhost |     57638|                0|       0
+(4 rows)
 
 step s6-release-advisory-lock:
     SELECT pg_advisory_unlock(44000, 55152);

src/test/regress/expected/isolation_tenant_isolation.out

@@ -44,7 +44,6 @@ step s2-commit:
  COMMIT;
 
 step s1-update: <... completed>
-ERROR:  could not find valid entry for shard xxxxx
 step s1-commit:
  COMMIT;
 
@@ -69,7 +68,7 @@ nodeport|shardid|success|result
 
 id|value
 ---------------------------------------------------------------------
- 5|   10
+ 5|    5
 (1 row)
 
 
@@ -117,7 +116,6 @@ step s2-commit:
  COMMIT;
 
 step s1-delete: <... completed>
-ERROR:  could not find valid entry for shard xxxxx
 step s1-commit:
  COMMIT;
 
@@ -135,11 +133,85 @@ step s2-print-cluster:
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
    57637|1500009|t      |     0
-   57637|1500010|t      |     1
+   57637|1500010|t      |     0
    57637|1500011|t      |     0
    57638|1500008|t      |     0
 (4 rows)
 
+id|value
+---------------------------------------------------------------------
+(0 rows)
+
+
+starting permutation: s1-load-cache s1-insert s1-begin s1-select s2-begin s2-isolate-tenant s1-update-complex s2-commit s1-commit s2-print-cluster
+create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+step s1-load-cache:
+ TRUNCATE isolation_table;
+
+step s1-insert:
+ INSERT INTO isolation_table VALUES (5, 10);
+
+step s1-begin:
+    BEGIN;
+    -- the tests are written with the logic where single shard SELECTs
+    -- do not to open transaction blocks
+    SET citus.select_opens_transaction_block TO false;
+
+step s1-select:
+ SELECT count(*) FROM isolation_table WHERE id = 5;
+
+count
+---------------------------------------------------------------------
+    1
+(1 row)
+
+step s2-begin:
+ BEGIN;
+
+step s2-isolate-tenant:
+ SELECT isolate_tenant_to_new_shard('isolation_table', 5, shard_transfer_mode => 'block_writes');
+
+isolate_tenant_to_new_shard
+---------------------------------------------------------------------
+                    1500016
+(1 row)
+
+step s1-update-complex:
+ UPDATE isolation_table SET value = 5 WHERE id IN (
+        SELECT max(id) FROM isolation_table
+    );
+ <waiting ...>
+step s2-commit: 
+ COMMIT;
+
+step s1-update-complex: <... completed>
+ERROR:  shard for the given value does not exist
+step s1-commit:
+ COMMIT;
+
+step s2-print-cluster:
+ -- row count per shard
+ SELECT
+  nodeport, shardid, success, result
+ FROM
+  run_command_on_placements('isolation_table', 'select count(*) from %s')
+ ORDER BY
+  nodeport, shardid;
+ -- rows
+ SELECT id, value FROM isolation_table ORDER BY id, value;
+
+nodeport|shardid|success|result
+---------------------------------------------------------------------
+   57637|1500015|t      |     0
+   57637|1500016|t      |     1
+   57637|1500017|t      |     0
+   57638|1500014|t      |     0
+(4 rows)
+
 id|value
 ---------------------------------------------------------------------
  5|   10
@@ -177,7 +249,7 @@ step s2-isolate-tenant:
 
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500016
+                    1500022
 (1 row)
 
 step s1-insert:
@@ -187,7 +259,6 @@ step s2-commit:
  COMMIT;
 
 step s1-insert: <... completed>
-ERROR:  could not find valid entry for shard xxxxx
 step s1-commit:
  COMMIT;
 
@@ -204,15 +275,16 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500015|t      |     0
+   57637|1500021|t      |     0
-   57637|1500016|t      |     0
+   57637|1500022|t      |     1
-   57637|1500017|t      |     0
+   57637|1500023|t      |     0
-   57638|1500014|t      |     0
+   57638|1500020|t      |     0
 (4 rows)
 
 id|value
 ---------------------------------------------------------------------
-(0 rows)
+ 5|   10
+(1 row)
 
 
 starting permutation: s1-load-cache s1-begin s1-select s2-begin s2-isolate-tenant s1-copy s2-commit s1-commit s2-print-cluster
@@ -246,7 +318,7 @@ step s2-isolate-tenant:
 
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500022
+                    1500028
 (1 row)
 
 step s1-copy:
@@ -273,10 +345,10 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500021|t      |     0
+   57637|1500027|t      |     0
-   57637|1500022|t      |     0
+   57637|1500028|t      |     0
-   57637|1500023|t      |     0
+   57637|1500029|t      |     0
-   57638|1500020|t      |     0
+   57638|1500026|t      |     0
 (4 rows)
 
 id|value
@@ -315,7 +387,7 @@ step s2-isolate-tenant:
 
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500028
+                    1500034
 (1 row)
 
 step s1-ddl:
@@ -341,10 +413,10 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500027|t      |     0
+   57637|1500033|t      |     0
-   57637|1500028|t      |     0
+   57637|1500034|t      |     0
-   57637|1500029|t      |     0
+   57637|1500035|t      |     0
-   57638|1500026|t      |     0
+   57638|1500032|t      |     0
 (4 rows)
 
 id|value
@@ -399,7 +471,7 @@ step s2-isolate-tenant:
 
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500034
+                    1500040
 (1 row)
 
 step s1-update:
@@ -409,7 +481,6 @@ step s2-commit:
  COMMIT;
 
 step s1-update: <... completed>
-ERROR:  could not find valid entry for shard xxxxx
 step s1-commit:
  COMMIT;
 
@@ -426,15 +497,15 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500033|t      |     0
+   57637|1500039|t      |     0
-   57637|1500034|t      |     1
+   57637|1500040|t      |     1
-   57637|1500035|t      |     0
+   57637|1500041|t      |     0
-   57638|1500032|t      |     0
+   57638|1500038|t      |     0
 (4 rows)
 
 id|value
 ---------------------------------------------------------------------
- 5|   10
+ 5|    5
 (1 row)
 
 
@@ -469,7 +540,7 @@ step s2-isolate-tenant:
 
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500040
+                    1500046
 (1 row)
 
 step s1-delete:
@@ -479,7 +550,6 @@ step s2-commit:
  COMMIT;
 
 step s1-delete: <... completed>
-ERROR:  could not find valid entry for shard xxxxx
 step s1-commit:
  COMMIT;
 
@@ -496,10 +566,81 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500039|t      |     0
+   57637|1500045|t      |     0
-   57637|1500040|t      |     1
+   57637|1500046|t      |     0
-   57637|1500041|t      |     0
+   57637|1500047|t      |     0
-   57638|1500038|t      |     0
+   57638|1500044|t      |     0
+(4 rows)
+
+id|value
+---------------------------------------------------------------------
+(0 rows)
+
+
+starting permutation: s1-insert s1-begin s1-select s2-begin s2-isolate-tenant s1-update-complex s2-commit s1-commit s2-print-cluster
+create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+step s1-insert:
+ INSERT INTO isolation_table VALUES (5, 10);
+
+step s1-begin:
+    BEGIN;
+    -- the tests are written with the logic where single shard SELECTs
+    -- do not to open transaction blocks
+    SET citus.select_opens_transaction_block TO false;
+
+step s1-select:
+ SELECT count(*) FROM isolation_table WHERE id = 5;
+
+count
+---------------------------------------------------------------------
+    1
+(1 row)
+
+step s2-begin:
+ BEGIN;
+
+step s2-isolate-tenant:
+ SELECT isolate_tenant_to_new_shard('isolation_table', 5, shard_transfer_mode => 'block_writes');
+
+isolate_tenant_to_new_shard
+---------------------------------------------------------------------
+                    1500052
+(1 row)
+
+step s1-update-complex:
+ UPDATE isolation_table SET value = 5 WHERE id IN (
+        SELECT max(id) FROM isolation_table
+    );
+ <waiting ...>
+step s2-commit: 
+ COMMIT;
+
+step s1-update-complex: <... completed>
+ERROR:  shard for the given value does not exist
+step s1-commit:
+ COMMIT;
+
+step s2-print-cluster:
+ -- row count per shard
+ SELECT
+  nodeport, shardid, success, result
+ FROM
+  run_command_on_placements('isolation_table', 'select count(*) from %s')
+ ORDER BY
+  nodeport, shardid;
+ -- rows
+ SELECT id, value FROM isolation_table ORDER BY id, value;
+
+nodeport|shardid|success|result
+---------------------------------------------------------------------
+   57637|1500051|t      |     0
+   57637|1500052|t      |     1
+   57637|1500053|t      |     0
+   57638|1500050|t      |     0
 (4 rows)
 
 id|value
@@ -536,7 +677,7 @@ step s2-isolate-tenant:
 
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500046
+                    1500058
 (1 row)
 
 step s1-insert:
@@ -546,7 +687,6 @@ step s2-commit:
  COMMIT;
 
 step s1-insert: <... completed>
-ERROR:  could not find valid entry for shard xxxxx
 step s1-commit:
  COMMIT;
 
@@ -563,15 +703,16 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500045|t      |     0
+   57637|1500057|t      |     0
-   57637|1500046|t      |     0
+   57637|1500058|t      |     1
-   57637|1500047|t      |     0
+   57637|1500059|t      |     0
-   57638|1500044|t      |     0
+   57638|1500056|t      |     0
 (4 rows)
 
 id|value
 ---------------------------------------------------------------------
-(0 rows)
+ 5|   10
+(1 row)
 
 
 starting permutation: s1-begin s1-select s2-begin s2-isolate-tenant s1-copy s2-commit s1-commit s2-print-cluster
@@ -602,7 +743,7 @@ step s2-isolate-tenant:
 
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500052
+                    1500064
 (1 row)
 
 step s1-copy:
@@ -629,10 +770,10 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500051|t      |     0
+   57637|1500063|t      |     0
-   57637|1500052|t      |     0
+   57637|1500064|t      |     0
-   57637|1500053|t      |     0
+   57637|1500065|t      |     0
-   57638|1500050|t      |     0
+   57638|1500062|t      |     0
 (4 rows)
 
 id|value
@@ -668,7 +809,7 @@ step s2-isolate-tenant:
 
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500058
+                    1500070
 (1 row)
 
 step s1-ddl:
@@ -694,10 +835,10 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500057|t      |     0
+   57637|1500069|t      |     0
-   57637|1500058|t      |     0
+   57637|1500070|t      |     0
-   57637|1500059|t      |     0
+   57637|1500071|t      |     0
-   57638|1500056|t      |     0
+   57638|1500068|t      |     0
 (4 rows)
 
 id|value
@@ -744,7 +885,7 @@ step s1-isolate-tenant:
 
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500064
+                    1500076
 (1 row)
 
 step s2-isolate-tenant:
@@ -767,10 +908,10 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500061|t      |     1
+   57637|1500073|t      |     1
-   57638|1500063|t      |     0
+   57638|1500075|t      |     0
-   57638|1500064|t      |     0
+   57638|1500076|t      |     0
-   57638|1500065|t      |     0
+   57638|1500077|t      |     0
 (4 rows)
 
 id|value
@@ -799,7 +940,7 @@ step s1-isolate-tenant:
 
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500070
+                    1500082
 (1 row)
 
 step s2-isolate-tenant:
@@ -822,10 +963,10 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500067|t      |     1
+   57637|1500079|t      |     1
-   57638|1500069|t      |     0
+   57638|1500081|t      |     0
-   57638|1500070|t      |     0
+   57638|1500082|t      |     0
-   57638|1500071|t      |     0
+   57638|1500083|t      |     0
 (4 rows)
 
 id|value

src/test/regress/expected/isolation_tenant_isolation_nonblocking.out

@@ -59,7 +59,7 @@ t
 step s2-isolate-tenant: <... completed>
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500078
+                    1500090
 (1 row)
 
 step s2-commit:
@@ -78,10 +78,10 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500077|t      |     0
+   57637|1500089|t      |     0
-   57637|1500078|t      |     1
+   57637|1500090|t      |     1
-   57637|1500079|t      |     0
+   57637|1500091|t      |     0
-   57638|1500074|t      |     0
+   57638|1500086|t      |     0
 (4 rows)
 
 id|value
@@ -149,7 +149,7 @@ t
 step s2-isolate-tenant: <... completed>
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500086
+                    1500098
 (1 row)
 
 step s2-commit:
@@ -168,10 +168,10 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500085|t      |     0
+   57637|1500097|t      |     0
-   57637|1500086|t      |     0
+   57637|1500098|t      |     0
-   57637|1500087|t      |     0
+   57637|1500099|t      |     0
-   57638|1500082|t      |     0
+   57638|1500094|t      |     0
 (4 rows)
 
 id|value
@@ -179,6 +179,98 @@ id|value
 (0 rows)
 
