Merge branch 'main' into alter_database_propagation

.circleci/config.yml

@@ -6,7 +6,7 @@ orbs:
 parameters:
   image_suffix:
     type: string
-    default: '-v0c8d80c'
+    default: '-v641cdcd'
   pg14_version:
     type: string
     default: '14.9'
@@ -15,10 +15,10 @@ parameters:
     default: '15.4'
   pg16_version:
     type: string
-    default: '16beta3'
+    default: '16rc1'
   upgrade_pg_versions:
     type: string
-    default: '14.9-15.4-16beta3'
+    default: '14.9-15.4-16rc1'
   style_checker_tools_version:
     type: string
     default: '0.8.18'

src/backend/distributed/commands/alter_table.c

@@ -53,6 +53,7 @@
 #include "distributed/multi_executor.h"
 #include "distributed/multi_logical_planner.h"
 #include "distributed/multi_partitioning_utils.h"
+#include "distributed/namespace_utils.h"
 #include "distributed/reference_table_utils.h"
 #include "distributed/relation_access_tracking.h"
 #include "distributed/replication_origin_session_utils.h"
@@ -1764,10 +1765,7 @@ CreateMaterializedViewDDLCommand(Oid matViewOid)
 	 * Set search_path to NIL so that all objects outside of pg_catalog will be
 	 * schema-prefixed.
 	 */
-	OverrideSearchPath *overridePath = GetOverrideSearchPath(CurrentMemoryContext);
-	overridePath->schemas = NIL;
-	overridePath->addCatalog = true;
-	PushOverrideSearchPath(overridePath);
+	int saveNestLevel = PushEmptySearchPath();
 
 	/*
 	 * Push the transaction snapshot to be able to get vief definition with pg_get_viewdef
@@ -1779,7 +1777,7 @@ CreateMaterializedViewDDLCommand(Oid matViewOid)
 	char *viewDefinition = TextDatumGetCString(viewDefinitionDatum);
 
 	PopActiveSnapshot();
-	PopOverrideSearchPath();
+	PopEmptySearchPath(saveNestLevel);
 
 	appendStringInfo(query, "AS %s", viewDefinition);
 

src/backend/distributed/commands/citus_add_local_table_to_metadata.c

@@ -1478,11 +1478,20 @@ InsertMetadataForCitusLocalTable(Oid citusLocalTableId, uint64 shardId,
 static void
 FinalizeCitusLocalTableCreation(Oid relationId)
 {
+#if PG_VERSION_NUM >= PG_VERSION_16
+
+	/*
+	 * PG16+ supports truncate triggers on foreign tables
+	 */
+	if (RegularTable(relationId) || IsForeignTable(relationId))
+#else
+
 	/*
 	 * If it is a foreign table, then skip creating citus truncate trigger
 	 * as foreign tables do not support truncate triggers.
 	 */
 	if (RegularTable(relationId))
+#endif
 	{
 		CreateTruncateTrigger(relationId);
 	}

src/backend/distributed/commands/create_distributed_table.c

@@ -1256,8 +1256,17 @@ CreateCitusTable(Oid relationId, CitusTableType tableType,
 							  colocationId, citusTableParams.replicationModel,
 							  autoConverted);
 
+#if PG_VERSION_NUM >= PG_VERSION_16
+
+	/*
+	 * PG16+ supports truncate triggers on foreign tables
+	 */
+	if (RegularTable(relationId) || IsForeignTable(relationId))
+#else
+
 	/* foreign tables do not support TRUNCATE trigger */
 	if (RegularTable(relationId))
+#endif
 	{
 		CreateTruncateTrigger(relationId);
 	}
@@ -1659,6 +1668,7 @@ PropagatePrerequisiteObjectsForDistributedTable(Oid relationId)
 	ObjectAddress *tableAddress = palloc0(sizeof(ObjectAddress));
 	ObjectAddressSet(*tableAddress, RelationRelationId, relationId);
 	EnsureAllObjectDependenciesExistOnAllNodes(list_make1(tableAddress));
+	TrackPropagatedTableAndSequences(relationId);
 }
 
 

src/backend/distributed/commands/dependencies.c

@@ -112,6 +112,25 @@ EnsureDependenciesExistOnAllNodes(const ObjectAddress *target)
 						   dependency->objectSubId, ExclusiveLock);
 	}
 
+
+	/*
+	 * We need to propagate dependencies via the current user's metadata connection if
+	 * any dependency for the target is created in the current transaction. Our assumption
+	 * is that if we rely on a dependency created in the current transaction, then the
+	 * current user, most probably, has permissions to create the target object as well.
+	 * Note that, user still may not be able to create the target due to no permissions
+	 * for any of its dependencies. But this is ok since it should be rare.
+	 *
+	 * If we opted to use a separate superuser connection for the target, then we would
+	 * have visibility issues since propagated dependencies would be invisible to
+	 * the separate connection until we locally commit.
+	 */
+	if (HasAnyDependencyInPropagatedObjects(target))
+	{
+		SendCommandListToWorkersWithMetadata(ddlCommands);
+	}
+	else
+	{
 		WorkerNode *workerNode = NULL;
 		foreach_ptr(workerNode, workerNodeList)
 		{
@@ -122,6 +141,7 @@ EnsureDependenciesExistOnAllNodes(const ObjectAddress *target)
 													  CitusExtensionOwnerName(),
 													  ddlCommands);
 		}
+	}
 
 	/*
 	 * We do this after creating the objects on the workers, we make sure

src/backend/distributed/commands/extension.c

@@ -50,7 +50,7 @@ static List * GetAllViews(void);
 static bool ShouldPropagateExtensionCommand(Node *parseTree);
 static bool IsAlterExtensionSetSchemaCitus(Node *parseTree);
 static Node * RecreateExtensionStmt(Oid extensionOid);
-static List * GenerateGrantCommandsOnExtesionDependentFDWs(Oid extensionId);
+static List * GenerateGrantCommandsOnExtensionDependentFDWs(Oid extensionId);
 
 
 /*
@@ -985,7 +985,7 @@ CreateExtensionDDLCommand(const ObjectAddress *extensionAddress)
 
 	/* any privilege granted on FDWs that belong to the extension should be included */
 	List *FDWGrants =
-		GenerateGrantCommandsOnExtesionDependentFDWs(extensionAddress->objectId);
+		GenerateGrantCommandsOnExtensionDependentFDWs(extensionAddress->objectId);
 
 	ddlCommands = list_concat(ddlCommands, FDWGrants);
 
@@ -1048,11 +1048,11 @@ RecreateExtensionStmt(Oid extensionOid)
 
 
 /*
- * GenerateGrantCommandsOnExtesionDependentFDWs returns a list of commands that GRANTs
+ * GenerateGrantCommandsOnExtensionDependentFDWs returns a list of commands that GRANTs
  * the privileges on FDWs that are depending on the given extension.
  */
 static List *
-GenerateGrantCommandsOnExtesionDependentFDWs(Oid extensionId)
+GenerateGrantCommandsOnExtensionDependentFDWs(Oid extensionId)
 {
 	List *commands = NIL;
 	List *FDWOids = GetDependentFDWsToExtension(extensionId);

src/backend/distributed/commands/foreign_constraint.c

@@ -895,7 +895,7 @@ GetForeignConstraintCommandsInternal(Oid relationId, int flags)
 
 	List *foreignKeyCommands = NIL;
 
-	PushOverrideEmptySearchPath(CurrentMemoryContext);
+	int saveNestLevel = PushEmptySearchPath();
 
 	Oid foreignKeyOid = InvalidOid;
 	foreach_oid(foreignKeyOid, foreignKeyOids)
@@ -906,7 +906,7 @@ GetForeignConstraintCommandsInternal(Oid relationId, int flags)
 	}
 
 	/* revert back to original search_path */
-	PopOverrideSearchPath();
+	PopEmptySearchPath(saveNestLevel);
 
 	return foreignKeyCommands;
 }

src/backend/distributed/commands/function.c

@@ -909,15 +909,14 @@ GetFunctionDDLCommand(const RegProcedure funcOid, bool useCreateOrReplace)
 	else
 	{
 		Datum sqlTextDatum = (Datum) 0;
-
-		PushOverrideEmptySearchPath(CurrentMemoryContext);
+		int saveNestLevel = PushEmptySearchPath();
 
 		sqlTextDatum = DirectFunctionCall1(pg_get_functiondef,
 										   ObjectIdGetDatum(funcOid));
 		createFunctionSQL = TextDatumGetCString(sqlTextDatum);
 
 		/* revert back to original search_path */
-		PopOverrideSearchPath();
+		PopEmptySearchPath(saveNestLevel);
 	}
 
 	return createFunctionSQL;

src/backend/distributed/commands/statistics.c

@@ -530,7 +530,7 @@ GetExplicitStatisticsCommandList(Oid relationId)
 	RelationClose(relation);
 
 	/* generate fully-qualified names */
-	PushOverrideEmptySearchPath(CurrentMemoryContext);
+	int saveNestLevel = PushEmptySearchPath();
 
 	Oid statisticsId = InvalidOid;
 	foreach_oid(statisticsId, statisticsIdList)
@@ -579,7 +579,7 @@ GetExplicitStatisticsCommandList(Oid relationId)
 	}
 
 	/* revert back to original search_path */
-	PopOverrideSearchPath();
+	PopEmptySearchPath(saveNestLevel);
 
 	return explicitStatisticsCommandList;
 }

src/backend/distributed/commands/trigger.c

@@ -74,7 +74,7 @@ GetExplicitTriggerCommandList(Oid relationId)
 {
 	List *createTriggerCommandList = NIL;
 
-	PushOverrideEmptySearchPath(CurrentMemoryContext);
+	int saveNestLevel = PushEmptySearchPath();
 
 	List *triggerIdList = GetExplicitTriggerIdList(relationId);
 
@@ -116,7 +116,7 @@ GetExplicitTriggerCommandList(Oid relationId)
 	}
 
 	/* revert back to original search_path */
-	PopOverrideSearchPath();
+	PopEmptySearchPath(saveNestLevel);
 
 	return createTriggerCommandList;
 }

src/backend/distributed/commands/utility_hook.c

@@ -77,6 +77,7 @@
 #include "tcop/utility.h"
 #include "utils/builtins.h"
 #include "utils/fmgroids.h"
+#include "utils/inval.h"
 #include "utils/lsyscache.h"
 #include "utils/syscache.h"
 
@@ -193,6 +194,7 @@ multi_ProcessUtility(PlannedStmt *pstmt,
 
 	bool isCreateAlterExtensionUpdateCitusStmt = IsCreateAlterExtensionUpdateCitusStmt(
 		parsetree);
+
 	if (EnableVersionChecks && isCreateAlterExtensionUpdateCitusStmt)
 	{
 		ErrorIfUnstableCreateOrAlterExtensionStmt(parsetree);
@@ -207,6 +209,18 @@ multi_ProcessUtility(PlannedStmt *pstmt,
 		PreprocessCreateExtensionStmtForCitusColumnar(parsetree);
 	}
 
+	if (isCreateAlterExtensionUpdateCitusStmt || IsDropCitusExtensionStmt(parsetree))
+	{
+		/*
+		 * Citus maintains a higher level cache. We use the cache invalidation mechanism
+		 * of Postgres to achieve cache coherency between backends. Any change to citus
+		 * extension should be made known to other backends. We do this by invalidating the
+		 * relcache and therefore invoking the citus registered callback that invalidates
+		 * the citus cache in other backends.
+		 */
+		CacheInvalidateRelcacheAll();
+	}
+
 	/*
 	 * Make sure that on DROP DATABASE we terminate the background daemon
 	 * associated with it.
@@ -923,18 +937,10 @@ ProcessUtilityInternal(PlannedStmt *pstmt,
 			foreach_ptr(address, addresses)
 			{
 				MarkObjectDistributed(address);
+				TrackPropagatedObject(address);
 			}
 		}
 	}
-
-	if (!IsDropCitusExtensionStmt(parsetree) && !IsA(parsetree, DropdbStmt))
-	{
-		/*
-		 * Ensure value is valid, we can't do some checks during CREATE
-		 * EXTENSION. This is important to register some invalidation callbacks.
-		 */
-		CitusHasBeenLoaded(); /* lgtm[cpp/return-value-ignored] */
-	}
 }
 