 
+starting permutation: s1-load-cache s1-insert s3-acquire-advisory-lock s1-begin s1-select s2-begin s2-isolate-tenant s1-update-complex s1-commit s3-release-advisory-lock s2-commit s2-print-cluster
+create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+step s1-load-cache:
+ TRUNCATE isolation_table;
+ TRUNCATE isolation_table2;
+
+step s1-insert:
+ INSERT INTO isolation_table VALUES (5, 10);
+ INSERT INTO isolation_table2 VALUES (5, 10);
+
+step s3-acquire-advisory-lock:
+    SELECT pg_advisory_lock(44000, 55152);
+
+pg_advisory_lock
+---------------------------------------------------------------------
+
+(1 row)
+
+step s1-begin:
+    BEGIN;
+    -- the tests are written with the logic where single shard SELECTs
+    -- do not to open transaction blocks
+    SET citus.select_opens_transaction_block TO false;
+
+step s1-select:
+ SELECT count(*) FROM isolation_table WHERE id = 5;
+
+count
+---------------------------------------------------------------------
+    1
+(1 row)
+
+step s2-begin:
+ BEGIN;
+
+step s2-isolate-tenant:
+ SELECT isolate_tenant_to_new_shard('isolation_table', 5, shard_transfer_mode => 'force_logical');
+ <waiting ...>
+step s1-update-complex: 
+ UPDATE isolation_table SET value = 5 WHERE id IN (
+        SELECT max(id) FROM isolation_table
+    );
+
+step s1-commit:
+ COMMIT;
+
+step s3-release-advisory-lock:
+    SELECT pg_advisory_unlock(44000, 55152);
+
+pg_advisory_unlock
+---------------------------------------------------------------------
+t
+(1 row)
+
+step s2-isolate-tenant: <... completed>
+isolate_tenant_to_new_shard
+---------------------------------------------------------------------
+                    1500106
+(1 row)
+
+step s2-commit:
+ COMMIT;
+
+step s2-print-cluster:
+ -- row count per shard
+ SELECT
+  nodeport, shardid, success, result
+ FROM
+  run_command_on_placements('isolation_table', 'select count(*) from %s')
+ ORDER BY
+  nodeport, shardid;
+ -- rows
+ SELECT id, value FROM isolation_table ORDER BY id, value;
+
+nodeport|shardid|success|result
+---------------------------------------------------------------------
+   57637|1500105|t      |     0
+   57637|1500106|t      |     1
+   57637|1500107|t      |     0
+   57638|1500102|t      |     0
+(4 rows)
+
+id|value
+---------------------------------------------------------------------
+ 5|    5
+(1 row)
+
+
 starting permutation: s1-load-cache s3-acquire-advisory-lock s1-begin s1-select s2-begin s2-isolate-tenant s1-insert s1-commit s3-release-advisory-lock s2-commit s2-print-cluster
 create_distributed_table
 ---------------------------------------------------------------------
@@ -235,7 +327,7 @@ t
 step s2-isolate-tenant: <... completed>
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500094
+                    1500114
 (1 row)
 
 step s2-commit:
@@ -254,10 +346,10 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500093|t      |     0
+   57637|1500113|t      |     0
-   57637|1500094|t      |     1
+   57637|1500114|t      |     1
-   57637|1500095|t      |     0
+   57637|1500115|t      |     0
-   57638|1500090|t      |     0
+   57638|1500110|t      |     0
 (4 rows)
 
 id|value
@@ -321,7 +413,7 @@ t
 step s2-isolate-tenant: <... completed>
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500102
+                    1500122
 (1 row)
 
 step s2-commit:
@@ -340,10 +432,10 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500101|t      |     1
+   57637|1500121|t      |     1
-   57637|1500102|t      |     1
+   57637|1500122|t      |     1
-   57637|1500103|t      |     2
+   57637|1500123|t      |     2
-   57638|1500098|t      |     1
+   57638|1500118|t      |     1
 (4 rows)
 
 id|value
@@ -411,7 +503,7 @@ t
 step s2-isolate-tenant: <... completed>
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500110
+                    1500130
 (1 row)
 
 step s2-commit:
@@ -430,10 +522,10 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500109|t      |     0
+   57637|1500129|t      |     0
-   57637|1500110|t      |     1
+   57637|1500130|t      |     1
-   57637|1500111|t      |     0
+   57637|1500131|t      |     0
-   57638|1500106|t      |     0
+   57638|1500126|t      |     0
 (4 rows)
 
 id|value
@@ -497,7 +589,7 @@ t
 step s2-isolate-tenant: <... completed>
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500118
+                    1500138
 (1 row)
 
 step s2-commit:
@@ -516,10 +608,10 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500117|t      |     0
+   57637|1500137|t      |     0
-   57637|1500118|t      |     0
+   57637|1500138|t      |     0
-   57637|1500119|t      |     0
+   57637|1500139|t      |     0
-   57638|1500114|t      |     0
+   57638|1500134|t      |     0
 (4 rows)
 
 id|value
@@ -527,6 +619,94 @@ id|value
 (0 rows)
 
 
+starting permutation: s1-insert s3-acquire-advisory-lock s1-begin s1-select s2-begin s2-isolate-tenant s1-update-complex s1-commit s3-release-advisory-lock s2-commit s2-print-cluster
+create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+step s1-insert:
+ INSERT INTO isolation_table VALUES (5, 10);
+ INSERT INTO isolation_table2 VALUES (5, 10);
+
+step s3-acquire-advisory-lock:
+    SELECT pg_advisory_lock(44000, 55152);
+
+pg_advisory_lock
+---------------------------------------------------------------------
+
+(1 row)
+
+step s1-begin:
+    BEGIN;
+    -- the tests are written with the logic where single shard SELECTs
+    -- do not to open transaction blocks
+    SET citus.select_opens_transaction_block TO false;
+
+step s1-select:
+ SELECT count(*) FROM isolation_table WHERE id = 5;
+
+count
+---------------------------------------------------------------------
+    1
+(1 row)
+
+step s2-begin:
+ BEGIN;
+
+step s2-isolate-tenant:
+ SELECT isolate_tenant_to_new_shard('isolation_table', 5, shard_transfer_mode => 'force_logical');
+ <waiting ...>
+step s1-update-complex: 
+ UPDATE isolation_table SET value = 5 WHERE id IN (
+        SELECT max(id) FROM isolation_table
+    );
+
+step s1-commit:
+ COMMIT;
+
+step s3-release-advisory-lock:
+    SELECT pg_advisory_unlock(44000, 55152);
+
+pg_advisory_unlock
+---------------------------------------------------------------------
+t
+(1 row)
+
+step s2-isolate-tenant: <... completed>
+isolate_tenant_to_new_shard
+---------------------------------------------------------------------
+                    1500146
+(1 row)
+
+step s2-commit:
+ COMMIT;
+
+step s2-print-cluster:
+ -- row count per shard
+ SELECT
+  nodeport, shardid, success, result
+ FROM
+  run_command_on_placements('isolation_table', 'select count(*) from %s')
+ ORDER BY
+  nodeport, shardid;
+ -- rows
+ SELECT id, value FROM isolation_table ORDER BY id, value;
+
+nodeport|shardid|success|result
+---------------------------------------------------------------------
+   57637|1500145|t      |     0
+   57637|1500146|t      |     1
+   57637|1500147|t      |     0
+   57638|1500142|t      |     0
+(4 rows)
+
+id|value
+---------------------------------------------------------------------
+ 5|    5
+(1 row)
+
+
 starting permutation: s3-acquire-advisory-lock s1-begin s1-select s2-begin s2-isolate-tenant s1-insert s1-commit s3-release-advisory-lock s2-commit s2-print-cluster
 create_distributed_table
 ---------------------------------------------------------------------
@@ -579,7 +759,7 @@ t
 step s2-isolate-tenant: <... completed>
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500126
+                    1500154
 (1 row)
 
 step s2-commit:
@@ -598,10 +778,10 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500125|t      |     0
+   57637|1500153|t      |     0
-   57637|1500126|t      |     1
+   57637|1500154|t      |     1
-   57637|1500127|t      |     0
+   57637|1500155|t      |     0
-   57638|1500122|t      |     0
+   57638|1500150|t      |     0
 (4 rows)
 
 id|value
@@ -661,7 +841,7 @@ t
 step s2-isolate-tenant: <... completed>
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500134
+                    1500162
 (1 row)
 
 step s2-commit:
@@ -680,10 +860,10 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500133|t      |     1
+   57637|1500161|t      |     1
-   57637|1500134|t      |     1
+   57637|1500162|t      |     1
-   57637|1500135|t      |     2
+   57637|1500163|t      |     2
-   57638|1500130|t      |     1
+   57638|1500158|t      |     1
 (4 rows)
 
 id|value
@@ -736,7 +916,7 @@ t
 step s2-isolate-tenant: <... completed>
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500142
+                    1500170
 (1 row)
 
 step s2-print-cluster:
@@ -752,10 +932,10 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500141|t      |     0
+   57637|1500169|t      |     0
-   57637|1500142|t      |     1
+   57637|1500170|t      |     1
-   57637|1500143|t      |     0
+   57637|1500171|t      |     0
-   57638|1500138|t      |     0
+   57638|1500166|t      |     0
 (4 rows)
 
 id|value
@@ -804,7 +984,7 @@ t
 step s2-isolate-tenant: <... completed>
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500150
+                    1500178
 (1 row)
 
 step s2-print-cluster:
@@ -820,10 +1000,10 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500149|t      |     0
+   57637|1500177|t      |     0
-   57637|1500150|t      |     1
+   57637|1500178|t      |     1
-   57637|1500151|t      |     0
+   57637|1500179|t      |     0
-   57638|1500146|t      |     0
+   57638|1500174|t      |     0
 (4 rows)
 
 id|value
@@ -872,7 +1052,7 @@ t
 step s2-isolate-tenant: <... completed>
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500158
+                    1500186
 (1 row)
 
 step s2-print-cluster:
@@ -888,10 +1068,10 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500157|t      |     0
+   57637|1500185|t      |     0
-   57637|1500158|t      |     1
+   57637|1500186|t      |     1
-   57637|1500159|t      |     0
+   57637|1500187|t      |     0
-   57638|1500154|t      |     0
+   57638|1500182|t      |     0
 (4 rows)
 
 id|value
@@ -943,7 +1123,7 @@ t
 step s2-isolate-tenant: <... completed>
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500169
+                    1500197
 (1 row)
 
 step s2-commit:
@@ -962,10 +1142,10 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500168|t      |     0
+   57637|1500196|t      |     0
-   57637|1500169|t      |     1
+   57637|1500197|t      |     1
-   57637|1500170|t      |     0
+   57637|1500198|t      |     0
-   57638|1500165|t      |     0
+   57638|1500193|t      |     0
 (4 rows)
 
 id|value
@@ -1004,7 +1184,7 @@ step s1-isolate-tenant-no-same-coloc-blocking:
 
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500183
+                    1500211
 (1 row)
 
 step s3-release-advisory-lock:
@@ -1018,7 +1198,7 @@ t
 step s2-isolate-tenant: <... completed>
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500180
+                    1500208
 (1 row)
 
 step s2-print-cluster:
@@ -1034,10 +1214,10 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500179|t      |     0
+   57637|1500207|t      |     0
-   57637|1500180|t      |     1
+   57637|1500208|t      |     1
-   57637|1500181|t      |     0
+   57637|1500209|t      |     0
-   57638|1500176|t      |     0
+   57638|1500204|t      |     0
 (4 rows)
 
 id|value
@@ -1076,7 +1256,7 @@ step s1-isolate-tenant-no-same-coloc-blocking:
 