 

src/backend/distributed/commands/view.c

@@ -479,10 +479,7 @@ AppendViewDefinitionToCreateViewCommand(StringInfo buf, Oid viewOid)
 	 * Set search_path to NIL so that all objects outside of pg_catalog will be
 	 * schema-prefixed.
 	 */
-	OverrideSearchPath *overridePath = GetOverrideSearchPath(CurrentMemoryContext);
-	overridePath->schemas = NIL;
-	overridePath->addCatalog = true;
-	PushOverrideSearchPath(overridePath);
+	int saveNestLevel = PushEmptySearchPath();
 
 	/*
 	 * Push the transaction snapshot to be able to get vief definition with pg_get_viewdef
@@ -494,7 +491,7 @@ AppendViewDefinitionToCreateViewCommand(StringInfo buf, Oid viewOid)
 	char *viewDefinition = TextDatumGetCString(viewDefinitionDatum);
 
 	PopActiveSnapshot();
-	PopOverrideSearchPath();
+	PopEmptySearchPath(saveNestLevel);
 
 	appendStringInfo(buf, "AS %s ", viewDefinition);
 }

src/backend/distributed/deparser/citus_ruleutils.c

@@ -818,7 +818,7 @@ deparse_shard_index_statement(IndexStmt *origStmt, Oid distrelid, int64 shardid,
 	 * Switch to empty search_path to deparse_index_columns to produce fully-
 	 * qualified names in expressions.
 	 */
-	PushOverrideEmptySearchPath(CurrentMemoryContext);
+	int saveNestLevel = PushEmptySearchPath();
 
 	/* index column or expression list begins here */
 	appendStringInfoChar(buffer, '(');
@@ -855,7 +855,7 @@ deparse_shard_index_statement(IndexStmt *origStmt, Oid distrelid, int64 shardid,
 	}
 
 	/* revert back to original search_path */
-	PopOverrideSearchPath();
+	PopEmptySearchPath(saveNestLevel);
 }
 
 

src/backend/distributed/deparser/deparse_domain_stmts.c

@@ -345,9 +345,9 @@ AppendAlterDomainStmtSetDefault(StringInfo buf, AlterDomainStmt *stmt)
 	expr = TransformDefaultExpr(expr, stmt->typeName, baseTypeName);
 
 	/* deparse while the searchpath is cleared to force qualification of identifiers */
-	PushOverrideEmptySearchPath(CurrentMemoryContext);
+	int saveNestLevel = PushEmptySearchPath();
 	char *exprSql = deparse_expression(expr, NIL, true, true);
-	PopOverrideSearchPath();
+	PopEmptySearchPath(saveNestLevel);
 
 	appendStringInfo(buf, "SET DEFAULT %s", exprSql);
 }
@@ -443,9 +443,9 @@ AppendConstraint(StringInfo buf, Constraint *constraint, List *domainName,
 				elog(ERROR, "missing expression for domain constraint");
 			}
 
-			PushOverrideEmptySearchPath(CurrentMemoryContext);
+			int saveNestLevel = PushEmptySearchPath();
 			char *exprSql = deparse_expression(expr, NIL, true, true);
-			PopOverrideSearchPath();
+			PopEmptySearchPath(saveNestLevel);
 
 			appendStringInfo(buf, " CHECK (%s)", exprSql);
 			return;
@@ -469,9 +469,9 @@ AppendConstraint(StringInfo buf, Constraint *constraint, List *domainName,
 				elog(ERROR, "missing expression for domain default");
 			}
 
-			PushOverrideEmptySearchPath(CurrentMemoryContext);
+			int saveNestLevel = PushEmptySearchPath();
 			char *exprSql = deparse_expression(expr, NIL, true, true);
-			PopOverrideSearchPath();
+			PopEmptySearchPath(saveNestLevel);
 
 			appendStringInfo(buf, " DEFAULT %s", exprSql);
 			return;

src/backend/distributed/deparser/deparse_publication_stmts.c

@@ -307,11 +307,11 @@ AppendWhereClauseExpression(StringInfo buf, RangeVar *tableName,
 
 	List *relationContext = deparse_context_for(tableName->relname, relation->rd_id);
 
-	PushOverrideEmptySearchPath(CurrentMemoryContext);
+	int saveNestLevel = PushEmptySearchPath();
 	char *whereClauseString = deparse_expression(whereClause,
 												 relationContext,
 												 true, true);
-	PopOverrideSearchPath();
+	PopEmptySearchPath(saveNestLevel);
 
 	appendStringInfoString(buf, whereClauseString);
 

src/backend/distributed/deparser/deparse_table_stmts.c

@@ -562,9 +562,9 @@ DeparseRawExprForColumnDefault(Oid relationId, Oid columnTypeId, int32 columnTyp
 
 	List *deparseContext = deparse_context_for(get_rel_name(relationId), relationId);
 
-	PushOverrideEmptySearchPath(CurrentMemoryContext);
+	int saveNestLevel = PushEmptySearchPath();
 	char *defaultExprStr = deparse_expression(defaultExpr, deparseContext, false, false);
-	PopOverrideSearchPath();
+	PopEmptySearchPath(saveNestLevel);
 
 	RelationClose(relation);
 

src/backend/distributed/deparser/ruleutils_14.c

@@ -53,6 +53,7 @@
 #include "common/keywords.h"
 #include "distributed/citus_nodefuncs.h"
 #include "distributed/citus_ruleutils.h"
+#include "distributed/namespace_utils.h"
 #include "executor/spi.h"
 #include "foreign/foreign.h"
 #include "funcapi.h"
@@ -610,18 +611,14 @@ pg_get_rule_expr(Node *expression)
 {
 	bool showImplicitCasts = true;
 	deparse_context context;
-	OverrideSearchPath *overridePath = NULL;
 	StringInfo buffer = makeStringInfo();
 
 	/*
 	 * Set search_path to NIL so that all objects outside of pg_catalog will be
 	 * schema-prefixed. pg_catalog will be added automatically when we call
-	 * PushOverrideSearchPath(), since we set addCatalog to true;
+	 * PushEmptySearchPath().
 	 */
-	overridePath = GetOverrideSearchPath(CurrentMemoryContext);
-	overridePath->schemas = NIL;
-	overridePath->addCatalog = true;
-	PushOverrideSearchPath(overridePath);
+	int saveNestLevel = PushEmptySearchPath();
 
 	context.buf = buffer;
 	context.namespaces = NIL;
@@ -638,7 +635,7 @@ pg_get_rule_expr(Node *expression)
 	get_rule_expr(expression, &context, showImplicitCasts);
 
 	/* revert back to original search_path */
-	PopOverrideSearchPath();
+	PopEmptySearchPath(saveNestLevel);
 
 	return buffer->data;
 }
@@ -1955,8 +1952,6 @@ get_query_def_extended(Query *query, StringInfo buf, List *parentnamespace,
 	deparse_context context;
 	deparse_namespace dpns;
 
-	OverrideSearchPath *overridePath = NULL;
-
 	/* Guard against excessively long or deeply-nested queries */
 	CHECK_FOR_INTERRUPTS();
 	check_stack_depth();
@@ -1975,12 +1970,9 @@ get_query_def_extended(Query *query, StringInfo buf, List *parentnamespace,
 	/*
 	 * Set search_path to NIL so that all objects outside of pg_catalog will be
 	 * schema-prefixed. pg_catalog will be added automatically when we call
-	 * PushOverrideSearchPath(), since we set addCatalog to true;
+	 * PushEmptySearchPath().
 	 */
-	overridePath = GetOverrideSearchPath(CurrentMemoryContext);
-	overridePath->schemas = NIL;
-	overridePath->addCatalog = true;
-	PushOverrideSearchPath(overridePath);
+	int saveNestLevel = PushEmptySearchPath();
 
 	context.buf = buf;
 	context.namespaces = lcons(&dpns, list_copy(parentnamespace));
@@ -2031,7 +2023,7 @@ get_query_def_extended(Query *query, StringInfo buf, List *parentnamespace,
 	}
 
 	/* revert back to original search_path */
-	PopOverrideSearchPath();
+	PopEmptySearchPath(saveNestLevel);
 }
 
 /* ----------

src/backend/distributed/deparser/ruleutils_15.c

@@ -54,6 +54,7 @@
 #include "distributed/citus_nodefuncs.h"
 #include "distributed/citus_ruleutils.h"
 #include "distributed/multi_router_planner.h"
+#include "distributed/namespace_utils.h"
 #include "executor/spi.h"
 #include "foreign/foreign.h"
 #include "funcapi.h"
@@ -624,18 +625,14 @@ pg_get_rule_expr(Node *expression)
 {
 	bool showImplicitCasts = true;
 	deparse_context context;
-	OverrideSearchPath *overridePath = NULL;
 	StringInfo buffer = makeStringInfo();
 
 	/*
 	 * Set search_path to NIL so that all objects outside of pg_catalog will be
 	 * schema-prefixed. pg_catalog will be added automatically when we call
-	 * PushOverrideSearchPath(), since we set addCatalog to true;
+	 * PushEmptySearchPath(), since we set addCatalog to true;
 	 */
-	overridePath = GetOverrideSearchPath(CurrentMemoryContext);
-	overridePath->schemas = NIL;
-	overridePath->addCatalog = true;
-	PushOverrideSearchPath(overridePath);
+	int saveNestLevel = PushEmptySearchPath();
 
 	context.buf = buffer;
 	context.namespaces = NIL;
@@ -652,7 +649,7 @@ pg_get_rule_expr(Node *expression)
 	get_rule_expr(expression, &context, showImplicitCasts);
 
 	/* revert back to original search_path */
-	PopOverrideSearchPath();
+	PopEmptySearchPath(saveNestLevel);
 
 	return buffer->data;
 }
@@ -2038,8 +2035,6 @@ get_query_def_extended(Query *query, StringInfo buf, List *parentnamespace,
 	deparse_context context;
 	deparse_namespace dpns;
 
-	OverrideSearchPath *overridePath = NULL;
-
 	/* Guard against excessively long or deeply-nested queries */
 	CHECK_FOR_INTERRUPTS();
 	check_stack_depth();
@@ -2058,12 +2053,9 @@ get_query_def_extended(Query *query, StringInfo buf, List *parentnamespace,
 	/*
 	 * Set search_path to NIL so that all objects outside of pg_catalog will be
 	 * schema-prefixed. pg_catalog will be added automatically when we call
-	 * PushOverrideSearchPath(), since we set addCatalog to true;
+	 * PushEmptySearchPath().
 	 */
-	overridePath = GetOverrideSearchPath(CurrentMemoryContext);
-	overridePath->schemas = NIL;
-	overridePath->addCatalog = true;
-	PushOverrideSearchPath(overridePath);
+	int saveNestLevel = PushEmptySearchPath();
 
 	context.buf = buf;
 	context.namespaces = lcons(&dpns, list_copy(parentnamespace));
@@ -2118,7 +2110,7 @@ get_query_def_extended(Query *query, StringInfo buf, List *parentnamespace,
 	}
 
 	/* revert back to original search_path */
-	PopOverrideSearchPath();
+	PopEmptySearchPath(saveNestLevel);
 }
 
 /* ----------

src/backend/distributed/deparser/ruleutils_16.c

@@ -54,6 +54,7 @@
 #include "distributed/citus_nodefuncs.h"
 #include "distributed/citus_ruleutils.h"
 #include "distributed/multi_router_planner.h"
+#include "distributed/namespace_utils.h"
 #include "executor/spi.h"
 #include "foreign/foreign.h"
 #include "funcapi.h"
@@ -641,18 +642,14 @@ pg_get_rule_expr(Node *expression)
 {
 	bool showImplicitCasts = true;
 	deparse_context context;
-	OverrideSearchPath *overridePath = NULL;
 	StringInfo buffer = makeStringInfo();
 
 	/*
 	 * Set search_path to NIL so that all objects outside of pg_catalog will be
 	 * schema-prefixed. pg_catalog will be added automatically when we call
-	 * PushOverrideSearchPath(), since we set addCatalog to true;
+	 * PushEmptySearchPath().
 	 */
-	overridePath = GetOverrideSearchPath(CurrentMemoryContext);
-	overridePath->schemas = NIL;
-	overridePath->addCatalog = true;
-	PushOverrideSearchPath(overridePath);
+	int saveNestLevel = PushEmptySearchPath();
 
 	context.buf = buffer;
 	context.namespaces = NIL;
@@ -669,7 +666,7 @@ pg_get_rule_expr(Node *expression)
 	get_rule_expr(expression, &context, showImplicitCasts);
 