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500194
+                    1500222
 (1 row)
 
 step s3-release-advisory-lock:
@@ -1090,7 +1270,7 @@ t
 step s2-isolate-tenant: <... completed>
 isolate_tenant_to_new_shard
 ---------------------------------------------------------------------
-                    1500191
+                    1500219
 (1 row)
 
 step s2-print-cluster:
@@ -1106,10 +1286,10 @@ step s2-print-cluster:
 
 nodeport|shardid|success|result
 ---------------------------------------------------------------------
-   57637|1500190|t      |     0
+   57637|1500218|t      |     0
-   57637|1500191|t      |     1
+   57637|1500219|t      |     1
-   57637|1500192|t      |     0
+   57637|1500220|t      |     0
-   57638|1500187|t      |     0
+   57638|1500215|t      |     0
 (4 rows)
 
 id|value

src/test/regress/expected/metadata_sync_helpers.out

@@ -108,6 +108,22 @@ BEGIN TRANSACTION ISOLATION LEVEL READ COMMITTED;
 	SET application_name to 'citus_internal gpid=not a correct gpid';
 	SELECT citus_internal_add_partition_metadata ('test_2'::regclass, 'h', 'col_1', 0, 's');
 ERROR:  This is an internal Citus function can only be used in a distributed transaction
+ROLLBACK;
+-- application_name with suffix is ok (e.g. pgbouncer might add this)
+BEGIN TRANSACTION ISOLATION LEVEL READ COMMITTED;
+	SELECT assign_distributed_transaction_id(0, 8, '2021-07-09 15:41:55.542377+02');
+ assign_distributed_transaction_id
+---------------------------------------------------------------------
+
+(1 row)
+
+	SET application_name to 'citus_internal gpid=10000000001 - from 10.12.14.16:10370';
+	SELECT citus_internal_add_partition_metadata ('test_2'::regclass, 'h', 'col_1', 0, 's');
+ citus_internal_add_partition_metadata
+---------------------------------------------------------------------
+
+(1 row)
+
 ROLLBACK;
 -- application_name with empty gpid
 BEGIN TRANSACTION ISOLATION LEVEL READ COMMITTED;

src/test/regress/expected/multi_replicate_reference_table.out

@@ -1150,6 +1150,38 @@ CREATE TABLE test (x int, y int references ref(a));
 SELECT create_distributed_table('test','x');
 ERROR:  canceling the transaction since it was involved in a distributed deadlock
 END;
+-- verify the split fails if we still need to replicate reference tables
+SELECT citus_remove_node('localhost', :worker_2_port);
+ citus_remove_node
+---------------------------------------------------------------------
+
+(1 row)
+
+SELECT create_distributed_table('test','x');
+ create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+SELECT citus_add_node('localhost', :worker_2_port);
+ citus_add_node
+---------------------------------------------------------------------
+        1370022
+(1 row)
+
+SELECT
+  citus_split_shard_by_split_points(shardid,
+                                    ARRAY[(shardminvalue::int + (shardmaxvalue::int - shardminvalue::int)/2)::text],
+                                    ARRAY[nodeid, nodeid],
+                                    'force_logical')
+FROM
+  pg_dist_shard, pg_dist_node
+WHERE
+  logicalrelid = 'replicate_reference_table.test'::regclass AND nodename = 'localhost' AND nodeport = :worker_2_port
+ORDER BY shardid LIMIT 1;
+ERROR:  reference tables have not been replicated to node localhost:xxxxx yet
+DETAIL:  Reference tables are lazily replicated after adding a node, but must exist before shards can be created on that node.
+HINT:  Run SELECT replicate_reference_tables(); to ensure reference tables exist on all nodes.
 -- test adding an invalid node while we have reference tables to replicate
 -- set client message level to ERROR and verbosity to terse to supporess
 -- OS-dependent host name resolution warnings

src/test/regress/expected/multi_select_distinct.out

@@ -3,6 +3,13 @@
 --
 -- Tests select distinct, and select distinct on features.
 --
+SHOW server_version \gset
+SELECT substring(:'server_version', '\d+')::int >= 15 AS server_version_ge_15;
+ server_version_ge_15
+---------------------------------------------------------------------
+ t
+(1 row)
+
 ANALYZE lineitem_hash_part;
 -- function calls are supported
 SELECT DISTINCT l_orderkey, now() FROM lineitem_hash_part LIMIT 0;
@@ -306,14 +313,12 @@ EXPLAIN (COSTS FALSE)
 -- check the plan if the hash aggreate is disabled. We expect to see sort+unique
 -- instead of aggregate plan node to handle distinct.
 SET enable_hashagg TO off;
-SELECT public.plan_without_result_lines($Q$
 EXPLAIN (COSTS FALSE)
 	SELECT DISTINCT count(*)
 		FROM lineitem_hash_part
 		GROUP BY l_suppkey, l_linenumber
 		ORDER BY 1;
-$Q$);
+                                             QUERY PLAN
-                                        plan_without_result_lines
 ---------------------------------------------------------------------
  Unique
    ->  Sort
@@ -382,15 +387,13 @@ EXPLAIN (COSTS FALSE)
 -- check the plan if the hash aggreate is disabled. Similar to the explain of
 -- the query above.
 SET enable_hashagg TO off;
-SELECT public.plan_without_result_lines($Q$
 EXPLAIN (COSTS FALSE)
 	SELECT DISTINCT l_suppkey, count(*)
 		FROM lineitem_hash_part
 		GROUP BY l_suppkey, l_linenumber
 		ORDER BY 1
 		LIMIT 10;
-$Q$);
+                                                     QUERY PLAN
-                                              plan_without_result_lines
 ---------------------------------------------------------------------
  Limit
    ->  Unique
@@ -443,9 +446,10 @@ EXPLAIN (COSTS FALSE)
                                                       QUERY PLAN
 ---------------------------------------------------------------------
  Limit
-   ->  Unique
    ->  Sort
          Sort Key: remote_scan.l_suppkey, ((pg_catalog.sum(remote_scan.avg) / pg_catalog.sum(remote_scan.avg_1)))
+         ->  HashAggregate
+               Group Key: remote_scan.l_suppkey, (pg_catalog.sum(remote_scan.avg) / pg_catalog.sum(remote_scan.avg_1))
                ->  HashAggregate
                      Group Key: remote_scan.l_suppkey, remote_scan.worker_column_4
                      ->  Custom Scan (Citus Adaptive)
@@ -456,20 +460,18 @@ EXPLAIN (COSTS FALSE)
                                  ->  HashAggregate
                                        Group Key: l_suppkey, l_linenumber
                                        ->  Seq Scan on lineitem_hash_part_360041 lineitem_hash_part
-(14 rows)
+(15 rows)
 
 -- check the plan if the hash aggreate is disabled. This explain errors out due
 -- to a bug right now, expectation must be corrected after fixing it.
 SET enable_hashagg TO off;
-SELECT public.plan_without_result_lines($Q$
 EXPLAIN (COSTS FALSE)
 	SELECT DISTINCT l_suppkey, avg(l_partkey)
 		FROM lineitem_hash_part
 		GROUP BY l_suppkey, l_linenumber
 		ORDER BY 1,2
 		LIMIT 10;
-$Q$);
+                                                       QUERY PLAN
-                                               plan_without_result_lines
 ---------------------------------------------------------------------
  Limit
    ->  Unique
@@ -539,15 +541,13 @@ EXPLAIN (COSTS FALSE)
 -- check the plan if the hash aggreate is disabled. We expect to see sort+unique to
 -- handle distinct on.
 SET enable_hashagg TO off;
-SELECT public.plan_without_result_lines($Q$
 EXPLAIN (COSTS FALSE)
 	SELECT DISTINCT ON (l_suppkey) avg(l_partkey)
 		FROM lineitem_hash_part
 		GROUP BY l_suppkey, l_linenumber
 		ORDER BY l_suppkey,1
 		LIMIT 10;
-$Q$);
+                                                          QUERY PLAN
-                                                  plan_without_result_lines
 ---------------------------------------------------------------------
  Limit
    ->  Unique
@@ -598,9 +598,10 @@ EXPLAIN (COSTS FALSE)
                                                QUERY PLAN
 ---------------------------------------------------------------------
  Limit
-   ->  Unique
    ->  Sort
          Sort Key: ((sum(remote_scan.avg) / (pg_catalog.sum(remote_scan.avg_1))::double precision))
+         ->  HashAggregate
+               Group Key: (sum(remote_scan.avg) / (pg_catalog.sum(remote_scan.avg_1))::double precision)
                ->  HashAggregate
                      Group Key: remote_scan.worker_column_3, remote_scan.worker_column_4
                      ->  Custom Scan (Citus Adaptive)
@@ -611,20 +612,18 @@ EXPLAIN (COSTS FALSE)
                                  ->  HashAggregate
                                        Group Key: l_suppkey, l_linenumber
                                        ->  Seq Scan on lineitem_hash_part_360041 lineitem_hash_part
-(14 rows)
+(15 rows)
 
 -- check the plan if the hash aggreate is disabled. This explain errors out due
 -- to a bug right now, expectation must be corrected after fixing it.
 SET enable_hashagg TO off;
-SELECT public.plan_without_result_lines($Q$
 EXPLAIN (COSTS FALSE)
 	SELECT DISTINCT avg(ceil(l_partkey / 2))
 		FROM lineitem_hash_part
 		GROUP BY l_suppkey, l_linenumber
 		ORDER BY 1
 		LIMIT 10;
-$Q$);
+                                                QUERY PLAN
-                                           plan_without_result_lines
 ---------------------------------------------------------------------
  Limit
    ->  Unique
@@ -675,9 +674,10 @@ EXPLAIN (COSTS FALSE)
                                                                 QUERY PLAN
 ---------------------------------------------------------------------
  Limit
-   ->  Unique
    ->  Sort
          Sort Key: (((pg_catalog.sum(remote_scan.dis))::bigint + COALESCE((pg_catalog.sum(remote_scan.dis_1))::bigint, '0'::bigint)))
+         ->  HashAggregate
+               Group Key: ((pg_catalog.sum(remote_scan.dis))::bigint + COALESCE((pg_catalog.sum(remote_scan.dis_1))::bigint, '0'::bigint))
                ->  HashAggregate
                      Group Key: remote_scan.worker_column_3, remote_scan.worker_column_4
                      ->  Custom Scan (Citus Adaptive)
@@ -688,20 +688,18 @@ EXPLAIN (COSTS FALSE)
                                  ->  HashAggregate
                                        Group Key: l_suppkey, l_linenumber
                                        ->  Seq Scan on lineitem_hash_part_360041 lineitem_hash_part
-(14 rows)
+(15 rows)
 
 -- check the plan if the hash aggreate is disabled. This explain errors out due
 -- to a bug right now, expectation must be corrected after fixing it.
 SET enable_hashagg TO off;
-SELECT public.plan_without_result_lines($Q$
 EXPLAIN (COSTS FALSE)
 	SELECT DISTINCT sum(l_suppkey) + count(l_partkey) AS dis
 		FROM lineitem_hash_part
 		GROUP BY l_suppkey, l_linenumber
 		ORDER BY 1
 		LIMIT 10;
-$Q$);
+                                                                 QUERY PLAN
-                                                         plan_without_result_lines
 ---------------------------------------------------------------------
  Limit
    ->  Unique
@@ -910,14 +908,12 @@ EXPLAIN (COSTS FALSE)
 
 -- check the plan if the hash aggreate is disabled
 SET enable_hashagg TO off;
-SELECT public.plan_without_result_lines($Q$
 EXPLAIN (COSTS FALSE)
 	SELECT DISTINCT ceil(count(case when l_partkey > 100000 THEN 1 ELSE 0 END) / 2) AS count
 		FROM lineitem_hash_part
 		GROUP BY l_suppkey
 		ORDER BY 1;
-$Q$);
+                                                       QUERY PLAN
-                                               plan_without_result_lines
 ---------------------------------------------------------------------
  Unique
    ->  Sort

src/test/regress/expected/multi_sql_function.out

@@ -320,6 +320,9 @@ INSERT INTO test_parameterized_sql VALUES(1, 1);
 SELECT * FROM test_parameterized_sql_function(1);
 ERROR:  cannot perform distributed planning on this query because parameterized queries for SQL functions referencing distributed tables are not supported
 HINT:  Consider using PL/pgSQL functions instead.
+SELECT (SELECT 1 FROM test_parameterized_sql limit 1) FROM test_parameterized_sql_function(1);
+ERROR:  cannot perform distributed planning on this query because parameterized queries for SQL functions referencing distributed tables are not supported
+HINT:  Consider using PL/pgSQL functions instead.
 SELECT test_parameterized_sql_function_in_subquery_where(1);
 ERROR:  could not create distributed plan
 DETAIL:  Possibly this is caused by the use of parameters in SQL functions, which is not supported in Citus.