 	/* revert back to original search_path */
-	PopOverrideSearchPath();
+	PopEmptySearchPath(saveNestLevel);
 
 	return buffer->data;
 }
@@ -2052,8 +2049,6 @@ get_query_def_extended(Query *query, StringInfo buf, List *parentnamespace,
 	deparse_context context;
 	deparse_namespace dpns;
 
-	OverrideSearchPath *overridePath = NULL;
-
 	/* Guard against excessively long or deeply-nested queries */
 	CHECK_FOR_INTERRUPTS();
 	check_stack_depth();
@@ -2072,12 +2067,9 @@ get_query_def_extended(Query *query, StringInfo buf, List *parentnamespace,
 	/*
 	 * Set search_path to NIL so that all objects outside of pg_catalog will be
 	 * schema-prefixed. pg_catalog will be added automatically when we call
-	 * PushOverrideSearchPath(), since we set addCatalog to true;
+	 * PushEmptySearchPath().
 	 */
-	overridePath = GetOverrideSearchPath(CurrentMemoryContext);
-	overridePath->schemas = NIL;
-	overridePath->addCatalog = true;
-	PushOverrideSearchPath(overridePath);
+	int saveNestLevel = PushEmptySearchPath();
 
 	context.buf = buf;
 	context.namespaces = lcons(&dpns, list_copy(parentnamespace));
@@ -2132,7 +2124,7 @@ get_query_def_extended(Query *query, StringInfo buf, List *parentnamespace,
 	}
 
 	/* revert back to original search_path */
-	PopOverrideSearchPath();
+	PopEmptySearchPath(saveNestLevel);
 }
 
 /* ----------

src/backend/distributed/metadata/metadata_cache.c

@@ -133,6 +133,19 @@ typedef struct ShardIdCacheEntry
 	int shardIndex;
 } ShardIdCacheEntry;
 
+/*
+ * ExtensionCreatedState is used to track if citus extension has been created
+ * using CREATE EXTENSION command.
+ *  UNKNOWN     : MetadataCache is invalid. State is UNKNOWN.
+ *  CREATED     : Citus is created.
+ *  NOTCREATED	: Citus is not created.
+ */
+typedef enum ExtensionCreatedState
+{
+	UNKNOWN = 0,
+	CREATED = 1,
+	NOTCREATED = 2,
+} ExtensionCreatedState;
 
 /*
  * State which should be cleared upon DROP EXTENSION. When the configuration
@@ -140,7 +153,7 @@ typedef struct ShardIdCacheEntry
  */
 typedef struct MetadataCacheData
 {
-	bool extensionLoaded;
+	ExtensionCreatedState extensionCreatedState;
 	Oid distShardRelationId;
 	Oid distPlacementRelationId;
 	Oid distBackgroundJobRelationId;
@@ -288,7 +301,6 @@ static void CreateDistTableCache(void);
 static void CreateShardIdCache(void);
 static void CreateDistObjectCache(void);
 static void InvalidateForeignRelationGraphCacheCallback(Datum argument, Oid relationId);
-static void InvalidateDistRelationCacheCallback(Datum argument, Oid relationId);
 static void InvalidateNodeRelationCacheCallback(Datum argument, Oid relationId);
 static void InvalidateLocalGroupIdRelationCacheCallback(Datum argument, Oid relationId);
 static void InvalidateConnParamsCacheCallback(Datum argument, Oid relationId);
@@ -2186,17 +2198,31 @@ HasOverlappingShardInterval(ShardInterval **shardIntervalArray,
  */
 bool
 CitusHasBeenLoaded(void)
-{
-	if (!MetadataCache.extensionLoaded || creating_extension)
 {
 	/*
-		 * Refresh if we have not determined whether the extension has been
-		 * loaded yet, or in case of ALTER EXTENSION since we want to treat
-		 * Citus as "not loaded" during ALTER EXTENSION citus.
+	 * We do not use Citus hooks during CREATE/ALTER EXTENSION citus
+	 * since the objects used by the C code might be not be there yet.
 	 */
-		bool extensionLoaded = CitusHasBeenLoadedInternal();
+	if (creating_extension)
+	{
+		Oid citusExtensionOid = get_extension_oid("citus", true);
 
-		if (extensionLoaded && !MetadataCache.extensionLoaded)
+		if (CurrentExtensionObject == citusExtensionOid)
+		{
+			return false;
+		}
+	}
+
+	/*
+	 * If extensionCreatedState is UNKNOWN, query pg_extension for Citus
+	 * and cache the result. Otherwise return the value extensionCreatedState
+	 * indicates.
+	 */
+	if (MetadataCache.extensionCreatedState == UNKNOWN)
+	{
+		bool extensionCreated = CitusHasBeenLoadedInternal();
+
+		if (extensionCreated)
 		{
 			/*
 			 * Loaded Citus for the first time in this session, or first time after
@@ -2208,31 +2234,22 @@ CitusHasBeenLoaded(void)
 			 */
 			StartupCitusBackend();
 
-			/*
-			 * InvalidateDistRelationCacheCallback resets state such as extensionLoaded
-			 * when it notices changes to pg_dist_partition (which usually indicate
-			 * `DROP EXTENSION citus;` has been run)
-			 *
-			 * Ensure InvalidateDistRelationCacheCallback will notice those changes
-			 * by caching pg_dist_partition's oid.
-			 *
-			 * We skip these checks during upgrade since pg_dist_partition is not
-			 * present during early stages of upgrade operation.
-			 */
-			DistPartitionRelationId();
-
 			/*
 			 * This needs to be initialized so we can receive foreign relation graph
 			 * invalidation messages in InvalidateForeignRelationGraphCacheCallback().
 			 * See the comments of InvalidateForeignKeyGraph for more context.
 			 */
 			DistColocationRelationId();
+
+			MetadataCache.extensionCreatedState = CREATED;
+		}
+		else
+		{
+			MetadataCache.extensionCreatedState = NOTCREATED;
+		}
 	}
 
-		MetadataCache.extensionLoaded = extensionLoaded;
-	}
-
-	return MetadataCache.extensionLoaded;
+	return (MetadataCache.extensionCreatedState == CREATED) ? true : false;
 }
 
 
@@ -2257,15 +2274,6 @@ CitusHasBeenLoadedInternal(void)
 		return false;
 	}
 
-	if (creating_extension && CurrentExtensionObject == citusExtensionOid)
-	{
-		/*
-		 * We do not use Citus hooks during CREATE/ALTER EXTENSION citus
-		 * since the objects used by the C code might be not be there yet.
-		 */
-		return false;
-	}
-
 	/* citus extension exists and has been created */
 	return true;
 }
@@ -4201,10 +4209,6 @@ InitializeDistCache(void)
 	CreateShardIdCache();
 
 	InitializeDistObjectCache();
-
-	/* Watch for invalidation events. */
-	CacheRegisterRelcacheCallback(InvalidateDistRelationCacheCallback,
-								  (Datum) 0);
 }
 
 
@@ -4754,7 +4758,7 @@ InvalidateForeignKeyGraph(void)
  * InvalidateDistRelationCacheCallback flushes cache entries when a relation
  * is updated (or flushes the entire cache).
  */
-static void
+void
 InvalidateDistRelationCacheCallback(Datum argument, Oid relationId)
 {
 	/* invalidate either entire cache or a specific entry */
@@ -4762,12 +4766,18 @@ InvalidateDistRelationCacheCallback(Datum argument, Oid relationId)
 	{
 		InvalidateDistTableCache();
 		InvalidateDistObjectCache();
+		InvalidateMetadataSystemCache();
 	}
 	else
 	{
 		void *hashKey = (void *) &relationId;
 		bool foundInCache = false;
 
+		if (DistTableCacheHash == NULL)
+		{
+			return;
+		}
+
 		CitusTableCacheEntrySlot *cacheSlot =
 			hash_search(DistTableCacheHash, hashKey, HASH_FIND, &foundInCache);
 		if (foundInCache)
@@ -4776,21 +4786,19 @@ InvalidateDistRelationCacheCallback(Datum argument, Oid relationId)
 		}
 
 		/*
-		 * If pg_dist_partition is being invalidated drop all state
-		 * This happens pretty rarely, but most importantly happens during
-		 * DROP EXTENSION citus; This isn't the only time when this happens
-		 * though, it can happen for multiple other reasons, such as an
-		 * autovacuum running ANALYZE on pg_dist_partition. Such an ANALYZE
-		 * wouldn't really need a full Metadata cache invalidation, but we
-		 * don't know how to differentiate between DROP EXTENSION and ANALYZE.
-		 * So for now we simply drop it in both cases and take the slight
-		 * temporary performance hit.
+		 * if pg_dist_partition relcache is invalidated for some reason,
+		 * invalidate the MetadataCache. It is likely an overkill to invalidate
+		 * the entire cache here. But until a better fix, we keep it this way
+		 * for postgres regression tests that includes
+		 *   REINDEX SCHEMA CONCURRENTLY pg_catalog
+		 * command.
 		 */
 		if (relationId == MetadataCache.distPartitionRelationId)
 		{
 			InvalidateMetadataSystemCache();
 		}
 
+
 		if (relationId == MetadataCache.distObjectRelationId)
 		{
 			InvalidateDistObjectCache();
@@ -4830,6 +4838,11 @@ InvalidateDistTableCache(void)
 	CitusTableCacheEntrySlot *cacheSlot = NULL;
 	HASH_SEQ_STATUS status;
 
+	if (DistTableCacheHash == NULL)
+	{
+		return;
+	}
+
 	hash_seq_init(&status, DistTableCacheHash);
 
 	while ((cacheSlot = (CitusTableCacheEntrySlot *) hash_seq_search(&status)) != NULL)
@@ -4848,6 +4861,11 @@ InvalidateDistObjectCache(void)
 	DistObjectCacheEntry *cacheEntry = NULL;
 	HASH_SEQ_STATUS status;
 
+	if (DistObjectCacheHash == NULL)
+	{
+		return;
+	}
+
 	hash_seq_init(&status, DistObjectCacheHash);
 
 	while ((cacheEntry = (DistObjectCacheEntry *) hash_seq_search(&status)) != NULL)
@@ -4930,8 +4948,8 @@ CreateDistObjectCache(void)
 
 
 /*
- * InvalidateMetadataSystemCache resets all the cached OIDs and the extensionLoaded flag,
- * and invalidates the worker node, ConnParams, and local group ID caches.
+ * InvalidateMetadataSystemCache resets all the cached OIDs and the extensionCreatedState
+ * flag and invalidates the worker node, ConnParams, and local group ID caches.
  */
 void
 InvalidateMetadataSystemCache(void)

src/backend/distributed/operations/node_protocol.c

@@ -612,7 +612,7 @@ GetPreLoadTableCreationCommands(Oid relationId,
 {
 	List *tableDDLEventList = NIL;
 
-	PushOverrideEmptySearchPath(CurrentMemoryContext);
+	int saveNestLevel = PushEmptySearchPath();
 
 	/* fetch table schema and column option definitions */
 	char *tableSchemaDef = pg_get_tableschemadef_string(relationId,
@@ -665,7 +665,7 @@ GetPreLoadTableCreationCommands(Oid relationId,
 	tableDDLEventList = list_concat(tableDDLEventList, policyCommands);
 
 	/* revert back to original search_path */
-	PopOverrideSearchPath();
+	PopEmptySearchPath(saveNestLevel);
 
 	return tableDDLEventList;
 }
@@ -754,7 +754,7 @@ GatherIndexAndConstraintDefinitionList(Form_pg_index indexForm, List **indexDDLE
 									   int indexFlags)
 {
 	/* generate fully-qualified names */
-	PushOverrideEmptySearchPath(CurrentMemoryContext);
+	int saveNestLevel = PushEmptySearchPath();
 
 	Oid indexId = indexForm->indexrelid;
 	bool indexImpliedByConstraint = IndexImpliedByAConstraint(indexForm);
@@ -805,7 +805,7 @@ GatherIndexAndConstraintDefinitionList(Form_pg_index indexForm, List **indexDDLE
 	}
 
 	/* revert back to original search_path */
-	PopOverrideSearchPath();
+	PopEmptySearchPath(saveNestLevel);
 }
 
 

src/backend/distributed/operations/replicate_none_dist_table_shard.c

@@ -158,7 +158,7 @@ NoneDistTableDropCoordinatorPlacementTable(Oid noneDistTableId)
 	 * local session because changes made to shards are allowed for Citus internal
 	 * backends anyway.
 	 */
-	int save_nestlevel = NewGUCNestLevel();
+	int saveNestLevel = NewGUCNestLevel();
 
 	SetLocalEnableLocalReferenceForeignKeys(false);
 	SetLocalEnableManualChangesToShard(true);
@@ -184,7 +184,7 @@ NoneDistTableDropCoordinatorPlacementTable(Oid noneDistTableId)
 	bool localExecutionSupported = true;
 	ExecuteUtilityTaskList(list_make1(task), localExecutionSupported);
 
-	AtEOXact_GUC(true, save_nestlevel);
+	AtEOXact_GUC(true, saveNestLevel);
 }
 
 

src/backend/distributed/shared_library_init.c

@@ -109,6 +109,8 @@
 #include "tcop/tcopprot.h"
 #include "utils/guc.h"
 #include "utils/guc_tables.h"
+#include "utils/inval.h"
+#include "utils/lsyscache.h"
 #include "utils/syscache.h"
 #include "utils/varlena.h"
 
@@ -554,6 +556,9 @@ _PG_init(void)
 															"ColumnarSupportsIndexAM",
 															true, &handle);
 
+	CacheRegisterRelcacheCallback(InvalidateDistRelationCacheCallback,
+								  (Datum) 0);
+
 	INIT_COLUMNAR_SYMBOL(CompressionTypeStr_type, CompressionTypeStr);
 	INIT_COLUMNAR_SYMBOL(IsColumnarTableAmTable_type, IsColumnarTableAmTable);
 	INIT_COLUMNAR_SYMBOL(ReadColumnarOptions_type, ReadColumnarOptions);

src/backend/distributed/transaction/transaction_management.c

@@ -19,6 +19,8 @@
 
 #include "access/twophase.h"
 #include "access/xact.h"
+#include "catalog/dependency.h"
+#include "common/hashfn.h"
 #include "distributed/backend_data.h"
 #include "distributed/citus_safe_lib.h"
 #include "distributed/connection_management.h"
@@ -30,6 +32,7 @@
 #include "distributed/local_executor.h"
 #include "distributed/locally_reserved_shared_connections.h"
 #include "distributed/maintenanced.h"
+#include "distributed/metadata/dependency.h"
 #include "distributed/multi_executor.h"
 #include "distributed/multi_logical_replication.h"
 #include "distributed/multi_explain.h"
@@ -89,14 +92,25 @@ StringInfo activeSetStmts;
  * Though a list, we treat this as a stack, pushing on subxact contexts whenever
  * e.g. a SAVEPOINT is executed (though this is actually performed by providing
  * PostgreSQL with a sub-xact callback). At present, the context of a subxact
- * includes a subxact identifier as well as any SET LOCAL statements propagated
- * to workers during the sub-transaction.
+ * includes
+ *  - a subxact identifier,
+ *  - any SET LOCAL statements propagated to workers during the sub-transaction,
+ *  - all objects propagated to workers during the sub-transaction.
  *
  * To be clear, last item of activeSubXactContexts list corresponds to top of
  * stack.
  */
 static List *activeSubXactContexts = NIL;
 
+/*
+ * PropagatedObjectsInTx is a set of objects propagated in the root transaction.
+ * We also keep track of objects propagated in sub-transactions in activeSubXactContexts.
+ * Any committed sub-transaction would cause the objects, which are propagated during
+ * the sub-transaction, to be moved to upper transaction's set. Objects are discarded
+ * when the sub-transaction is aborted.
+ */
+static HTAB *PropagatedObjectsInTx = NULL;
+
 /* some pre-allocated memory so we don't need to call malloc() during callbacks */
 MemoryContext CitusXactCallbackContext = NULL;
 
@@ -142,11 +156,17 @@ static void CoordinatedSubTransactionCallback(SubXactEvent event, SubTransaction
 /* remaining functions */
 static void AdjustMaxPreparedTransactions(void);
 static void PushSubXact(SubTransactionId subId);
-static void PopSubXact(SubTransactionId subId);
+static void PopSubXact(SubTransactionId subId, bool commit);
 static void ResetGlobalVariables(void);
 static bool SwallowErrors(void (*func)(void));
 static void ForceAllInProgressConnectionsToClose(void);
 static void EnsurePrepareTransactionIsAllowed(void);
+static HTAB * CurrentTransactionPropagatedObjects(bool readonly);
+static HTAB * ParentTransactionPropagatedObjects(bool readonly);
+static void MovePropagatedObjectsToParentTransaction(void);
+static bool DependencyInPropagatedObjectsHash(HTAB *propagatedObjects,
+											  const ObjectAddress *dependency);
+static HTAB * CreateTxPropagatedObjectsHash(void);
 
 
 /*
@@ -321,6 +341,7 @@ CoordinatedTransactionCallback(XactEvent event, void *arg)
 
 			ResetGlobalVariables();
 			ResetRelationAccessHash();
+			ResetPropagatedObjects();
 
 			/*
 			 * Make sure that we give the shared connections back to the shared
@@ -391,6 +412,7 @@ CoordinatedTransactionCallback(XactEvent event, void *arg)
 
 			ResetGlobalVariables();
 			ResetRelationAccessHash();
+			ResetPropagatedObjects();
 
 			/* Reset any local replication origin session since transaction has been aborted.*/
 			ResetReplicationOriginLocalSession();
@@ -638,7 +660,7 @@ CoordinatedSubTransactionCallback(SubXactEvent event, SubTransactionId subId,
 	switch (event)
 	{
 		/*
-		 * Our subtransaction stack should be consistent with postgres' internal
+		 * Our sub-transaction stack should be consistent with postgres' internal
 		 * transaction stack. In case of subxact begin, postgres calls our
 		 * callback after it has pushed the transaction into stack, so we have to
 		 * do the same even if worker commands fail, so we PushSubXact() first.
@@ -672,7 +694,7 @@ CoordinatedSubTransactionCallback(SubXactEvent event, SubTransactionId subId,
 			{
 				CoordinatedRemoteTransactionsSavepointRelease(subId);
 			}
-			PopSubXact(subId);
+			PopSubXact(subId, true);
 
 			/* Set CachedDuringCitusCreation to one level lower to represent citus creation is done */
 
@@ -706,7 +728,7 @@ CoordinatedSubTransactionCallback(SubXactEvent event, SubTransactionId subId,
 			{
 				CoordinatedRemoteTransactionsSavepointRollback(subId);
 			}
-			PopSubXact(subId);
+			PopSubXact(subId, false);
 
 			/*
 			 * Clear MetadataCache table if we're aborting from a CREATE EXTENSION Citus
@@ -775,6 +797,9 @@ PushSubXact(SubTransactionId subId)
 	state->subId = subId;
 	state->setLocalCmds = activeSetStmts;
 
+	/* we lazily create hashset when any object is propagated during sub-transaction */
+	state->propagatedObjects = NULL;
+
 	/* append to list and reset active set stmts for upcoming sub-xact */
 	activeSubXactContexts = lappend(activeSubXactContexts, state);
 	activeSetStmts = makeStringInfo();
@@ -783,7 +808,7 @@ PushSubXact(SubTransactionId subId)
 
 /* PopSubXact pops subId from the stack of active sub-transactions. */
 static void
-PopSubXact(SubTransactionId subId)
+PopSubXact(SubTransactionId subId, bool commit)
 {
 	SubXactContext *state = llast(activeSubXactContexts);
 
@@ -806,6 +831,16 @@ PopSubXact(SubTransactionId subId)
 	 */
 	activeSetStmts = state->setLocalCmds;
 
+	/*
+	 * Keep subtransaction's propagated objects at parent transaction
+	 * if subtransaction committed. Otherwise, discard them.
+	 */
+	if (commit)
+	{
+		MovePropagatedObjectsToParentTransaction();
+	}
+	hash_destroy(state->propagatedObjects);
+
 	/*
 	 * Free state to avoid memory leaks when we create subxacts for each row,
 	 * e.g. in exception handling of UDFs.
@@ -913,3 +948,227 @@ EnsurePrepareTransactionIsAllowed(void)
 					errmsg("cannot use 2PC in transactions involving "
 						   "multiple servers")));
 }
+
+
+/*
+ * CurrentTransactionPropagatedObjects returns the objects propagated in current
+ * sub-transaction or the root transaction if no sub-transaction exists.
+ *
+ * If the propagated objects are readonly it will not create the hashmap if it does not
+ * already exist in the current sub-transaction.
+ */
+static HTAB *
+CurrentTransactionPropagatedObjects(bool readonly)
+{
+	if (activeSubXactContexts == NIL)
+	{
+		/* hashset in the root transaction if there is no sub-transaction */
+		if (PropagatedObjectsInTx == NULL && !readonly)
+		{
+			/* lazily create hashset for root transaction, for mutating uses */
+			PropagatedObjectsInTx = CreateTxPropagatedObjectsHash();
+		}
+		return PropagatedObjectsInTx;
+	}
+
+	/* hashset in top level sub-transaction */
+	SubXactContext *state = llast(activeSubXactContexts);
+	if (state->propagatedObjects == NULL && !readonly)
+	{
+		/* lazily create hashset for sub-transaction, for mutating uses */
+		state->propagatedObjects = CreateTxPropagatedObjectsHash();
+	}
+	return state->propagatedObjects;
+}
+
+
+/*
+ * ParentTransactionPropagatedObjects returns the objects propagated in parent
+ * transaction of active sub-transaction. It returns the root transaction if
+ * no sub-transaction exists.
+ *
+ * If the propagated objects are readonly it will not create the hashmap if it does not
+ * already exist in the target sub-transaction.
+ */
+static HTAB *
+ParentTransactionPropagatedObjects(bool readonly)
+{
+	int nestingLevel = list_length(activeSubXactContexts);
+	if (nestingLevel <= 1)
+	{
+		/*
+		 * The parent is the root transaction, when there is single level sub-transaction
+		 * or no sub-transaction.
+		 */
+		if (PropagatedObjectsInTx == NULL && !readonly)
+		{
+			/* lazily create hashset for root transaction, for mutating uses */
+			PropagatedObjectsInTx = CreateTxPropagatedObjectsHash();
+		}
+		return PropagatedObjectsInTx;
+	}
+
+	/* parent is upper sub-transaction */
+	Assert(nestingLevel >= 2);
+	SubXactContext *state = list_nth(activeSubXactContexts, nestingLevel - 2);
+	if (state->propagatedObjects == NULL && !readonly)
+	{
+		/* lazily create hashset for parent sub-transaction */
+		state->propagatedObjects = CreateTxPropagatedObjectsHash();
+	}
+	return state->propagatedObjects;
+}
+
+
+/*
+ * MovePropagatedObjectsToParentTransaction moves all objects propagated in the current
+ * sub-transaction to the parent transaction. This should only be called when there is
+ * active sub-transaction.
+ */
+static void
+MovePropagatedObjectsToParentTransaction(void)
+{
+	Assert(llast(activeSubXactContexts) != NULL);
+	HTAB *currentPropagatedObjects = CurrentTransactionPropagatedObjects(true);
+	if (currentPropagatedObjects == NULL)
+	{
+		/* nothing to move */
+		return;
+	}
+
+	/*
+	 * Only after we know we have objects to move into the parent do we get a handle on
+	 * a guaranteed existing parent hash table. This makes sure that the parents only
+	 * get populated once there are objects to be tracked.
+	 */
+	HTAB *parentPropagatedObjects = ParentTransactionPropagatedObjects(false);
+
+	HASH_SEQ_STATUS propagatedObjectsSeq;
+	hash_seq_init(&propagatedObjectsSeq, currentPropagatedObjects);
+	ObjectAddress *objectAddress = NULL;
+	while ((objectAddress = hash_seq_search(&propagatedObjectsSeq)) != NULL)
+	{
+		hash_search(parentPropagatedObjects, objectAddress, HASH_ENTER, NULL);
+	}
+}
+
+
+/*
+ * DependencyInPropagatedObjectsHash checks if dependency is in given hashset
+ * of propagated objects.
+ */
+static bool
+DependencyInPropagatedObjectsHash(HTAB *propagatedObjects, const
+								  ObjectAddress *dependency)
+{
+	if (propagatedObjects == NULL)
+	{
+		return false;
+	}
+
+	bool found = false;
+	hash_search(propagatedObjects, dependency, HASH_FIND, &found);
+	return found;
+}
+
+
+/*
+ * CreateTxPropagatedObjectsHash creates a hashset to keep track of the objects
+ * propagated in the current root transaction or sub-transaction.
+ */
+static HTAB *
+CreateTxPropagatedObjectsHash(void)
+{
+	HASHCTL info;
+	memset(&info, 0, sizeof(info));
+	info.keysize = sizeof(ObjectAddress);
+	info.entrysize = sizeof(ObjectAddress);
+	info.hash = tag_hash;
+	info.hcxt = CitusXactCallbackContext;
+
+	int hashFlags = (HASH_ELEM | HASH_CONTEXT | HASH_FUNCTION);
+	return hash_create("Tx Propagated Objects", 16, &info, hashFlags);
+}
+
+
+/*
+ * TrackPropagatedObject adds given object into the objects propagated in the current
+ * sub-transaction.
+ */
+void
+TrackPropagatedObject(const ObjectAddress *objectAddress)
+{
+	HTAB *currentPropagatedObjects = CurrentTransactionPropagatedObjects(false);
+	hash_search(currentPropagatedObjects, objectAddress, HASH_ENTER, NULL);
+}
+
+
+/*
+ * TrackPropagatedTableAndSequences adds given table and its sequences to the objects
+ * propagated in the current sub-transaction.
+ */
+void
+TrackPropagatedTableAndSequences(Oid relationId)
+{
+	/* track table */
+	ObjectAddress *tableAddress = palloc0(sizeof(ObjectAddress));
+	ObjectAddressSet(*tableAddress, RelationRelationId, relationId);
+	TrackPropagatedObject(tableAddress);
+
+	/* track its sequences */
+	List *ownedSeqIdList = getOwnedSequences(relationId);
+	Oid ownedSeqId = InvalidOid;
+	foreach_oid(ownedSeqId, ownedSeqIdList)
+	{
+		ObjectAddress *seqAddress = palloc0(sizeof(ObjectAddress));
+		ObjectAddressSet(*seqAddress, RelationRelationId, ownedSeqId);
+		TrackPropagatedObject(seqAddress);
+	}
+}
+
+
+/*
+ * ResetPropagatedObjects destroys hashset of propagated objects in the root transaction.
+ */
+void
+ResetPropagatedObjects(void)
+{
+	hash_destroy(PropagatedObjectsInTx);
+	PropagatedObjectsInTx = NULL;
+}
+
+
+/*
+ * HasAnyDependencyInPropagatedObjects decides if any dependency of given object is
+ * propagated in the current transaction.
+ */
+bool
+HasAnyDependencyInPropagatedObjects(const ObjectAddress *objectAddress)
+{
+	List *dependencyList = GetAllSupportedDependenciesForObject(objectAddress);
+	ObjectAddress *dependency = NULL;
+	foreach_ptr(dependency, dependencyList)
+	{
+		/* first search in root transaction */
+		if (DependencyInPropagatedObjectsHash(PropagatedObjectsInTx, dependency))
+		{
+			return true;
+		}
+
+		/* search in all nested sub-transactions */
+		if (activeSubXactContexts == NIL)
+		{
+			continue;
+		}
+		SubXactContext *state = NULL;
+		foreach_ptr(state, activeSubXactContexts)
+		{
+			if (DependencyInPropagatedObjectsHash(state->propagatedObjects, dependency))
+			{
+				return true;
+			}
+		}
+	}
+
+	return false;
+}