src/test/regress/expected/multi_test_helpers.out

@@ -17,15 +17,10 @@ BEGIN
 END;
 $$LANGUAGE plpgsql;
 -- Create a function to ignore worker plans in explain output
--- Also remove extra "->  Result" lines for PG15 support
 CREATE OR REPLACE FUNCTION coordinator_plan(explain_command text, out query_plan text)
 RETURNS SETOF TEXT AS $$
 BEGIN
   FOR query_plan IN execute explain_command LOOP
-    IF (query_plan LIKE '%->  Result%' OR query_plan = 'Result')
-    THEN
-        CONTINUE;
-    END IF;
     RETURN next;
     IF query_plan LIKE '%Task Count:%'
     THEN
@@ -36,16 +31,12 @@ BEGIN
 END; $$ language plpgsql;
 -- Create a function to ignore worker plans in explain output
 -- It also shows task count for plan and subplans
--- Also remove extra "->  Result" lines for PG15 support
 CREATE OR REPLACE FUNCTION coordinator_plan_with_subplans(explain_command text, out query_plan text)
 RETURNS SETOF TEXT AS $$
 DECLARE
     task_count_line_reached boolean := false;
 BEGIN
   FOR query_plan IN execute explain_command LOOP
-    IF (query_plan LIKE '%->  Result%' OR query_plan = 'Result') THEN
-        CONTINUE;
-    END IF;
     IF NOT task_count_line_reached THEN
         RETURN next;
     END IF;
@@ -59,19 +50,6 @@ BEGIN
   END LOOP;
   RETURN;
 END; $$ language plpgsql;
--- Create a function to ignore "->  Result" lines for PG15 support
--- In PG15 there are some extra "->  Result" lines
-CREATE OR REPLACE FUNCTION plan_without_result_lines(explain_command text, out query_plan text)
-RETURNS SETOF TEXT AS $$
-BEGIN
-  FOR query_plan IN execute explain_command LOOP
-    IF (query_plan LIKE '%->  Result%' OR query_plan = 'Result') THEN
-        CONTINUE;
-    END IF;
-    RETURN next;
-  END LOOP;
-  RETURN;
-END; $$ language plpgsql;
 -- Create a function to normalize Memory Usage, Buckets, Batches
 CREATE OR REPLACE FUNCTION plan_normalize_memory(explain_command text, out query_plan text)
 RETURNS SETOF TEXT AS $$
@@ -81,18 +59,6 @@ BEGIN
     RETURN NEXT;
   END LOOP;
 END; $$ language plpgsql;
--- Create a function to remove arrows from the explain plan
-CREATE OR REPLACE FUNCTION plan_without_arrows(explain_command text, out query_plan text)
-RETURNS SETOF TEXT AS $$
-BEGIN
-  FOR query_plan IN execute explain_command LOOP
-    IF (query_plan LIKE '%->  Result%' OR query_plan = 'Result') THEN
-        CONTINUE;
-    END IF;
-    query_plan := regexp_replace(query_plan, '( )*->  (.*)',  '\2', 'g');
-    RETURN NEXT;
-  END LOOP;
-END; $$ language plpgsql;
 -- helper function that returns true if output of given explain has "is not null" (case in-sensitive)
 CREATE OR REPLACE FUNCTION explain_has_is_not_null(explain_command text)
 RETURNS BOOLEAN AS $$

src/test/regress/expected/pg15.out

@@ -168,6 +168,10 @@ SELECT * FROM sale_triggers ORDER BY 1, 2;
  truncate_trigger_xxxxxxx  | sale_newyork    | O
 (6 rows)
 
+-- test that we can't rename a distributed clone trigger
+ALTER TRIGGER "new_record_sale_trigger" ON "pg15"."sale_newyork" RENAME TO "another_trigger_name";
+ERROR:  cannot rename trigger "new_record_sale_trigger" on table "sale_newyork"
+HINT:  Rename trigger on partitioned table "sale" instead.
 --
 -- In PG15, For GENERATED columns, all dependencies of the generation
 -- expression are recorded as NORMAL dependencies of the column itself.
@@ -388,9 +392,37 @@ ON (true)
 WHEN MATCHED THEN
     UPDATE SET x = (SELECT count(*) FROM tbl2);
 ERROR:  MERGE command is not supported on Citus tables yet
+-- test numeric types with negative scale
+CREATE TABLE numeric_negative_scale(numeric_column numeric(3,-1), orig_value int);
+INSERT into numeric_negative_scale SELECT x,x FROM generate_series(111, 115) x;
+-- verify that we can not distribute by a column that has numeric type with negative scale
+SELECT create_distributed_table('numeric_negative_scale','numeric_column');
+ERROR:  cannot distribute relation: numeric_negative_scale
+DETAIL:  Distribution column must not use numeric type with negative scale
+-- However, we can distribute by other columns
+SELECT create_distributed_table('numeric_negative_scale','orig_value');
+NOTICE:  Copying data from local table...
+NOTICE:  copying the data has completed
+DETAIL:  The local data in the table is no longer visible, but is still on disk.
+HINT:  To remove the local data, run: SELECT truncate_local_data_after_distributing_table($$pg15.numeric_negative_scale$$)
+ create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+SELECT * FROM numeric_negative_scale ORDER BY 1,2;
+ numeric_column | orig_value
+---------------------------------------------------------------------
+            110 |        111
+            110 |        112
+            110 |        113
+            110 |        114
+            120 |        115
+(5 rows)
+
 -- Clean up
 DROP SCHEMA pg15 CASCADE;
-NOTICE:  drop cascades to 9 other objects
+NOTICE:  drop cascades to 10 other objects
 DETAIL:  drop cascades to collation german_phonebook_test
 drop cascades to collation default_provider
 drop cascades to table sale
@@ -400,3 +432,4 @@ drop cascades to view sale_triggers
 drop cascades to table generated_stored_ref
 drop cascades to table tbl1
 drop cascades to table tbl2
+drop cascades to table numeric_negative_scale

src/test/regress/expected/upgrade_distributed_triggers_after.out

@@ -0,0 +1,243 @@
+--
+-- UPGRADE_DISTRIBUTED_TRIGGERS_AFTER
+--
+-- In PG15, Renaming triggers on partitioned tables
+-- recurses to renaming the triggers on the partitions as well.
+-- Relevant PG commit:
+-- 80ba4bb383538a2ee846fece6a7b8da9518b6866
+--
+-- this test is relevant only for pg14-15 upgrade
+--
+SHOW server_version \gset
+SELECT substring(:'server_version', '\d+')::int = 15 AS server_version_eq_15
+\gset
+\if :server_version_eq_15
+\else
+\q
+\endif
+SET search_path TO upgrade_distributed_triggers, public;
+SET citus.shard_count TO 4;
+SET citus.enable_unsafe_triggers TO true;
+SELECT run_command_on_workers('ALTER SYSTEM SET citus.enable_unsafe_triggers TO true;');
+       run_command_on_workers
+---------------------------------------------------------------------
+ (localhost,10201,t,"ALTER SYSTEM")
+ (localhost,10202,t,"ALTER SYSTEM")
+(2 rows)
+
+SELECT run_command_on_workers('SELECT pg_reload_conf();');
+ run_command_on_workers
+---------------------------------------------------------------------
+ (localhost,10201,t,t)
+ (localhost,10202,t,t)
+(2 rows)
+
+-- after PG15 upgrade, all child triggers have the same name with the parent triggers
+-- check that the workers are also updated
+SELECT * FROM sale_triggers ORDER BY 1, 2;
+           tgname            |     tgrelid     | tgenabled
+---------------------------------------------------------------------
+ another_renamed_trigger     | sale            | O
+ another_renamed_trigger     | sale_newyork    | O
+ another_renamed_trigger     | sale_california | O
+ not_renamed_trigger         | sale            | O
+ not_renamed_trigger         | sale_newyork    | O
+ not_renamed_trigger         | sale_california | O
+ renamed_record_sale_trigger | sale            | O
+ renamed_record_sale_trigger | sale_newyork    | O
+ renamed_record_sale_trigger | sale_california | O
+ truncate_trigger_xxxxxxx      | sale            | O
+ truncate_trigger_xxxxxxx      | sale_newyork    | O
+ truncate_trigger_xxxxxxx      | sale_california | O
+(12 rows)
+
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'record_sale_trigger%' ORDER BY 1,2;
+ tgrelid | tgname
+---------------------------------------------------------------------
+(0 rows)
+
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'renamed_record_sale_trigger%' ORDER BY 1,2;
+     tgrelid     |           tgname
+---------------------------------------------------------------------
+ sale            | renamed_record_sale_trigger
+ sale_california | renamed_record_sale_trigger
+ sale_newyork    | renamed_record_sale_trigger
+(3 rows)
+
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'record_sale_trigger%';$$);
+ run_command_on_workers
+---------------------------------------------------------------------
+ (localhost,10201,t,0)
+ (localhost,10202,t,0)
+(2 rows)
+
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'renamed_record_sale_trigger%';$$);
+ run_command_on_workers
+---------------------------------------------------------------------
+ (localhost,10201,t,9)
+ (localhost,10202,t,9)
+(2 rows)
+
+-- create another partition to verify that all is safe and sound
+CREATE TABLE sale_alabama PARTITION OF sale FOR VALUES IN ('AL');
+SELECT * FROM sale_triggers ORDER BY 1, 2;
+           tgname            |     tgrelid     | tgenabled
+---------------------------------------------------------------------
+ another_renamed_trigger     | sale            | O
+ another_renamed_trigger     | sale_newyork    | O
+ another_renamed_trigger     | sale_california | O
+ another_renamed_trigger     | sale_alabama    | O
+ not_renamed_trigger         | sale            | O
+ not_renamed_trigger         | sale_newyork    | O
+ not_renamed_trigger         | sale_california | O
+ not_renamed_trigger         | sale_alabama    | O
+ renamed_record_sale_trigger | sale            | O
+ renamed_record_sale_trigger | sale_newyork    | O
+ renamed_record_sale_trigger | sale_california | O
+ renamed_record_sale_trigger | sale_alabama    | O
+ truncate_trigger_xxxxxxx      | sale            | O
+ truncate_trigger_xxxxxxx      | sale_newyork    | O
+ truncate_trigger_xxxxxxx      | sale_california | O
+ truncate_trigger_xxxxxxx      | sale_alabama    | O
+(16 rows)
+
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'record_sale_trigger%' ORDER BY 1,2;
+ tgrelid | tgname
+---------------------------------------------------------------------
+(0 rows)
+
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'renamed_record_sale_trigger%' ORDER BY 1,2;
+     tgrelid     |           tgname
+---------------------------------------------------------------------
+ sale            | renamed_record_sale_trigger
+ sale_alabama    | renamed_record_sale_trigger
+ sale_california | renamed_record_sale_trigger
+ sale_newyork    | renamed_record_sale_trigger
+(4 rows)
+
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'record_sale_trigger%';$$);
+ run_command_on_workers
+---------------------------------------------------------------------
+ (localhost,10201,t,0)
+ (localhost,10202,t,0)
+(2 rows)
+
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'renamed_record_sale_trigger%';$$);
+ run_command_on_workers
+---------------------------------------------------------------------
+ (localhost,10201,t,12)
+ (localhost,10202,t,12)
+(2 rows)
+
+-- drop a trigger to verify that all is safe and sound
+DROP TRIGGER another_renamed_trigger ON sale;
+SELECT * FROM sale_triggers ORDER BY 1, 2;
+           tgname            |     tgrelid     | tgenabled
+---------------------------------------------------------------------
+ not_renamed_trigger         | sale            | O
+ not_renamed_trigger         | sale_newyork    | O
+ not_renamed_trigger         | sale_california | O
+ not_renamed_trigger         | sale_alabama    | O
+ renamed_record_sale_trigger | sale            | O
+ renamed_record_sale_trigger | sale_newyork    | O
+ renamed_record_sale_trigger | sale_california | O
+ renamed_record_sale_trigger | sale_alabama    | O
+ truncate_trigger_xxxxxxx      | sale            | O
+ truncate_trigger_xxxxxxx      | sale_newyork    | O
+ truncate_trigger_xxxxxxx      | sale_california | O
+ truncate_trigger_xxxxxxx      | sale_alabama    | O
+(12 rows)
+
+-- rename a trigger - note that it also renames the triggers on the partitions
+ALTER TRIGGER "renamed_record_sale_trigger" ON "sale" RENAME TO "final_renamed_record_sale_trigger";
+SELECT * FROM sale_triggers ORDER BY 1, 2;
+              tgname               |     tgrelid     | tgenabled
+---------------------------------------------------------------------
+ final_renamed_record_sale_trigger | sale            | O
+ final_renamed_record_sale_trigger | sale_newyork    | O
+ final_renamed_record_sale_trigger | sale_california | O
+ final_renamed_record_sale_trigger | sale_alabama    | O
+ not_renamed_trigger               | sale            | O
+ not_renamed_trigger               | sale_newyork    | O
+ not_renamed_trigger               | sale_california | O
+ not_renamed_trigger               | sale_alabama    | O
+ truncate_trigger_xxxxxxx            | sale            | O
+ truncate_trigger_xxxxxxx            | sale_newyork    | O
+ truncate_trigger_xxxxxxx            | sale_california | O
+ truncate_trigger_xxxxxxx            | sale_alabama    | O
+(12 rows)
+
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'renamed_record_sale_trigger%' ORDER BY 1,2;
+ tgrelid | tgname
+---------------------------------------------------------------------
+(0 rows)
+
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'final_renamed_record_sale_trigger%' ORDER BY 1,2;
+     tgrelid     |              tgname
+---------------------------------------------------------------------
+ sale            | final_renamed_record_sale_trigger
+ sale_alabama    | final_renamed_record_sale_trigger
+ sale_california | final_renamed_record_sale_trigger
+ sale_newyork    | final_renamed_record_sale_trigger
+(4 rows)
+
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'renamed_record_sale_trigger%';$$);
+ run_command_on_workers
+---------------------------------------------------------------------
+ (localhost,10201,t,0)
+ (localhost,10202,t,0)
+(2 rows)
+
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'final_renamed_record_sale_trigger%';$$);
+ run_command_on_workers
+---------------------------------------------------------------------
+ (localhost,10201,t,12)
+ (localhost,10202,t,12)
+(2 rows)
+
+DROP TRIGGER final_renamed_record_sale_trigger ON sale;
+-- create another trigger and rename it
+CREATE TRIGGER yet_another_trigger
+AFTER INSERT OR UPDATE OR DELETE ON sale
+FOR EACH ROW EXECUTE FUNCTION upgrade_distributed_triggers.record_sale();
+ALTER TRIGGER "yet_another_trigger" ON "sale" RENAME TO "renamed_yet_another_trigger";
+SELECT * FROM sale_triggers ORDER BY 1, 2;
+           tgname            |     tgrelid     | tgenabled
+---------------------------------------------------------------------
+ not_renamed_trigger         | sale            | O
+ not_renamed_trigger         | sale_newyork    | O
+ not_renamed_trigger         | sale_california | O
+ not_renamed_trigger         | sale_alabama    | O
+ renamed_yet_another_trigger | sale            | O
+ renamed_yet_another_trigger | sale_newyork    | O
+ renamed_yet_another_trigger | sale_california | O
+ renamed_yet_another_trigger | sale_alabama    | O
+ truncate_trigger_xxxxxxx      | sale            | O
+ truncate_trigger_xxxxxxx      | sale_newyork    | O
+ truncate_trigger_xxxxxxx      | sale_california | O
+ truncate_trigger_xxxxxxx      | sale_alabama    | O
+(12 rows)
+
+-- after upgrade to PG15, test that we can't rename a distributed clone trigger
+ALTER TRIGGER "renamed_yet_another_trigger" ON "sale_alabama" RENAME TO "another_trigger_name";
+ERROR:  cannot rename trigger "renamed_yet_another_trigger" on table "sale_alabama"
+HINT:  Rename trigger on partitioned table "sale" instead.
+SELECT count(*) FROM pg_trigger WHERE tgname like 'another_trigger_name%';
+ count
+---------------------------------------------------------------------
+     0
+(1 row)
+
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'another_trigger_name%';$$);
+ run_command_on_workers
+---------------------------------------------------------------------
+ (localhost,10201,t,0)
+ (localhost,10202,t,0)
+(2 rows)
+
+DROP SCHEMA upgrade_distributed_triggers CASCADE;
+NOTICE:  drop cascades to 4 other objects
+DETAIL:  drop cascades to function record_sale()
+drop cascades to table sale
+drop cascades to table record_sale
+drop cascades to view sale_triggers