src/backend/distributed/transaction/worker_transaction.c

@@ -135,6 +135,21 @@ SendCommandToWorkersWithMetadataViaSuperUser(const char *command)
 }
 
 
+/*
+ * SendCommandListToWorkersWithMetadata sends all commands to all metadata workers
+ * with the current user. See `SendCommandToWorkersWithMetadata`for details.
+ */
+void
+SendCommandListToWorkersWithMetadata(List *commands)
+{
+	char *command = NULL;
+	foreach_ptr(command, commands)
+	{
+		SendCommandToWorkersWithMetadata(command);
+	}
+}
+
+
 /*
  * TargetWorkerSetNodeList returns a list of WorkerNode's that satisfies the
  * TargetWorkerSet.

src/backend/distributed/utils/colocation_utils.c

@@ -175,12 +175,11 @@ BreakColocation(Oid sourceRelationId)
 	 */
 	Relation pgDistColocation = table_open(DistColocationRelationId(), ExclusiveLock);
 
-	uint32 newColocationId = GetNextColocationId();
-	bool localOnly = false;
-	UpdateRelationColocationGroup(sourceRelationId, newColocationId, localOnly);
+	uint32 oldColocationId = TableColocationId(sourceRelationId);
+	CreateColocationGroupForRelation(sourceRelationId);
 
-	/* if there is not any remaining table in the colocation group, delete it */
-	DeleteColocationGroupIfNoTablesBelong(sourceRelationId);
+	/* if there is not any remaining table in the old colocation group, delete it */
+	DeleteColocationGroupIfNoTablesBelong(oldColocationId);
 
 	table_close(pgDistColocation, NoLock);
 }

src/backend/distributed/utils/namespace_utils.c

@@ -11,22 +11,33 @@
 
 #include "postgres.h"
 
-#include "catalog/namespace.h"
-#include "distributed/citus_ruleutils.h"
 #include "distributed/namespace_utils.h"
+#include "utils/guc.h"
 #include "utils/regproc.h"
 
 /*
- * PushOverrideEmptySearchPath pushes search_path to be NIL and sets addCatalog to
- * true so that all objects outside of pg_catalog will be schema-prefixed.
- * Afterwards, PopOverrideSearchPath can be used to revert the search_path back.
+ * We use the equivalent of a function SET option to allow the setting to
+ * persist for the exact duration of the transaction, guc.c takes care of
+ * undoing the setting on error.
+ *
+ * We set search_path to "pg_catalog" instead of "" to expose useful utilities.
+ */
+int
+PushEmptySearchPath()
+{
+	int saveNestLevel = NewGUCNestLevel();
+	(void) set_config_option("search_path", "pg_catalog",
+							 PGC_USERSET, PGC_S_SESSION,
+							 GUC_ACTION_SAVE, true, 0, false);
+	return saveNestLevel;
+}
+
+
+/*
+ * Restore the GUC variable search_path we set in PushEmptySearchPath
  */
 void
-PushOverrideEmptySearchPath(MemoryContext memoryContext)
+PopEmptySearchPath(int saveNestLevel)
 {
-	OverrideSearchPath *overridePath = GetOverrideSearchPath(memoryContext);
-	overridePath->schemas = NIL;
-	overridePath->addCatalog = true;
-
-	PushOverrideSearchPath(overridePath);
+	AtEOXact_GUC(true, saveNestLevel);
 }

src/include/distributed/metadata_cache.h

@@ -137,6 +137,8 @@ typedef enum
 	ANY_CITUS_TABLE_TYPE
 } CitusTableType;
 
+void InvalidateDistRelationCacheCallback(Datum argument, Oid relationId);
+
 extern List * AllCitusTableIds(void);
 extern bool IsCitusTableType(Oid relationId, CitusTableType tableType);
 extern CitusTableType GetCitusTableType(CitusTableCacheEntry *tableEntry);

src/include/distributed/namespace_utils.h

@@ -10,6 +10,7 @@
 #ifndef NAMESPACE_UTILS_H
 #define NAMESPACE_UTILS_H
 
-extern void PushOverrideEmptySearchPath(MemoryContext memoryContext);
+extern int PushEmptySearchPath(void);
+extern void PopEmptySearchPath(int saveNestLevel);
 
 #endif /* NAMESPACE_UTILS_H */

src/include/distributed/transaction_management.h

@@ -10,11 +10,13 @@
 #define TRANSACTION_MANAGMENT_H
 
 #include "access/xact.h"
+#include "catalog/objectaddress.h"
 #include "lib/ilist.h"
 #include "lib/stringinfo.h"
 #include "nodes/pg_list.h"
 #include "lib/stringinfo.h"
 #include "nodes/primnodes.h"
+#include "utils/hsearch.h"
 
 /* forward declare, to avoid recursive includes */
 struct DistObjectCacheEntry;
@@ -58,6 +60,7 @@ typedef struct SubXactContext
 {
 	SubTransactionId subId;
 	StringInfo setLocalCmds;
+	HTAB *propagatedObjects;
 } SubXactContext;
 
 /*
@@ -157,6 +160,11 @@ extern bool IsMultiStatementTransaction(void);
 extern void EnsureDistributedTransactionId(void);
 extern bool MaybeExecutingUDF(void);
 
+/* functions for tracking the objects propagated in current transaction */
+extern void TrackPropagatedObject(const ObjectAddress *objectAddress);
+extern void TrackPropagatedTableAndSequences(Oid relationId);
+extern void ResetPropagatedObjects(void);
+extern bool HasAnyDependencyInPropagatedObjects(const ObjectAddress *objectAddress);
 
 /* initialization function(s) */
 extern void InitializeTransactionManagement(void);

src/include/distributed/worker_transaction.h

@@ -73,6 +73,7 @@ extern bool SendOptionalMetadataCommandListToWorkerInCoordinatedTransaction(cons
 																			commandList);
 extern void SendCommandToWorkersWithMetadata(const char *command);
 extern void SendCommandToWorkersWithMetadataViaSuperUser(const char *command);
+extern void SendCommandListToWorkersWithMetadata(List *commands);
 extern void SendBareCommandListToMetadataWorkers(List *commandList);
 extern void EnsureNoModificationsHaveBeenDone(void);
 extern void SendCommandListToWorkerOutsideTransaction(const char *nodeName,

src/test/regress/citus_tests/common.py

@@ -429,6 +429,10 @@ PORT_UPPER_BOUND = 32768
 next_port = PORT_LOWER_BOUND
 
 
+def notice_handler(diag: psycopg.errors.Diagnostic):
+    print(f"{diag.severity}: {diag.message_primary}")
+
+
 def cleanup_test_leftovers(nodes):
     """
     Cleaning up test leftovers needs to be done in a specific order, because
@@ -444,7 +448,7 @@ def cleanup_test_leftovers(nodes):
         node.cleanup_publications()
 
     for node in nodes:
-        node.cleanup_logical_replication_slots()
+        node.cleanup_replication_slots()
 
     for node in nodes:
         node.cleanup_schemas()
@@ -526,10 +530,12 @@ class QueryRunner(ABC):
     def conn(self, *, autocommit=True, **kwargs):
         """Open a psycopg connection to this server"""
         self.set_default_connection_options(kwargs)
-        return psycopg.connect(
+        conn = psycopg.connect(
             autocommit=autocommit,
             **kwargs,
         )
+        conn.add_notice_handler(notice_handler)
+        return conn
 
     def aconn(self, *, autocommit=True, **kwargs):
         """Open an asynchronous psycopg connection to this server"""
@@ -572,6 +578,21 @@ class QueryRunner(ABC):
         with self.cur(**kwargs) as cur:
             cur.execute(query, params=params)
 
+    def sql_row(self, query, params=None, allow_empty_result=False, **kwargs):
+        """Run an SQL query that returns a single row and returns this row
+
+        This opens a new connection and closes it once the query is done
+        """
+        with self.cur(**kwargs) as cur:
+            cur.execute(query, params=params)
+            result = cur.fetchall()
+
+            if allow_empty_result and len(result) == 0:
+                return None
+
+            assert len(result) == 1, "sql_row returns more than one row"
+            return result[0]
+
     def sql_value(self, query, params=None, allow_empty_result=False, **kwargs):
         """Run an SQL query that returns a single cell and return this value
 
@@ -731,7 +752,7 @@ class Postgres(QueryRunner):
         # Used to track objects that we want to clean up at the end of a test
         self.subscriptions = set()
         self.publications = set()
-        self.logical_replication_slots = set()
+        self.replication_slots = set()
         self.schemas = set()
         self.users = set()
 
@@ -983,7 +1004,7 @@ class Postgres(QueryRunner):
     def create_logical_replication_slot(
         self, name, plugin, temporary=False, twophase=False
     ):
-        self.logical_replication_slots.add(name)
+        self.replication_slots.add(name)
         self.sql(
             "SELECT pg_catalog.pg_create_logical_replication_slot(%s,%s,%s,%s)",
             (name, plugin, temporary, twophase),
@@ -1015,12 +1036,21 @@ class Postgres(QueryRunner):
                 )
             )
 
-    def cleanup_logical_replication_slots(self):
-        for slot in self.logical_replication_slots:
+    def cleanup_replication_slots(self):
+        for slot in self.replication_slots:
+            start = time.time()
+            while True:
+                try:
                     self.sql(
                         "SELECT pg_drop_replication_slot(slot_name) FROM pg_replication_slots WHERE slot_name = %s",
                         (slot,),
                     )
+                except psycopg.errors.ObjectInUse:
+                    if time.time() < start + 10:
+                        time.sleep(0.5)
+                        continue
+                    raise
+                break
 
     def cleanup_subscriptions(self):
         for subscription in self.subscriptions:

src/test/regress/citus_tests/run_test.py

@@ -168,6 +168,7 @@ DEPS = {
         ],
     ),
     "grant_on_schema_propagation": TestDeps("minimal_schedule"),
+    "propagate_extension_commands": TestDeps("minimal_schedule"),
 }
 
 

src/test/regress/citus_tests/test/test_extension.py

@@ -0,0 +1,44 @@
+import psycopg
+import pytest
+
+
+def test_create_drop_citus(coord):
+    with coord.cur() as cur1:
+        with coord.cur() as cur2:
+            # Conn1 drops the extension
+            # and Conn2 cannot use it.
+            cur1.execute("DROP EXTENSION citus")
+
+            with pytest.raises(psycopg.errors.UndefinedFunction):
+                # Conn1 dropped the extension. citus_version udf
+                # cannot be found.sycopg.errors.UndefinedFunction
+                # is expected here.
+                cur2.execute("SELECT citus_version();")
+
+            # Conn2 creates the extension,
+            # Conn1 is able to use it immediadtely.
+            cur2.execute("CREATE EXTENSION citus")
+            cur1.execute("SELECT citus_version();")
+            cur1.execute("DROP EXTENSION citus;")
+
+    with coord.cur() as cur1:
+        with coord.cur() as cur2:
+            # A connection is able to create and use the extension
+            # within a transaction block.
+            cur1.execute("BEGIN;")
+            cur1.execute("CREATE TABLE t1(id int);")
+            cur1.execute("CREATE EXTENSION citus;")
+            cur1.execute("SELECT create_reference_table('t1')")
+            cur1.execute("ABORT;")
+
+            # Conn1 aborted so Conn2 is be able to create and
+            # use the extension within a transaction block.
+            cur2.execute("BEGIN;")
+            cur2.execute("CREATE TABLE t1(id int);")
+            cur2.execute("CREATE EXTENSION citus;")
+            cur2.execute("SELECT create_reference_table('t1')")
+            cur2.execute("COMMIT;")
+
+            # Conn2 commited so Conn1 is be able to use the
+            # extension immediately.
+            cur1.execute("SELECT citus_version();")

src/test/regress/expected/distributed_domain.out

@@ -947,3 +947,4 @@ DROP DOMAIN IF EXISTS domain_does_not_exist;
 NOTICE:  type "domain_does_not_exist" does not exist, skipping
 SET client_min_messages TO warning;
 DROP SCHEMA distributed_domain, distributed_domain_moved CASCADE;
+DROP ROLE domain_owner;

src/test/regress/expected/isolation_shard_rebalancer_progress.out

@@ -19,7 +19,7 @@ step s1-rebalance-c1-block-writes:
  <waiting ...>
 step s7-get-progress: 
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -40,8 +40,8 @@ step s7-get-progress:
 
 table_name|shardid|shard_size|sourcename|sourceport|source_shard_size|targetname|targetport|target_shard_size|progress|operation_type|lsn_sanity_check|source_lsn_available|target_lsn_available|status
 ---------------------------------------------------------------------
-colocated1|1500001|     50000|localhost |     57637|            50000|localhost |     57638|             8000|       1|move          |t               |t                   |f                   |Copying Data
-colocated2|1500005|    400000|localhost |     57637|           400000|localhost |     57638|             8000|       1|move          |t               |t                   |f                   |Copying Data
+colocated1|1500001|     40000|localhost |     57637|            40000|localhost |     57638|             8000|       1|move          |t               |t                   |f                   |Copying Data
+colocated2|1500005|    480000|localhost |     57637|           480000|localhost |     57638|             8000|       1|move          |t               |t                   |f                   |Copying Data
 colocated1|1500002|    200000|localhost |     57637|           200000|localhost |     57638|                0|       0|move          |t               |t                   |f                   |Not Started Yet
 colocated2|1500006|      8000|localhost |     57637|             8000|localhost |     57638|                0|       0|move          |t               |t                   |f                   |Not Started Yet
 (4 rows)
@@ -63,7 +63,7 @@ rebalance_table_shards
 step s1-wait:
 step s7-get-progress:
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -102,7 +102,7 @@ step s1-rebalance-c1-block-writes:
  <waiting ...>
 step s7-get-progress: 
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -123,8 +123,8 @@ step s7-get-progress:
 
 table_name|shardid|shard_size|sourcename|sourceport|source_shard_size|targetname|targetport|target_shard_size|progress|operation_type|lsn_sanity_check|source_lsn_available|target_lsn_available|status
 ---------------------------------------------------------------------
-colocated1|1500001|     50000|localhost |     57637|            50000|localhost |     57638|            50000|       2|move          |t               |t                   |f                   |Completed
-colocated2|1500005|    400000|localhost |     57637|           400000|localhost |     57638|           400000|       2|move          |t               |t                   |f                   |Completed
+colocated1|1500001|     40000|localhost |     57637|            40000|localhost |     57638|            40000|       2|move          |t               |t                   |f                   |Completed
+colocated2|1500005|    480000|localhost |     57637|           480000|localhost |     57638|           480000|       2|move          |t               |t                   |f                   |Completed
 colocated1|1500002|    200000|localhost |     57637|           200000|localhost |     57638|                0|       1|move          |t               |t                   |f                   |Setting Up
 colocated2|1500006|      8000|localhost |     57637|             8000|localhost |     57638|                0|       1|move          |t               |t                   |f                   |Setting Up
 (4 rows)
@@ -141,7 +141,7 @@ rebalance_table_shards
 step s1-wait:
 step s7-get-progress:
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -184,7 +184,7 @@ step s1-rebalance-c1-block-writes:
  <waiting ...>
 step s7-get-progress: 
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -205,8 +205,8 @@ step s7-get-progress:
 
 table_name|shardid|shard_size|sourcename|sourceport|source_shard_size|targetname|targetport|target_shard_size|progress|operation_type|lsn_sanity_check|source_lsn_available|target_lsn_available|status
 ---------------------------------------------------------------------
-colocated1|1500001|     50000|localhost |     57637|            50000|localhost |     57638|            50000|       1|move          |t               |t                   |f                   |Copying Data
-colocated2|1500005|    400000|localhost |     57637|           400000|localhost |     57638|           400000|       1|move          |t               |t                   |f                   |Copying Data
+colocated1|1500001|     40000|localhost |     57637|            40000|localhost |     57638|            40000|       1|move          |t               |t                   |f                   |Copying Data
+colocated2|1500005|    480000|localhost |     57637|           480000|localhost |     57638|           480000|       1|move          |t               |t                   |f                   |Copying Data
 colocated1|1500002|    200000|localhost |     57637|           200000|localhost |     57638|                0|       0|move          |t               |t                   |f                   |Not Started Yet
 colocated2|1500006|      8000|localhost |     57637|             8000|localhost |     57638|                0|       0|move          |t               |t                   |f                   |Not Started Yet
 (4 rows)
@@ -228,7 +228,7 @@ rebalance_table_shards
 step s1-wait:
 step s7-get-progress:
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -271,7 +271,7 @@ step s1-rebalance-c1-online:
  <waiting ...>
 step s7-get-progress: 
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -292,8 +292,8 @@ step s7-get-progress:
 
 table_name|shardid|shard_size|sourcename|sourceport|source_shard_size|targetname|targetport|target_shard_size|progress|operation_type|lsn_sanity_check|source_lsn_available|target_lsn_available|status
 ---------------------------------------------------------------------
-colocated1|1500001|     50000|localhost |     57637|            50000|localhost |     57638|             8000|       1|move          |t               |t                   |f                   |Setting Up
-colocated2|1500005|    400000|localhost |     57637|           400000|localhost |     57638|             8000|       1|move          |t               |t                   |f                   |Setting Up
+colocated1|1500001|     40000|localhost |     57637|            40000|localhost |     57638|             8000|       1|move          |t               |t                   |f                   |Setting Up
+colocated2|1500005|    480000|localhost |     57637|           480000|localhost |     57638|             8000|       1|move          |t               |t                   |f                   |Setting Up
 colocated1|1500002|    200000|localhost |     57637|           200000|localhost |     57638|                0|       0|move          |t               |t                   |f                   |Not Started Yet
 colocated2|1500006|      8000|localhost |     57637|             8000|localhost |     57638|                0|       0|move          |t               |t                   |f                   |Not Started Yet
 (4 rows)
@@ -315,7 +315,7 @@ rebalance_table_shards
 step s1-wait:
 step s7-get-progress:
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -358,7 +358,7 @@ step s1-rebalance-c1-online:
  <waiting ...>
 step s7-get-progress: 
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -379,8 +379,8 @@ step s7-get-progress:
 
 table_name|shardid|shard_size|sourcename|sourceport|source_shard_size|targetname|targetport|target_shard_size|progress|operation_type|lsn_sanity_check|source_lsn_available|target_lsn_available|status
 ---------------------------------------------------------------------
-colocated1|1500001|     50000|localhost |     57637|            50000|localhost |     57638|            50000|       1|move          |t               |t                   |t                   |Final Catchup
-colocated2|1500005|    400000|localhost |     57637|           400000|localhost |     57638|           400000|       1|move          |t               |t                   |t                   |Final Catchup
+colocated1|1500001|     40000|localhost |     57637|            40000|localhost |     57638|            40000|       1|move          |t               |t                   |t                   |Final Catchup
+colocated2|1500005|    480000|localhost |     57637|           480000|localhost |     57638|           480000|       1|move          |t               |t                   |t                   |Final Catchup
 colocated1|1500002|    200000|localhost |     57637|           200000|localhost |     57638|                0|       0|move          |t               |t                   |f                   |Not Started Yet
 colocated2|1500006|      8000|localhost |     57637|             8000|localhost |     57638|                0|       0|move          |t               |t                   |f                   |Not Started Yet
 (4 rows)
@@ -402,7 +402,7 @@ rebalance_table_shards
 step s1-wait:
 step s7-get-progress:
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -445,7 +445,7 @@ step s1-shard-move-c1-block-writes:
  <waiting ...>
 step s7-get-progress: 
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -466,8 +466,8 @@ step s7-get-progress:
 
 table_name|shardid|shard_size|sourcename|sourceport|source_shard_size|targetname|targetport|target_shard_size|progress|operation_type|lsn_sanity_check|source_lsn_available|target_lsn_available|status
 ---------------------------------------------------------------------
-colocated1|1500001|     50000|localhost |     57637|            50000|localhost |     57638|             8000|       1|move          |t               |t                   |f                   |Copying Data
-colocated2|1500005|    400000|localhost |     57637|           400000|localhost |     57638|             8000|       1|move          |t               |t                   |f                   |Copying Data
+colocated1|1500001|     40000|localhost |     57637|            40000|localhost |     57638|             8000|       1|move          |t               |t                   |f                   |Copying Data
+colocated2|1500005|    480000|localhost |     57637|           480000|localhost |     57638|             8000|       1|move          |t               |t                   |f                   |Copying Data
 (2 rows)
 
 step s5-release-advisory-lock:
@@ -487,7 +487,7 @@ citus_move_shard_placement
 step s1-wait:
 step s7-get-progress:
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -530,7 +530,7 @@ step s1-shard-move-c1-block-writes:
  <waiting ...>
 step s7-get-progress: 
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -551,8 +551,8 @@ step s7-get-progress:
 