src/test/regress/expected/upgrade_distributed_triggers_after_0.out

@@ -0,0 +1,16 @@
+--
+-- UPGRADE_DISTRIBUTED_TRIGGERS_AFTER
+--
+-- In PG15, Renaming triggers on partitioned tables
+-- recurses to renaming the triggers on the partitions as well.
+-- Relevant PG commit:
+-- 80ba4bb383538a2ee846fece6a7b8da9518b6866
+--
+-- this test is relevant only for pg14-15 upgrade
+--
+SHOW server_version \gset
+SELECT substring(:'server_version', '\d+')::int = 15 AS server_version_eq_15
+\gset
+\if :server_version_eq_15
+\else
+\q

src/test/regress/expected/upgrade_distributed_triggers_before.out

@@ -0,0 +1,246 @@
+--
+-- UPGRADE_DISTRIBUTED_TRIGGERS_BEFORE
+--
+-- PRE PG15, Renaming the parent triggers on partitioned tables doesn't
+-- recurse to renaming the child triggers on the partitions as well.
+--
+-- this test is relevant only for pg14-15 upgrade
+--
+SHOW server_version \gset
+SELECT substring(:'server_version', '\d+')::int = 14 AS server_version_eq_14
+\gset
+\if :server_version_eq_14
+\else
+\q
+\endif
+CREATE SCHEMA upgrade_distributed_triggers;
+SET search_path TO upgrade_distributed_triggers, public;
+SET citus.shard_count TO 4;
+SET citus.enable_unsafe_triggers TO true;
+SELECT run_command_on_workers('ALTER SYSTEM SET citus.enable_unsafe_triggers TO true;');
+       run_command_on_workers
+---------------------------------------------------------------------
+ (localhost,10201,t,"ALTER SYSTEM")
+ (localhost,10202,t,"ALTER SYSTEM")
+(2 rows)
+
+SELECT run_command_on_workers('SELECT pg_reload_conf();');
+ run_command_on_workers
+---------------------------------------------------------------------
+ (localhost,10201,t,t)
+ (localhost,10202,t,t)
+(2 rows)
+
+CREATE TABLE sale(
+    sale_date date not null,
+    state_code text,
+    product_sku text,
+    units integer)
+    PARTITION BY list (state_code);
+ALTER TABLE sale ADD CONSTRAINT sale_pk PRIMARY KEY (state_code, sale_date);
+CREATE TABLE sale_newyork PARTITION OF sale FOR VALUES IN ('NY');
+CREATE TABLE record_sale(
+    operation_type text not null,
+    product_sku text,
+    state_code text,
+    units integer,
+    PRIMARY KEY(state_code, product_sku, operation_type, units));
+SELECT create_distributed_table('sale', 'state_code');
+ create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+CREATE TABLE sale_california PARTITION OF sale FOR VALUES IN ('CA');
+SELECT create_distributed_table('record_sale', 'state_code', colocate_with := 'sale');
+ create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+CREATE OR REPLACE FUNCTION record_sale()
+RETURNS trigger
+AS $$
+BEGIN
+    INSERT INTO upgrade_distributed_triggers.record_sale(operation_type, product_sku, state_code, units)
+    VALUES (TG_OP, NEW.product_sku, NEW.state_code, NEW.units);
+    RETURN NULL;
+END;
+$$ LANGUAGE plpgsql;
+-- will rename this trigger
+CREATE TRIGGER record_sale_trigger
+AFTER INSERT OR UPDATE OR DELETE ON sale
+FOR EACH ROW EXECUTE FUNCTION upgrade_distributed_triggers.record_sale();
+-- will rename this trigger
+CREATE TRIGGER another_trigger
+AFTER INSERT OR UPDATE OR DELETE ON sale
+FOR EACH ROW EXECUTE FUNCTION upgrade_distributed_triggers.record_sale();
+-- won't rename this trigger
+CREATE TRIGGER not_renamed_trigger
+AFTER INSERT OR UPDATE OR DELETE ON sale
+FOR EACH ROW EXECUTE FUNCTION upgrade_distributed_triggers.record_sale();
+-- Trigger function should appear on workers
+SELECT proname from pg_proc WHERE oid='upgrade_distributed_triggers.record_sale'::regproc;
+   proname
+---------------------------------------------------------------------
+ record_sale
+(1 row)
+
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_proc WHERE oid='upgrade_distributed_triggers.record_sale'::regproc$$);
+ run_command_on_workers
+---------------------------------------------------------------------
+ (localhost,10201,t,1)
+ (localhost,10202,t,1)
+(2 rows)
+
+-- Trigger should appear on workers
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'record_sale_trigger%' ORDER BY 1,2;
+     tgrelid     |       tgname
+---------------------------------------------------------------------
+ sale            | record_sale_trigger
+ sale_california | record_sale_trigger
+ sale_newyork    | record_sale_trigger
+(3 rows)
+
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'record_sale_trigger%';$$);
+ run_command_on_workers
+---------------------------------------------------------------------
+ (localhost,10201,t,9)
+ (localhost,10202,t,9)
+(2 rows)
+
+CREATE VIEW sale_triggers AS
+    SELECT tgname, tgrelid::regclass, tgenabled
+    FROM pg_trigger
+    WHERE tgrelid::regclass::text like 'sale%'
+    ORDER BY 1, 2;
+SELECT * FROM sale_triggers ORDER BY 1, 2;
+         tgname         |     tgrelid     | tgenabled
+---------------------------------------------------------------------
+ another_trigger        | sale            | O
+ another_trigger        | sale_newyork    | O
+ another_trigger        | sale_california | O
+ not_renamed_trigger    | sale            | O
+ not_renamed_trigger    | sale_newyork    | O
+ not_renamed_trigger    | sale_california | O
+ record_sale_trigger    | sale            | O
+ record_sale_trigger    | sale_newyork    | O
+ record_sale_trigger    | sale_california | O
+ truncate_trigger_xxxxxxx | sale            | O
+ truncate_trigger_xxxxxxx | sale_newyork    | O
+ truncate_trigger_xxxxxxx | sale_california | O
+(12 rows)
+
+-- rename the triggers - note that it doesn't rename the
+-- triggers on the partitions
+ALTER TRIGGER record_sale_trigger ON sale RENAME TO renamed_record_sale_trigger;
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'record_sale_trigger%' ORDER BY 1,2;
+     tgrelid     |       tgname
+---------------------------------------------------------------------
+ sale_california | record_sale_trigger
+ sale_newyork    | record_sale_trigger
+(2 rows)
+
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'renamed_record_sale_trigger%' ORDER BY 1,2;
+ tgrelid |           tgname
+---------------------------------------------------------------------
+ sale    | renamed_record_sale_trigger
+(1 row)
+
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'record_sale_trigger%';$$);
+ run_command_on_workers
+---------------------------------------------------------------------
+ (localhost,10201,t,6)
+ (localhost,10202,t,6)
+(2 rows)
+
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'renamed_record_sale_trigger%';$$);
+ run_command_on_workers
+---------------------------------------------------------------------
+ (localhost,10201,t,3)
+ (localhost,10202,t,3)
+(2 rows)
+
+ALTER TRIGGER another_trigger ON sale RENAME TO another_renamed_trigger;
+SELECT * FROM sale_triggers ORDER BY 1, 2;
+           tgname            |     tgrelid     | tgenabled
+---------------------------------------------------------------------
+ another_renamed_trigger     | sale            | O
+ another_trigger             | sale_newyork    | O
+ another_trigger             | sale_california | O
+ not_renamed_trigger         | sale            | O
+ not_renamed_trigger         | sale_newyork    | O
+ not_renamed_trigger         | sale_california | O
+ record_sale_trigger         | sale_newyork    | O
+ record_sale_trigger         | sale_california | O
+ renamed_record_sale_trigger | sale            | O
+ truncate_trigger_xxxxxxx      | sale            | O
+ truncate_trigger_xxxxxxx      | sale_newyork    | O
+ truncate_trigger_xxxxxxx      | sale_california | O
+(12 rows)
+
+-- although the child triggers haven't been renamed to
+-- another_renamed_trigger, they are dropped when the parent is dropped
+DROP TRIGGER another_renamed_trigger ON sale;
+SELECT * FROM sale_triggers ORDER BY 1, 2;
+           tgname            |     tgrelid     | tgenabled
+---------------------------------------------------------------------
+ not_renamed_trigger         | sale            | O
+ not_renamed_trigger         | sale_newyork    | O
+ not_renamed_trigger         | sale_california | O
+ record_sale_trigger         | sale_newyork    | O
+ record_sale_trigger         | sale_california | O
+ renamed_record_sale_trigger | sale            | O
+ truncate_trigger_xxxxxxx      | sale            | O
+ truncate_trigger_xxxxxxx      | sale_newyork    | O
+ truncate_trigger_xxxxxxx      | sale_california | O
+(9 rows)
+
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'another_renamed_trigger%' ORDER BY 1,2;
+ tgrelid | tgname
+---------------------------------------------------------------------
+(0 rows)
+
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'another_trigger%' ORDER BY 1,2;
+ tgrelid | tgname
+---------------------------------------------------------------------
+(0 rows)
+
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'another_renamed_trigger%';$$);
+ run_command_on_workers
+---------------------------------------------------------------------
+ (localhost,10201,t,0)
+ (localhost,10202,t,0)
+(2 rows)
+
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'another_trigger%';$$);
+ run_command_on_workers
+---------------------------------------------------------------------
+ (localhost,10201,t,0)
+ (localhost,10202,t,0)
+(2 rows)
+
+CREATE TRIGGER another_trigger
+AFTER INSERT OR UPDATE OR DELETE ON sale
+FOR EACH ROW EXECUTE FUNCTION upgrade_distributed_triggers.record_sale();
+ALTER TRIGGER another_trigger ON sale RENAME TO another_renamed_trigger;
+SELECT * FROM sale_triggers ORDER BY 1, 2;
+           tgname            |     tgrelid     | tgenabled
+---------------------------------------------------------------------
+ another_renamed_trigger     | sale            | O
+ another_trigger             | sale_newyork    | O
+ another_trigger             | sale_california | O
+ not_renamed_trigger         | sale            | O
+ not_renamed_trigger         | sale_newyork    | O
+ not_renamed_trigger         | sale_california | O
+ record_sale_trigger         | sale_newyork    | O
+ record_sale_trigger         | sale_california | O
+ renamed_record_sale_trigger | sale            | O
+ truncate_trigger_xxxxxxx      | sale            | O
+ truncate_trigger_xxxxxxx      | sale_newyork    | O
+ truncate_trigger_xxxxxxx      | sale_california | O
+(12 rows)
+
+-- check that we can't rename child triggers on partitions of distributed tables
+ALTER TRIGGER another_trigger ON sale_newyork RENAME TO another_renamed_trigger;
+ERROR:  cannot rename child triggers on distributed partitions