 table_name|shardid|shard_size|sourcename|sourceport|source_shard_size|targetname|targetport|target_shard_size|progress|operation_type|lsn_sanity_check|source_lsn_available|target_lsn_available|status
 ---------------------------------------------------------------------
-colocated1|1500001|     50000|localhost |     57637|            50000|localhost |     57638|            50000|       1|move          |t               |t                   |f                   |Copying Data
-colocated2|1500005|    400000|localhost |     57637|           400000|localhost |     57638|           400000|       1|move          |t               |t                   |f                   |Copying Data
+colocated1|1500001|     40000|localhost |     57637|            40000|localhost |     57638|            40000|       1|move          |t               |t                   |f                   |Copying Data
+colocated2|1500005|    480000|localhost |     57637|           480000|localhost |     57638|           480000|       1|move          |t               |t                   |f                   |Copying Data
 (2 rows)
 
 step s6-release-advisory-lock:
@@ -572,7 +572,7 @@ citus_move_shard_placement
 step s1-wait:
 step s7-get-progress:
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -616,7 +616,7 @@ step s1-shard-copy-c1-block-writes:
  <waiting ...>
 step s7-get-progress: 
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -637,8 +637,8 @@ step s7-get-progress:
 
 table_name|shardid|shard_size|sourcename|sourceport|source_shard_size|targetname|targetport|target_shard_size|progress|operation_type|lsn_sanity_check|source_lsn_available|target_lsn_available|status
 ---------------------------------------------------------------------
-colocated1|1500001|     50000|localhost |     57637|            50000|localhost |     57638|             8000|       1|copy          |t               |t                   |f                   |Copying Data
-colocated2|1500005|    400000|localhost |     57637|           400000|localhost |     57638|             8000|       1|copy          |t               |t                   |f                   |Copying Data
+colocated1|1500001|     40000|localhost |     57637|            40000|localhost |     57638|             8000|       1|copy          |t               |t                   |f                   |Copying Data
+colocated2|1500005|    480000|localhost |     57637|           480000|localhost |     57638|             8000|       1|copy          |t               |t                   |f                   |Copying Data
 (2 rows)
 
 step s5-release-advisory-lock:
@@ -658,7 +658,7 @@ citus_copy_shard_placement
 step s1-wait:
 step s7-get-progress:
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -702,7 +702,7 @@ step s1-shard-copy-c1-block-writes:
  <waiting ...>
 step s7-get-progress: 
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -723,8 +723,8 @@ step s7-get-progress:
 
 table_name|shardid|shard_size|sourcename|sourceport|source_shard_size|targetname|targetport|target_shard_size|progress|operation_type|lsn_sanity_check|source_lsn_available|target_lsn_available|status
 ---------------------------------------------------------------------
-colocated1|1500001|     50000|localhost |     57637|            50000|localhost |     57638|            50000|       1|copy          |t               |t                   |f                   |Copying Data
-colocated2|1500005|    400000|localhost |     57637|           400000|localhost |     57638|           400000|       1|copy          |t               |t                   |f                   |Copying Data
+colocated1|1500001|     40000|localhost |     57637|            40000|localhost |     57638|            40000|       1|copy          |t               |t                   |f                   |Copying Data
+colocated2|1500005|    480000|localhost |     57637|           480000|localhost |     57638|           480000|       1|copy          |t               |t                   |f                   |Copying Data
 (2 rows)
 
 step s6-release-advisory-lock:
@@ -744,7 +744,7 @@ citus_copy_shard_placement
 step s1-wait:
 step s7-get-progress:
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -787,7 +787,7 @@ step s1-shard-move-c1-online:
  <waiting ...>
 step s7-get-progress: 
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -808,8 +808,8 @@ step s7-get-progress:
 
 table_name|shardid|shard_size|sourcename|sourceport|source_shard_size|targetname|targetport|target_shard_size|progress|operation_type|lsn_sanity_check|source_lsn_available|target_lsn_available|status
 ---------------------------------------------------------------------
-colocated1|1500001|     50000|localhost |     57637|            50000|localhost |     57638|             8000|       1|move          |t               |t                   |f                   |Setting Up
-colocated2|1500005|    400000|localhost |     57637|           400000|localhost |     57638|             8000|       1|move          |t               |t                   |f                   |Setting Up
+colocated1|1500001|     40000|localhost |     57637|            40000|localhost |     57638|             8000|       1|move          |t               |t                   |f                   |Setting Up
+colocated2|1500005|    480000|localhost |     57637|           480000|localhost |     57638|             8000|       1|move          |t               |t                   |f                   |Setting Up
 (2 rows)
 
 step s5-release-advisory-lock:
@@ -829,7 +829,7 @@ citus_move_shard_placement
 step s1-wait:
 step s7-get-progress:
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -872,7 +872,7 @@ step s1-shard-move-c1-online:
  <waiting ...>
 step s7-get-progress: 
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -893,8 +893,8 @@ step s7-get-progress:
 
 table_name|shardid|shard_size|sourcename|sourceport|source_shard_size|targetname|targetport|target_shard_size|progress|operation_type|lsn_sanity_check|source_lsn_available|target_lsn_available|status
 ---------------------------------------------------------------------
-colocated1|1500001|     50000|localhost |     57637|            50000|localhost |     57638|            50000|       1|move          |t               |t                   |t                   |Final Catchup
-colocated2|1500005|    400000|localhost |     57637|           400000|localhost |     57638|           400000|       1|move          |t               |t                   |t                   |Final Catchup
+colocated1|1500001|     40000|localhost |     57637|            40000|localhost |     57638|            40000|       1|move          |t               |t                   |t                   |Final Catchup
+colocated2|1500005|    480000|localhost |     57637|           480000|localhost |     57638|           480000|       1|move          |t               |t                   |t                   |Final Catchup
 (2 rows)
 
 step s6-release-advisory-lock:
@@ -914,7 +914,7 @@ citus_move_shard_placement
 step s1-wait:
 step s7-get-progress:
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -958,7 +958,7 @@ step s1-shard-copy-c1-online:
  <waiting ...>
 step s7-get-progress: 
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -979,8 +979,8 @@ step s7-get-progress:
 
 table_name|shardid|shard_size|sourcename|sourceport|source_shard_size|targetname|targetport|target_shard_size|progress|operation_type|lsn_sanity_check|source_lsn_available|target_lsn_available|status
 ---------------------------------------------------------------------
-colocated1|1500001|     50000|localhost |     57637|            50000|localhost |     57638|             8000|       1|copy          |t               |t                   |f                   |Setting Up
-colocated2|1500005|    400000|localhost |     57637|           400000|localhost |     57638|             8000|       1|copy          |t               |t                   |f                   |Setting Up
+colocated1|1500001|     40000|localhost |     57637|            40000|localhost |     57638|             8000|       1|copy          |t               |t                   |f                   |Setting Up
+colocated2|1500005|    480000|localhost |     57637|           480000|localhost |     57638|             8000|       1|copy          |t               |t                   |f                   |Setting Up
 (2 rows)
 
 step s5-release-advisory-lock:
@@ -1000,7 +1000,7 @@ citus_copy_shard_placement
 step s1-wait:
 step s7-get-progress:
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -1044,7 +1044,7 @@ step s1-shard-copy-c1-online:
  <waiting ...>
 step s7-get-progress: 
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -1065,8 +1065,8 @@ step s7-get-progress:
 
 table_name|shardid|shard_size|sourcename|sourceport|source_shard_size|targetname|targetport|target_shard_size|progress|operation_type|lsn_sanity_check|source_lsn_available|target_lsn_available|status
 ---------------------------------------------------------------------
-colocated1|1500001|     50000|localhost |     57637|            50000|localhost |     57638|            50000|       1|copy          |t               |t                   |t                   |Final Catchup
-colocated2|1500005|    400000|localhost |     57637|           400000|localhost |     57638|           400000|       1|copy          |t               |t                   |t                   |Final Catchup
+colocated1|1500001|     40000|localhost |     57637|            40000|localhost |     57638|            40000|       1|copy          |t               |t                   |t                   |Final Catchup
+colocated2|1500005|    480000|localhost |     57637|           480000|localhost |     57638|           480000|       1|copy          |t               |t                   |t                   |Final Catchup
 (2 rows)
 
 step s6-release-advisory-lock:
@@ -1086,7 +1086,7 @@ citus_copy_shard_placement
 step s1-wait:
 step s7-get-progress:
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -1132,7 +1132,7 @@ step s4-shard-move-sep-block-writes:
  <waiting ...>
 step s7-get-progress-ordered: 
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -1153,9 +1153,9 @@ step s7-get-progress-ordered:
 
 table_name|shardid|shard_size|sourcename|sourceport|source_shard_size|targetname|targetport|target_shard_size|progress|operation_type|lsn_sanity_check|source_lsn_available|target_lsn_available
 ---------------------------------------------------------------------
-colocated1|1500001|     50000|localhost |     57637|            50000|localhost |     57638|             8000|       1|move          |t               |t                   |f
-colocated2|1500005|    400000|localhost |     57637|           400000|localhost |     57638|             8000|       1|move          |t               |t                   |f
-separate  |1500009|     50000|localhost |     57637|            50000|localhost |     57638|             8000|       1|move          |t               |t                   |f
+colocated1|1500001|     40000|localhost |     57637|            40000|localhost |     57638|             8000|       1|move          |t               |t                   |f
+colocated2|1500005|    480000|localhost |     57637|           480000|localhost |     57638|             8000|       1|move          |t               |t                   |f
+separate  |1500009|    200000|localhost |     57637|           200000|localhost |     57638|             8000|       1|move          |t               |t                   |f
 (3 rows)
 
 step s5-release-advisory-lock:
@@ -1182,7 +1182,7 @@ step s1-wait:
 step s4-wait:
 step s7-get-progress-ordered:
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -1228,7 +1228,7 @@ step s4-shard-move-sep-block-writes:
  <waiting ...>
 step s7-get-progress-ordered: 
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,
@@ -1249,9 +1249,9 @@ step s7-get-progress-ordered:
 
 table_name|shardid|shard_size|sourcename|sourceport|source_shard_size|targetname|targetport|target_shard_size|progress|operation_type|lsn_sanity_check|source_lsn_available|target_lsn_available
 ---------------------------------------------------------------------
-colocated1|1500001|     50000|localhost |     57637|            50000|localhost |     57638|            50000|       1|move          |t               |t                   |f
-colocated2|1500005|    400000|localhost |     57637|           400000|localhost |     57638|           400000|       1|move          |t               |t                   |f
-separate  |1500009|     50000|localhost |     57637|            50000|localhost |     57638|           200000|       1|move          |t               |t                   |f
+colocated1|1500001|     40000|localhost |     57637|            40000|localhost |     57638|            40000|       1|move          |t               |t                   |f
+colocated2|1500005|    480000|localhost |     57637|           480000|localhost |     57638|           480000|       1|move          |t               |t                   |f
+separate  |1500009|    200000|localhost |     57637|           200000|localhost |     57638|           200000|       1|move          |t               |t                   |f
 (3 rows)
 
 step s6-release-advisory-lock:
@@ -1278,7 +1278,7 @@ step s1-wait:
 step s4-wait:
 step s7-get-progress-ordered:
  set LOCAL client_min_messages=NOTICE;
- WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+ WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
  SELECT
   table_name,
   shardid,

src/test/regress/expected/multi_schema_support.out

@@ -1393,6 +1393,284 @@ BEGIN;
 