src/test/regress/expected/upgrade_distributed_triggers_before_0.out

@@ -0,0 +1,14 @@
+--
+-- UPGRADE_DISTRIBUTED_TRIGGERS_BEFORE
+--
+-- PRE PG15, Renaming the parent triggers on partitioned tables doesn't
+-- recurse to renaming the child triggers on the partitions as well.
+--
+-- this test is relevant only for pg14-15 upgrade
+--
+SHOW server_version \gset
+SELECT substring(:'server_version', '\d+')::int = 14 AS server_version_eq_14
+\gset
+\if :server_version_eq_14
+\else
+\q

src/test/regress/expected/window_functions.out

@@ -1491,12 +1491,10 @@ LIMIT 5;
 (17 rows)
 
 -- Grouping can be pushed down with aggregates even when window function can't
-SELECT public.plan_without_result_lines($Q$
 EXPLAIN (COSTS FALSE)
 SELECT user_id, count(value_1), stddev(value_1), count(user_id) OVER (PARTITION BY random())
 FROM users_table GROUP BY user_id HAVING avg(value_1) > 2 LIMIT 1;
-$Q$);
+                                   QUERY PLAN
-                               plan_without_result_lines
 ---------------------------------------------------------------------
  Limit
    ->  WindowAgg

src/test/regress/expected/window_functions_0.out

@@ -1495,12 +1495,10 @@ LIMIT 5;
 (18 rows)
 
 -- Grouping can be pushed down with aggregates even when window function can't
-SELECT public.plan_without_result_lines($Q$
 EXPLAIN (COSTS FALSE)
 SELECT user_id, count(value_1), stddev(value_1), count(user_id) OVER (PARTITION BY random())
 FROM users_table GROUP BY user_id HAVING avg(value_1) > 2 LIMIT 1;
-$Q$);
+                                   QUERY PLAN
-                               plan_without_result_lines
 ---------------------------------------------------------------------
  Limit
    ->  WindowAgg

src/test/regress/multi_schedule

@@ -86,7 +86,7 @@ test: multi_agg_type_conversion multi_count_type_conversion recursive_relation_p
 test: multi_partition_pruning single_hash_repartition_join unsupported_lateral_subqueries
 test: multi_join_pruning multi_hash_pruning intermediate_result_pruning
 test: multi_null_minmax_value_pruning cursors
-test: modification_correctness
+test: modification_correctness adv_lock_permission
 test: multi_query_directory_cleanup
 test: multi_task_assignment_policy multi_cross_shard
 test: multi_utility_statements

src/test/regress/spec/isolation_citus_dist_activity.spec

@@ -9,7 +9,7 @@ setup
     AS 'citus', $$test_assign_global_pid$$;
     SET citus.shard_replication_factor TO 1;
     SET citus.shard_count TO 4;
-    select setval('pg_dist_shardid_seq', GREATEST(1300000, nextval('pg_dist_shardid_seq')));
+    ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 1300001;
 
     CREATE TABLE test_table(column1 int, column2 int);
     SELECT create_distributed_table('test_table', 'column1');

src/test/regress/spec/isolation_tenant_isolation.spec

@@ -44,6 +44,13 @@ step "s1-update"
 	UPDATE isolation_table SET value = 5 WHERE id = 5;
 }
 
+step "s1-update-complex"
+{
+	UPDATE isolation_table SET value = 5 WHERE id IN (
+        SELECT max(id) FROM isolation_table
+    );
+}
+
 step "s1-delete"
 {
 	DELETE FROM isolation_table WHERE id = 5;
@@ -119,6 +126,7 @@ step "s2-print-index-count"
 // we expect DML/DDL queries to fail because the shard they are waiting for is destroyed
 permutation "s1-load-cache" "s1-insert" "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-update" "s2-commit" "s1-commit" "s2-print-cluster"
 permutation "s1-load-cache" "s1-insert" "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-delete" "s2-commit" "s1-commit" "s2-print-cluster"
+permutation "s1-load-cache" "s1-insert" "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-update-complex" "s2-commit" "s1-commit" "s2-print-cluster"
 permutation "s1-load-cache" "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-insert" "s2-commit" "s1-commit" "s2-print-cluster"
 permutation "s1-load-cache" "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-copy" "s2-commit" "s1-commit" "s2-print-cluster"
 permutation "s1-load-cache" "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-ddl" "s2-commit" "s1-commit" "s2-print-cluster" "s2-print-index-count"
@@ -127,6 +135,7 @@ permutation "s1-load-cache" "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant
 // the same tests without loading the cache at first
 permutation "s1-insert" "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-update" "s2-commit" "s1-commit" "s2-print-cluster"
 permutation "s1-insert" "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-delete" "s2-commit" "s1-commit" "s2-print-cluster"
+permutation "s1-insert" "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-update-complex" "s2-commit" "s1-commit" "s2-print-cluster"
 permutation "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-insert" "s2-commit" "s1-commit" "s2-print-cluster"
 permutation "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-copy" "s2-commit" "s1-commit" "s2-print-cluster"
 permutation "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-ddl" "s2-commit" "s1-commit" "s2-print-cluster" "s2-print-index-count"

src/test/regress/spec/isolation_tenant_isolation_nonblocking.spec

@@ -51,6 +51,13 @@ step "s1-update"
 	UPDATE isolation_table SET value = 5 WHERE id = 5;
 }
 
+step "s1-update-complex"
+{
+	UPDATE isolation_table SET value = 5 WHERE id IN (
+        SELECT max(id) FROM isolation_table
+    );
+}
+
 step "s1-delete"
 {
 	DELETE FROM isolation_table WHERE id = 5;
@@ -148,12 +155,14 @@ step "s3-release-advisory-lock"
 // we expect DML queries of s2 to succeed without being blocked.
 permutation "s1-load-cache" "s1-insert" "s3-acquire-advisory-lock" "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-update" "s1-commit" "s3-release-advisory-lock" "s2-commit" "s2-print-cluster"
 permutation "s1-load-cache" "s1-insert" "s3-acquire-advisory-lock" "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-delete" "s1-commit" "s3-release-advisory-lock" "s2-commit" "s2-print-cluster"
+permutation "s1-load-cache" "s1-insert" "s3-acquire-advisory-lock" "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-update-complex" "s1-commit" "s3-release-advisory-lock" "s2-commit" "s2-print-cluster"
 permutation "s1-load-cache" "s3-acquire-advisory-lock" "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-insert" "s1-commit" "s3-release-advisory-lock" "s2-commit" "s2-print-cluster"
 permutation "s1-load-cache" "s3-acquire-advisory-lock" "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-copy" "s1-commit" "s3-release-advisory-lock" "s2-commit" "s2-print-cluster"
 
 // the same tests without loading the cache at first
 permutation "s1-insert" "s3-acquire-advisory-lock" "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-update" "s1-commit" "s3-release-advisory-lock" "s2-commit" "s2-print-cluster"
 permutation "s1-insert" "s3-acquire-advisory-lock" "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-delete" "s1-commit" "s3-release-advisory-lock" "s2-commit" "s2-print-cluster"
+permutation "s1-insert" "s3-acquire-advisory-lock" "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-update-complex" "s1-commit" "s3-release-advisory-lock" "s2-commit" "s2-print-cluster"
 permutation "s3-acquire-advisory-lock" "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-insert" "s1-commit" "s3-release-advisory-lock" "s2-commit" "s2-print-cluster"
 permutation "s3-acquire-advisory-lock" "s1-begin" "s1-select" "s2-begin" "s2-isolate-tenant" "s1-copy" "s1-commit" "s3-release-advisory-lock" "s2-commit" "s2-print-cluster"
 

src/test/regress/sql/adaptive_executor.sql

@@ -40,4 +40,22 @@ SELECT sum(result::bigint) FROM run_command_on_workers($$
 $$);
 END;
 
+CREATE OR REPLACE FUNCTION select_for_update()
+RETURNS void
+AS $$
+DECLARE
+    my int;
+BEGIN
+    SELECT y INTO my FROM test WHERE x = 1 FOR UPDATE;
+END;
+$$ LANGUAGE plpgsql;
+
+-- so that we can prove that we open a transaction block by logging below:
+-- "NOTICE:  issuing BEGIN TRANSACTION ISOLATION LEVEL READ COMMITTED;..."
+SET citus.log_remote_commands TO on;
+
+SELECT select_for_update();
+
+SET citus.log_remote_commands TO off;
+
 DROP SCHEMA adaptive_executor CASCADE;

src/test/regress/sql/adv_lock_permission.sql

@@ -0,0 +1,42 @@
+CREATE SCHEMA adv_lock_permission;
+SET search_path to adv_lock_permission;
+
+-- do not cache any connections, we change some settings and don't want old ones cached
+SET citus.max_cached_conns_per_worker TO 0;
+
+CREATE ROLE user_1 WITH LOGIN;
+
+CREATE TABLE reference_table_1 (A int);
+SELECT create_reference_table('reference_table_1');
+
+CREATE TABLE reference_table_2 (A int);
+SELECT create_reference_table('reference_table_2');
+
+GRANT USAGE ON SCHEMA adv_lock_permission TO user_1;
+GRANT SELECT ON reference_table_1 TO user_1;
+GRANT INSERT, UPDATE ON reference_table_2 TO user_1;
+
+SET ROLE user_1;
+
+-- do not cache any connections, we change some settings and don't want old ones cached
+SET citus.max_cached_conns_per_worker TO 0;
+SET search_path to adv_lock_permission;
+
+INSERT INTO reference_table_2 SELECT * FROM reference_table_1;
+
+SET ROLE postgres;
+-- do not cache any connections, we change some settings and don't want old ones cached
+SET citus.max_cached_conns_per_worker TO 0;
+
+-- change the role so that it can skip permission checks
+ALTER ROLE user_1 SET citus.skip_advisory_lock_permission_checks TO on;
+
+SET ROLE user_1;
+
+SET citus.max_cached_conns_per_worker TO 0;
+INSERT INTO reference_table_2 SELECT * FROM reference_table_1;
+
+SET ROLE postgres;
+SET client_min_messages TO ERROR;
+DROP SCHEMA adv_lock_permission CASCADE;
+DROP ROLE user_1;

src/test/regress/sql/citus_local_tables_mx.sql

@@ -465,9 +465,19 @@ ALTER TABLE loc_tb ADD CONSTRAINT fkey FOREIGN KEY (a) references ref_tb(a);
 -- drop the view&matview with circular dependency
 DROP VIEW v103 CASCADE;
 
-SET client_min_messages TO DEBUG1;
 -- now it should successfully add to metadata and create the views on workers
 ALTER TABLE loc_tb ADD CONSTRAINT fkey FOREIGN KEY (a) references ref_tb(a);
+-- verify the views are created on workers
+select run_command_on_workers($$SELECT count(*)=0 from citus_local_tables_mx.v100$$);
+select run_command_on_workers($$SELECT count(*)=0 from citus_local_tables_mx.v101$$);
+select run_command_on_workers($$SELECT count(*)=0 from citus_local_tables_mx.v102$$);
+
+CREATE TABLE loc_tb_2 (a int);
+CREATE VIEW v104 AS SELECT * from loc_tb_2;
+
+SET client_min_messages TO DEBUG1;
+-- verify the CREATE command for the view is generated correctly
+ALTER TABLE loc_tb_2 ADD CONSTRAINT fkey_2 FOREIGN KEY (a) references ref_tb(a);
 SET client_min_messages TO WARNING;
 
 -- works fine
@@ -477,8 +487,8 @@ select run_command_on_workers($$SELECT count(*) from citus_local_tables_mx.v100,
 ALTER TABLE loc_tb DROP CONSTRAINT fkey;
 -- fails because fkey is dropped and table is converted to local table
 select run_command_on_workers($$SELECT count(*) from citus_local_tables_mx.v100$$);
-	select run_command_on_workers($$SELECT count(*) from citus_local_tables_mx.v101$$);
+select run_command_on_workers($$SELECT count(*) from citus_local_tables_mx.v101$$);
-	select run_command_on_workers($$SELECT count(*) from citus_local_tables_mx.v102$$);
+select run_command_on_workers($$SELECT count(*) from citus_local_tables_mx.v102$$);
 
 INSERT INTO loc_tb VALUES (1), (2);
 -- test a matview with columnar

src/test/regress/sql/columnar_chunk_filtering.sql

@@ -130,15 +130,11 @@ INSERT INTO another_columnar_table SELECT generate_series(0,5);
 EXPLAIN (analyze on, costs off, timing off, summary off)
   SELECT a, y FROM multi_column_chunk_filtering, another_columnar_table WHERE x > 1;
 
-SELECT plan_without_arrows($Q$
 EXPLAIN (costs off, timing off, summary off)
   SELECT y, * FROM another_columnar_table;
-$Q$);
 
-SELECT plan_without_arrows($Q$
 EXPLAIN (costs off, timing off, summary off)
   SELECT *, x FROM another_columnar_table;
-$Q$);
 
 EXPLAIN (costs off, timing off, summary off)
   SELECT y, another_columnar_table FROM another_columnar_table;

src/test/regress/sql/columnar_citus_integration.sql

@@ -429,13 +429,11 @@ EXPLAIN (COSTS OFF, SUMMARY OFF)
 SELECT * FROM weird_col_explain;
 
 \set VERBOSITY terse
-SELECT public.plan_without_result_lines($Q$
 EXPLAIN (COSTS OFF, SUMMARY OFF)
 SELECT *, "bbbbbbbbbbbbbbbbbbbbbbbbb\!bbbb'bbbbbbbbbbbbbbbbbbbbb''bbbbbbbb"
 FROM weird_col_explain
 WHERE "bbbbbbbbbbbbbbbbbbbbbbbbb\!bbbb'bbbbbbbbbbbbbbbbbbbbb''bbbbbbbb" * 2 >
       "aaaaaaaaaaaa$aaaaaa$$aaaaaaaaaaaaaaaaaaaaaaaaaaaaa'aaaaaaaa'$a'!";
-$Q$);
 \set VERBOSITY default
 
 -- should not project any columns

src/test/regress/sql/insert_select_repartition.sql

@@ -635,9 +635,7 @@ DO UPDATE SET
 create table table_with_sequences (x int, y int, z bigserial);
 insert into table_with_sequences values (1,1);
 select create_distributed_table('table_with_sequences','x');
-SELECT public.plan_without_result_lines($Q$
 explain (costs off) insert into table_with_sequences select y, x from table_with_sequences;
-$Q$);
 
 -- verify that we don't report repartitioned insert/select for tables
 -- with user-defined sequences.
@@ -645,9 +643,7 @@ CREATE SEQUENCE user_defined_sequence;
 create table table_with_user_sequences (x int, y int, z bigint default nextval('user_defined_sequence'));
 insert into table_with_user_sequences values (1,1);
 select create_distributed_table('table_with_user_sequences','x');
-SELECT public.plan_without_result_lines($Q$
 explain (costs off) insert into table_with_user_sequences select y, x from table_with_user_sequences;
-$Q$);
 
 -- clean-up
 SET client_min_messages TO WARNING;

src/test/regress/sql/metadata_sync_helpers.sql

@@ -75,6 +75,13 @@ BEGIN TRANSACTION ISOLATION LEVEL READ COMMITTED;
 	SELECT citus_internal_add_partition_metadata ('test_2'::regclass, 'h', 'col_1', 0, 's');
 ROLLBACK;
 
+-- application_name with suffix is ok (e.g. pgbouncer might add this)
+BEGIN TRANSACTION ISOLATION LEVEL READ COMMITTED;
+	SELECT assign_distributed_transaction_id(0, 8, '2021-07-09 15:41:55.542377+02');
+	SET application_name to 'citus_internal gpid=10000000001 - from 10.12.14.16:10370';
+	SELECT citus_internal_add_partition_metadata ('test_2'::regclass, 'h', 'col_1', 0, 's');
+ROLLBACK;
+
 -- application_name with empty gpid
 BEGIN TRANSACTION ISOLATION LEVEL READ COMMITTED;
 	SELECT assign_distributed_transaction_id(0, 8, '2021-07-09 15:41:55.542377+02');

src/test/regress/sql/multi_replicate_reference_table.sql

@@ -700,6 +700,21 @@ CREATE TABLE test (x int, y int references ref(a));
 SELECT create_distributed_table('test','x');
 END;
 
+-- verify the split fails if we still need to replicate reference tables
+SELECT citus_remove_node('localhost', :worker_2_port);
+SELECT create_distributed_table('test','x');
+SELECT citus_add_node('localhost', :worker_2_port);
+SELECT
+  citus_split_shard_by_split_points(shardid,
+                                    ARRAY[(shardminvalue::int + (shardmaxvalue::int - shardminvalue::int)/2)::text],
+                                    ARRAY[nodeid, nodeid],
+                                    'force_logical')
+FROM
+  pg_dist_shard, pg_dist_node
+WHERE
+  logicalrelid = 'replicate_reference_table.test'::regclass AND nodename = 'localhost' AND nodeport = :worker_2_port
+ORDER BY shardid LIMIT 1;
+
 -- test adding an invalid node while we have reference tables to replicate
 -- set client message level to ERROR and verbosity to terse to supporess
 -- OS-dependent host name resolution warnings

src/test/regress/sql/multi_select_distinct.sql

@@ -3,6 +3,8 @@
 --
 -- Tests select distinct, and select distinct on features.
 --
+SHOW server_version \gset
+SELECT substring(:'server_version', '\d+')::int >= 15 AS server_version_ge_15;
 
 ANALYZE lineitem_hash_part;
 
@@ -113,13 +115,11 @@ EXPLAIN (COSTS FALSE)
 -- check the plan if the hash aggreate is disabled. We expect to see sort+unique
 -- instead of aggregate plan node to handle distinct.
 SET enable_hashagg TO off;
-SELECT public.plan_without_result_lines($Q$
 EXPLAIN (COSTS FALSE)
 	SELECT DISTINCT count(*)
 		FROM lineitem_hash_part
 		GROUP BY l_suppkey, l_linenumber
 		ORDER BY 1;
-$Q$);
 
 SET enable_hashagg TO on;
 
@@ -142,14 +142,12 @@ EXPLAIN (COSTS FALSE)
 -- check the plan if the hash aggreate is disabled. Similar to the explain of
 -- the query above.
 SET enable_hashagg TO off;
-SELECT public.plan_without_result_lines($Q$
 EXPLAIN (COSTS FALSE)
 	SELECT DISTINCT l_suppkey, count(*)
 		FROM lineitem_hash_part
 		GROUP BY l_suppkey, l_linenumber
 		ORDER BY 1
 		LIMIT 10;
-$Q$);
 
 SET enable_hashagg TO on;
 
@@ -173,14 +171,12 @@ EXPLAIN (COSTS FALSE)
 -- check the plan if the hash aggreate is disabled. This explain errors out due
 -- to a bug right now, expectation must be corrected after fixing it.
 SET enable_hashagg TO off;
-SELECT public.plan_without_result_lines($Q$
 EXPLAIN (COSTS FALSE)
 	SELECT DISTINCT l_suppkey, avg(l_partkey)
 		FROM lineitem_hash_part
 		GROUP BY l_suppkey, l_linenumber
 		ORDER BY 1,2
 		LIMIT 10;
-$Q$);
 
 SET enable_hashagg TO on;
 
@@ -203,14 +199,12 @@ EXPLAIN (COSTS FALSE)
 -- check the plan if the hash aggreate is disabled. We expect to see sort+unique to
 -- handle distinct on.
 SET enable_hashagg TO off;
-SELECT public.plan_without_result_lines($Q$
 EXPLAIN (COSTS FALSE)
 	SELECT DISTINCT ON (l_suppkey) avg(l_partkey)
 		FROM lineitem_hash_part
 		GROUP BY l_suppkey, l_linenumber
 		ORDER BY l_suppkey,1
 		LIMIT 10;
-$Q$);
 
 SET enable_hashagg TO on;
 
@@ -232,14 +226,12 @@ EXPLAIN (COSTS FALSE)
 -- check the plan if the hash aggreate is disabled. This explain errors out due
 -- to a bug right now, expectation must be corrected after fixing it.
 SET enable_hashagg TO off;
-SELECT public.plan_without_result_lines($Q$
 EXPLAIN (COSTS FALSE)
 	SELECT DISTINCT avg(ceil(l_partkey / 2))
 		FROM lineitem_hash_part
 		GROUP BY l_suppkey, l_linenumber
 		ORDER BY 1
 		LIMIT 10;
-$Q$);
 
 SET enable_hashagg TO on;
 
@@ -261,14 +253,12 @@ EXPLAIN (COSTS FALSE)
 -- check the plan if the hash aggreate is disabled. This explain errors out due
 -- to a bug right now, expectation must be corrected after fixing it.
 SET enable_hashagg TO off;
-SELECT public.plan_without_result_lines($Q$
 EXPLAIN (COSTS FALSE)
 	SELECT DISTINCT sum(l_suppkey) + count(l_partkey) AS dis
 		FROM lineitem_hash_part
 		GROUP BY l_suppkey, l_linenumber
 		ORDER BY 1
 		LIMIT 10;
-$Q$);
 
 SET enable_hashagg TO on;
 
@@ -345,13 +335,11 @@ EXPLAIN (COSTS FALSE)
 
 -- check the plan if the hash aggreate is disabled
 SET enable_hashagg TO off;
-SELECT public.plan_without_result_lines($Q$
 EXPLAIN (COSTS FALSE)
 	SELECT DISTINCT ceil(count(case when l_partkey > 100000 THEN 1 ELSE 0 END) / 2) AS count
 		FROM lineitem_hash_part
 		GROUP BY l_suppkey
 		ORDER BY 1;
-$Q$);
 
 SET enable_hashagg TO on;
 

src/test/regress/sql/multi_sql_function.sql

@@ -144,6 +144,9 @@ INSERT INTO test_parameterized_sql VALUES(1, 1);
 
 -- all of them should fail
 SELECT * FROM test_parameterized_sql_function(1);
+
+SELECT (SELECT 1 FROM test_parameterized_sql limit 1) FROM test_parameterized_sql_function(1);
+
 SELECT test_parameterized_sql_function_in_subquery_where(1);
 
 -- postgres behaves slightly differently for the following

src/test/regress/sql/multi_test_helpers.sql

@@ -20,15 +20,10 @@ END;
 $$LANGUAGE plpgsql;
 
 -- Create a function to ignore worker plans in explain output
--- Also remove extra "->  Result" lines for PG15 support
 CREATE OR REPLACE FUNCTION coordinator_plan(explain_command text, out query_plan text)
 RETURNS SETOF TEXT AS $$
 BEGIN
   FOR query_plan IN execute explain_command LOOP
-    IF (query_plan LIKE '%->  Result%' OR query_plan = 'Result')
-    THEN
-        CONTINUE;
-    END IF;
     RETURN next;
     IF query_plan LIKE '%Task Count:%'
     THEN
@@ -40,16 +35,12 @@ END; $$ language plpgsql;
 
 -- Create a function to ignore worker plans in explain output
 -- It also shows task count for plan and subplans
--- Also remove extra "->  Result" lines for PG15 support
 CREATE OR REPLACE FUNCTION coordinator_plan_with_subplans(explain_command text, out query_plan text)
 RETURNS SETOF TEXT AS $$
 DECLARE
     task_count_line_reached boolean := false;
 BEGIN
   FOR query_plan IN execute explain_command LOOP
-    IF (query_plan LIKE '%->  Result%' OR query_plan = 'Result') THEN
-        CONTINUE;
-    END IF;
     IF NOT task_count_line_reached THEN
         RETURN next;
     END IF;
@@ -64,20 +55,6 @@ BEGIN
   RETURN;
 END; $$ language plpgsql;
 
--- Create a function to ignore "->  Result" lines for PG15 support
--- In PG15 there are some extra "->  Result" lines
-CREATE OR REPLACE FUNCTION plan_without_result_lines(explain_command text, out query_plan text)
-RETURNS SETOF TEXT AS $$
-BEGIN
-  FOR query_plan IN execute explain_command LOOP
-    IF (query_plan LIKE '%->  Result%' OR query_plan = 'Result') THEN
-        CONTINUE;
-    END IF;
-    RETURN next;
-  END LOOP;
-  RETURN;
-END; $$ language plpgsql;
-
 -- Create a function to normalize Memory Usage, Buckets, Batches
 CREATE OR REPLACE FUNCTION plan_normalize_memory(explain_command text, out query_plan text)
 RETURNS SETOF TEXT AS $$
@@ -88,19 +65,6 @@ BEGIN
   END LOOP;
 END; $$ language plpgsql;
 
--- Create a function to remove arrows from the explain plan
-CREATE OR REPLACE FUNCTION plan_without_arrows(explain_command text, out query_plan text)
-RETURNS SETOF TEXT AS $$
-BEGIN
-  FOR query_plan IN execute explain_command LOOP
-    IF (query_plan LIKE '%->  Result%' OR query_plan = 'Result') THEN
-        CONTINUE;
-    END IF;
-    query_plan := regexp_replace(query_plan, '( )*->  (.*)',  '\2', 'g');
-    RETURN NEXT;
-  END LOOP;
-END; $$ language plpgsql;
-
 -- helper function that returns true if output of given explain has "is not null" (case in-sensitive)
 CREATE OR REPLACE FUNCTION explain_has_is_not_null(explain_command text)
 RETURNS BOOLEAN AS $$

src/test/regress/sql/pg15.sql

@@ -114,6 +114,9 @@ SELECT * FROM sale_triggers ORDER BY 1, 2;
 ALTER TRIGGER "record_sale_trigger" ON "pg15"."sale" RENAME TO "new_record_sale_trigger";
 SELECT * FROM sale_triggers ORDER BY 1, 2;
 
+-- test that we can't rename a distributed clone trigger
+ALTER TRIGGER "new_record_sale_trigger" ON "pg15"."sale_newyork" RENAME TO "another_trigger_name";
+
 --
 -- In PG15, For GENERATED columns, all dependencies of the generation
 -- expression are recorded as NORMAL dependencies of the column itself.
@@ -242,5 +245,15 @@ ON (true)
 WHEN MATCHED THEN
     UPDATE SET x = (SELECT count(*) FROM tbl2);
 
+-- test numeric types with negative scale
+CREATE TABLE numeric_negative_scale(numeric_column numeric(3,-1), orig_value int);
+INSERT into numeric_negative_scale SELECT x,x FROM generate_series(111, 115) x;
+-- verify that we can not distribute by a column that has numeric type with negative scale
+SELECT create_distributed_table('numeric_negative_scale','numeric_column');
+-- However, we can distribute by other columns
+SELECT create_distributed_table('numeric_negative_scale','orig_value');
+
+SELECT * FROM numeric_negative_scale ORDER BY 1,2;
+
 -- Clean up
 DROP SCHEMA pg15 CASCADE;

src/test/regress/sql/upgrade_distributed_triggers_after.sql

@@ -0,0 +1,77 @@
+--
+-- UPGRADE_DISTRIBUTED_TRIGGERS_AFTER
+--
+-- In PG15, Renaming triggers on partitioned tables
+-- recurses to renaming the triggers on the partitions as well.
+-- Relevant PG commit:
+-- 80ba4bb383538a2ee846fece6a7b8da9518b6866
+--
+-- this test is relevant only for pg14-15 upgrade
+--
+
+SHOW server_version \gset
+SELECT substring(:'server_version', '\d+')::int = 15 AS server_version_eq_15
+\gset
+\if :server_version_eq_15
+\else
+\q
+\endif
+
+SET search_path TO upgrade_distributed_triggers, public;
+SET citus.shard_count TO 4;
+
+SET citus.enable_unsafe_triggers TO true;
+SELECT run_command_on_workers('ALTER SYSTEM SET citus.enable_unsafe_triggers TO true;');
+SELECT run_command_on_workers('SELECT pg_reload_conf();');
+
+-- after PG15 upgrade, all child triggers have the same name with the parent triggers
+-- check that the workers are also updated
+SELECT * FROM sale_triggers ORDER BY 1, 2;
+
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'record_sale_trigger%' ORDER BY 1,2;
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'renamed_record_sale_trigger%' ORDER BY 1,2;
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'record_sale_trigger%';$$);
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'renamed_record_sale_trigger%';$$);
+
+-- create another partition to verify that all is safe and sound
+CREATE TABLE sale_alabama PARTITION OF sale FOR VALUES IN ('AL');
+
+SELECT * FROM sale_triggers ORDER BY 1, 2;
+
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'record_sale_trigger%' ORDER BY 1,2;
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'renamed_record_sale_trigger%' ORDER BY 1,2;
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'record_sale_trigger%';$$);
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'renamed_record_sale_trigger%';$$);
+
+-- drop a trigger to verify that all is safe and sound
+DROP TRIGGER another_renamed_trigger ON sale;
+
+SELECT * FROM sale_triggers ORDER BY 1, 2;
+
+-- rename a trigger - note that it also renames the triggers on the partitions
+ALTER TRIGGER "renamed_record_sale_trigger" ON "sale" RENAME TO "final_renamed_record_sale_trigger";
+
+SELECT * FROM sale_triggers ORDER BY 1, 2;
+
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'renamed_record_sale_trigger%' ORDER BY 1,2;
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'final_renamed_record_sale_trigger%' ORDER BY 1,2;
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'renamed_record_sale_trigger%';$$);
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'final_renamed_record_sale_trigger%';$$);
+
+DROP TRIGGER final_renamed_record_sale_trigger ON sale;
+
+-- create another trigger and rename it
+CREATE TRIGGER yet_another_trigger
+AFTER INSERT OR UPDATE OR DELETE ON sale
+FOR EACH ROW EXECUTE FUNCTION upgrade_distributed_triggers.record_sale();
+
+ALTER TRIGGER "yet_another_trigger" ON "sale" RENAME TO "renamed_yet_another_trigger";
+
+SELECT * FROM sale_triggers ORDER BY 1, 2;
+
+-- after upgrade to PG15, test that we can't rename a distributed clone trigger
+ALTER TRIGGER "renamed_yet_another_trigger" ON "sale_alabama" RENAME TO "another_trigger_name";
+SELECT count(*) FROM pg_trigger WHERE tgname like 'another_trigger_name%';
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'another_trigger_name%';$$);
+
+DROP SCHEMA upgrade_distributed_triggers CASCADE;

src/test/regress/sql/upgrade_distributed_triggers_before.sql

@@ -0,0 +1,119 @@
+--
+-- UPGRADE_DISTRIBUTED_TRIGGERS_BEFORE
+--
+-- PRE PG15, Renaming the parent triggers on partitioned tables doesn't
+-- recurse to renaming the child triggers on the partitions as well.
+--
+-- this test is relevant only for pg14-15 upgrade
+--
+
+SHOW server_version \gset
+SELECT substring(:'server_version', '\d+')::int = 14 AS server_version_eq_14
+\gset
+\if :server_version_eq_14
+\else
+\q
+\endif
+
+CREATE SCHEMA upgrade_distributed_triggers;
+SET search_path TO upgrade_distributed_triggers, public;
+SET citus.shard_count TO 4;
+
+SET citus.enable_unsafe_triggers TO true;
+SELECT run_command_on_workers('ALTER SYSTEM SET citus.enable_unsafe_triggers TO true;');
+SELECT run_command_on_workers('SELECT pg_reload_conf();');
+
+CREATE TABLE sale(
+    sale_date date not null,
+    state_code text,
+    product_sku text,
+    units integer)
+    PARTITION BY list (state_code);
+
+ALTER TABLE sale ADD CONSTRAINT sale_pk PRIMARY KEY (state_code, sale_date);
+
+CREATE TABLE sale_newyork PARTITION OF sale FOR VALUES IN ('NY');
+
+CREATE TABLE record_sale(
+    operation_type text not null,
+    product_sku text,
+    state_code text,
+    units integer,
+    PRIMARY KEY(state_code, product_sku, operation_type, units));
+
+SELECT create_distributed_table('sale', 'state_code');
+CREATE TABLE sale_california PARTITION OF sale FOR VALUES IN ('CA');
+SELECT create_distributed_table('record_sale', 'state_code', colocate_with := 'sale');
+
+CREATE OR REPLACE FUNCTION record_sale()
+RETURNS trigger
+AS $$
+BEGIN
+    INSERT INTO upgrade_distributed_triggers.record_sale(operation_type, product_sku, state_code, units)
+    VALUES (TG_OP, NEW.product_sku, NEW.state_code, NEW.units);
+    RETURN NULL;
+END;
+$$ LANGUAGE plpgsql;
+
+-- will rename this trigger
+CREATE TRIGGER record_sale_trigger
+AFTER INSERT OR UPDATE OR DELETE ON sale
+FOR EACH ROW EXECUTE FUNCTION upgrade_distributed_triggers.record_sale();
+
+-- will rename this trigger
+CREATE TRIGGER another_trigger
+AFTER INSERT OR UPDATE OR DELETE ON sale
+FOR EACH ROW EXECUTE FUNCTION upgrade_distributed_triggers.record_sale();
+
+-- won't rename this trigger
+CREATE TRIGGER not_renamed_trigger
+AFTER INSERT OR UPDATE OR DELETE ON sale
+FOR EACH ROW EXECUTE FUNCTION upgrade_distributed_triggers.record_sale();
+
+-- Trigger function should appear on workers
+SELECT proname from pg_proc WHERE oid='upgrade_distributed_triggers.record_sale'::regproc;
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_proc WHERE oid='upgrade_distributed_triggers.record_sale'::regproc$$);
+
+-- Trigger should appear on workers
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'record_sale_trigger%' ORDER BY 1,2;
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'record_sale_trigger%';$$);
+
+CREATE VIEW sale_triggers AS
+    SELECT tgname, tgrelid::regclass, tgenabled
+    FROM pg_trigger
+    WHERE tgrelid::regclass::text like 'sale%'
+    ORDER BY 1, 2;
+
+SELECT * FROM sale_triggers ORDER BY 1, 2;
+
+-- rename the triggers - note that it doesn't rename the
+-- triggers on the partitions
+ALTER TRIGGER record_sale_trigger ON sale RENAME TO renamed_record_sale_trigger;
+
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'record_sale_trigger%' ORDER BY 1,2;
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'renamed_record_sale_trigger%' ORDER BY 1,2;
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'record_sale_trigger%';$$);
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'renamed_record_sale_trigger%';$$);
+
+ALTER TRIGGER another_trigger ON sale RENAME TO another_renamed_trigger;
+SELECT * FROM sale_triggers ORDER BY 1, 2;
+
+-- although the child triggers haven't been renamed to
+-- another_renamed_trigger, they are dropped when the parent is dropped
+DROP TRIGGER another_renamed_trigger ON sale;
+SELECT * FROM sale_triggers ORDER BY 1, 2;
+
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'another_renamed_trigger%' ORDER BY 1,2;
+SELECT tgrelid::regclass::text, tgname FROM pg_trigger WHERE tgname like 'another_trigger%' ORDER BY 1,2;
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'another_renamed_trigger%';$$);
+SELECT run_command_on_workers($$SELECT count(*) FROM pg_trigger WHERE tgname like 'another_trigger%';$$);
+
+CREATE TRIGGER another_trigger
+AFTER INSERT OR UPDATE OR DELETE ON sale
+FOR EACH ROW EXECUTE FUNCTION upgrade_distributed_triggers.record_sale();
+
+ALTER TRIGGER another_trigger ON sale RENAME TO another_renamed_trigger;
+SELECT * FROM sale_triggers ORDER BY 1, 2;
+
+-- check that we can't rename child triggers on partitions of distributed tables
+ALTER TRIGGER another_trigger ON sale_newyork RENAME TO another_renamed_trigger;

src/test/regress/sql/window_functions.sql

@@ -576,11 +576,9 @@ ORDER BY user_id, avg(value_1) DESC
 LIMIT 5;
 
 -- Grouping can be pushed down with aggregates even when window function can't
-SELECT public.plan_without_result_lines($Q$
 EXPLAIN (COSTS FALSE)
 SELECT user_id, count(value_1), stddev(value_1), count(user_id) OVER (PARTITION BY random())
 FROM users_table GROUP BY user_id HAVING avg(value_1) > 2 LIMIT 1;
-$Q$);
 
 -- Window function with inlined CTE
 WITH cte as (