     ALTER SCHEMA bar RENAME TO foo;
 ROLLBACK;
+-- below tests are to verify dependency propagation with nested sub-transactions
+-- TEST1
+BEGIN;
+    CREATE SCHEMA sc1;
+    CREATE SEQUENCE sc1.seq;
+    CREATE TABLE sc1.s1(id int default(nextval('sc1.seq')));
+    SELECT create_distributed_table('sc1.s1','id');
+ create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+NOTICE:  drop cascades to 2 other objects
+DETAIL:  drop cascades to sequence sc1.seq
+drop cascades to table sc1.s1
+-- TEST2
+CREATE SCHEMA sc1;
+BEGIN;
+    CREATE SEQUENCE sc1.seq1;
+    CREATE TABLE sc1.s1(id int default(nextval('sc1.seq1')));
+    SELECT create_distributed_table('sc1.s1','id');
+ create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+NOTICE:  drop cascades to 2 other objects
+DETAIL:  drop cascades to sequence sc1.seq1
+drop cascades to table sc1.s1
+-- TEST3
+SET citus.enable_metadata_sync TO off;
+CREATE SCHEMA sc1;
+SET citus.enable_metadata_sync TO on;
+BEGIN;
+    CREATE TABLE sc1.s1(id int);
+    SELECT create_distributed_table('sc1.s1','id');
+ create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+NOTICE:  drop cascades to table sc1.s1
+-- TEST4
+BEGIN;
+  SAVEPOINT sp1;
+    CREATE SCHEMA sc1;
+  ROLLBACK TO SAVEPOINT sp1;
+  SET LOCAL citus.enable_metadata_sync TO off;
+  CREATE SCHEMA sc1;
+  SET LOCAL citus.enable_metadata_sync TO on;
+  CREATE TABLE sc1.s1(id int);
+  SELECT create_distributed_table('sc1.s1','id');
+ create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+NOTICE:  drop cascades to table sc1.s1
+-- TEST5
+BEGIN;
+  SAVEPOINT sp1;
+    CREATE SCHEMA sc1;
+  RELEASE SAVEPOINT sp1;
+  CREATE SEQUENCE seq1;
+  CREATE TABLE sc1.s1(id int default(nextval('seq1')));
+  SELECT create_distributed_table('sc1.s1','id');
+ create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+NOTICE:  drop cascades to table sc1.s1
+DROP SEQUENCE seq1;
+-- TEST6
+BEGIN;
+  SAVEPOINT sp1;
+    SAVEPOINT sp2;
+      CREATE SCHEMA sc1;
+    ROLLBACK TO SAVEPOINT sp2;
+  RELEASE SAVEPOINT sp1;
+  SET LOCAL citus.enable_metadata_sync TO off;
+  CREATE SCHEMA sc1;
+  SET LOCAL citus.enable_metadata_sync TO on;
+  CREATE TABLE sc1.s1(id int);
+  SELECT create_distributed_table('sc1.s1','id');
+ create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+NOTICE:  drop cascades to table sc1.s1
+-- TEST7
+BEGIN;
+  SAVEPOINT sp1;
+    SAVEPOINT sp2;
+      CREATE SCHEMA sc1;
+    RELEASE SAVEPOINT sp2;
+  RELEASE SAVEPOINT sp1;
+  CREATE SEQUENCE seq1;
+  CREATE TABLE sc1.s1(id int default(nextval('seq1')));
+  SELECT create_distributed_table('sc1.s1','id');
+ create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+NOTICE:  drop cascades to table sc1.s1
+DROP SEQUENCE seq1;
+-- TEST8
+BEGIN;
+  SAVEPOINT sp1;
+    SAVEPOINT sp2;
+      CREATE SCHEMA sc1;
+    RELEASE SAVEPOINT sp2;
+  ROLLBACK TO SAVEPOINT sp1;
+  SET LOCAL citus.enable_metadata_sync TO off;
+  CREATE SCHEMA sc1;
+  SET LOCAL citus.enable_metadata_sync TO on;
+  CREATE TABLE sc1.s1(id int);
+  SELECT create_distributed_table('sc1.s1','id');
+ create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+NOTICE:  drop cascades to table sc1.s1
+-- TEST9
+BEGIN;
+  SAVEPOINT sp1;
+    SAVEPOINT sp2;
+      CREATE SCHEMA sc2;
+    ROLLBACK TO SAVEPOINT sp2;
+    SAVEPOINT sp3;
+      CREATE SCHEMA sc1;
+    RELEASE SAVEPOINT sp3;
+  RELEASE SAVEPOINT sp1;
+  CREATE SEQUENCE seq1;
+  CREATE TABLE sc1.s1(id int default(nextval('seq1')));
+  SELECT create_distributed_table('sc1.s1','id');
+ create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+NOTICE:  drop cascades to table sc1.s1
+DROP SEQUENCE seq1;
+-- TEST10
+BEGIN;
+  SAVEPOINT sp1;
+    SAVEPOINT sp2;
+      CREATE SCHEMA sc2;
+    RELEASE SAVEPOINT sp2;
+    SAVEPOINT sp3;
+      CREATE SCHEMA sc3;
+      SAVEPOINT sp4;
+        CREATE SCHEMA sc1;
+      ROLLBACK TO SAVEPOINT sp4;
+    RELEASE SAVEPOINT sp3;
+  RELEASE SAVEPOINT sp1;
+  SET LOCAL citus.enable_metadata_sync TO off;
+  CREATE SCHEMA sc1;
+  SET LOCAL citus.enable_metadata_sync TO on;
+  CREATE TABLE sc1.s1(id int);
+  SELECT create_distributed_table('sc1.s1','id');
+ create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+NOTICE:  drop cascades to table sc1.s1
+DROP SCHEMA sc2 CASCADE;
+DROP SCHEMA sc3 CASCADE;
+-- TEST11
+BEGIN;
+  SAVEPOINT sp1;
+    SAVEPOINT sp2;
+      CREATE SCHEMA sc2;
+    RELEASE SAVEPOINT sp2;
+    SAVEPOINT sp3;
+      CREATE SCHEMA sc3;
+      SAVEPOINT sp4;
+        CREATE SCHEMA sc1;
+      RELEASE SAVEPOINT sp4;
+    RELEASE SAVEPOINT sp3;
+  RELEASE SAVEPOINT sp1;
+  CREATE SEQUENCE seq1;
+  CREATE TABLE sc1.s1(id int default(nextval('seq1')));
+  SELECT create_distributed_table('sc1.s1','id');
+ create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+NOTICE:  drop cascades to table sc1.s1
+DROP SCHEMA sc2 CASCADE;
+DROP SCHEMA sc3 CASCADE;
+DROP SEQUENCE seq1;
+-- TEST12
+BEGIN;
+  SAVEPOINT sp1;
+    SAVEPOINT sp2;
+      CREATE SCHEMA sc2;
+    RELEASE SAVEPOINT sp2;
+    SAVEPOINT sp3;
+      CREATE SCHEMA sc3;
+      SAVEPOINT sp4;
+        CREATE SEQUENCE seq1;
+        CREATE SCHEMA sc1;
+        CREATE TABLE sc1.s1(id int default(nextval('seq1')));
+        SELECT create_distributed_table('sc1.s1','id');
+ create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+      RELEASE SAVEPOINT sp4;
+    RELEASE SAVEPOINT sp3;
+  RELEASE SAVEPOINT sp1;
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+NOTICE:  drop cascades to table sc1.s1
+DROP SCHEMA sc2 CASCADE;
+DROP SCHEMA sc3 CASCADE;
+DROP SEQUENCE seq1;
+-- issue-6614
+CREATE FUNCTION create_schema_test() RETURNS void AS $$
+BEGIN
+    SET citus.create_object_propagation = 'deferred';
+    CREATE SCHEMA test_1;
+    CREATE TABLE test_1.test (
+        id bigserial constraint test_pk primary key,
+        creation_date timestamp constraint test_creation_date_df default timezone('UTC'::text, CURRENT_TIMESTAMP)  not null
+    );
+    PERFORM create_reference_table('test_1.test');
+	RETURN;
+END;
+$$ LANGUAGE plpgsql;
+SELECT create_schema_test();
+ create_schema_test
+---------------------------------------------------------------------
+
+(1 row)
+
+SELECT result FROM run_command_on_all_nodes($$ SELECT COUNT(*) = 1 FROM pg_dist_partition WHERE logicalrelid = 'test_1.test'::regclass $$);
+ result
+---------------------------------------------------------------------
+ t
+ t
+ t
+(3 rows)
+
+DROP FUNCTION create_schema_test;
+DROP SCHEMA test_1 CASCADE;
+NOTICE:  drop cascades to 2 other objects
+DETAIL:  drop cascades to table test_1.test
+drop cascades to table test_1.test_1197064
 -- Clean up the created schema
 SET client_min_messages TO WARNING;
 SELECT pg_identify_object_as_address(classid, objid, objsubid) FROM pg_catalog.pg_dist_object

src/test/regress/expected/pg16.out

@@ -314,6 +314,80 @@ SELECT result FROM run_command_on_workers
 (2 rows)
 
 SET search_path TO pg16;
+SET citus.next_shard_id TO 951000;
+-- Foreign table TRUNCATE trigger
+-- Relevant PG commit:
+-- https://github.com/postgres/postgres/commit/3b00a94
+SELECT 1 FROM citus_add_node('localhost', :master_port, groupid => 0);
+ ?column?
+---------------------------------------------------------------------
+        1
+(1 row)
+
+SET citus.use_citus_managed_tables TO ON;
+CREATE TABLE foreign_table_test (id integer NOT NULL, data text, a bigserial);
+INSERT INTO foreign_table_test VALUES (1, 'text_test');
+CREATE EXTENSION postgres_fdw;
+CREATE SERVER foreign_server
+        FOREIGN DATA WRAPPER postgres_fdw
+        OPTIONS (host 'localhost', port :'master_port', dbname 'regression');
+CREATE USER MAPPING FOR CURRENT_USER
+        SERVER foreign_server
+        OPTIONS (user 'postgres');
+CREATE FOREIGN TABLE foreign_table (
+        id integer NOT NULL,
+        data text,
+        a bigserial
+)
+        SERVER foreign_server
+        OPTIONS (schema_name 'pg16', table_name 'foreign_table_test');
+-- verify it's a Citus foreign table
+SELECT partmethod, repmodel FROM pg_dist_partition
+WHERE logicalrelid = 'foreign_table'::regclass ORDER BY logicalrelid;
+ partmethod | repmodel
+---------------------------------------------------------------------
+ n          | s
+(1 row)
+
+INSERT INTO foreign_table VALUES (2, 'test_2');
+INSERT INTO foreign_table_test VALUES (3, 'test_3');
+CREATE FUNCTION trigger_func() RETURNS trigger LANGUAGE plpgsql AS $$
+BEGIN
+	RAISE NOTICE 'trigger_func(%) called: action = %, when = %, level = %',
+		TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+	RETURN NULL;
+END;$$;
+CREATE FUNCTION trigger_func_on_shard() RETURNS trigger LANGUAGE plpgsql AS $$
+BEGIN
+	RAISE NOTICE 'trigger_func_on_shard(%) called: action = %, when = %, level = %',
+		TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+	RETURN NULL;
+END;$$;
+CREATE TRIGGER trig_stmt_before BEFORE TRUNCATE ON foreign_table
+	FOR EACH STATEMENT EXECUTE PROCEDURE trigger_func();
+SET citus.override_table_visibility TO off;
+CREATE TRIGGER trig_stmt_shard_before BEFORE TRUNCATE ON foreign_table_951001
+	FOR EACH STATEMENT EXECUTE PROCEDURE trigger_func_on_shard();
+RESET citus.override_table_visibility;
+SELECT * FROM foreign_table ORDER BY 1;
+ id |   data    | a
+---------------------------------------------------------------------
+  1 | text_test | 1
+  2 | test_2    | 1
+  3 | test_3    | 2
+(3 rows)
+
+TRUNCATE foreign_table;
+NOTICE:  trigger_func(<NULL>) called: action = TRUNCATE, when = BEFORE, level = STATEMENT
+CONTEXT:  PL/pgSQL function trigger_func() line XX at RAISE
+NOTICE:  trigger_func_on_shard(<NULL>) called: action = TRUNCATE, when = BEFORE, level = STATEMENT
+CONTEXT:  PL/pgSQL function trigger_func_on_shard() line XX at RAISE
+SELECT * FROM foreign_table ORDER BY 1;
+ id | data | a
+---------------------------------------------------------------------
+(0 rows)
+
+RESET citus.use_citus_managed_tables;
 --
 -- COPY FROM ... DEFAULT
 -- Already supported in Citus, adding all PG tests with a distributed table
@@ -676,6 +750,62 @@ SELECT result FROM run_command_on_workers
  REINDEX
 (2 rows)
 
+--
+-- random_normal() to provide normally-distributed random numbers
+-- adding here the same tests as the ones with random() in aggregate_support.sql
+-- Relevant PG commit: https://github.com/postgres/postgres/commit/38d8176
+--
+CREATE TABLE dist_table (dist_col int, agg_col numeric);
+SELECT create_distributed_table('dist_table', 'dist_col');
+ create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+CREATE TABLE ref_table (int_col int);
+SELECT create_reference_table('ref_table');
+ create_reference_table
+---------------------------------------------------------------------
+
+(1 row)
+
+-- Test the cases where the worker agg exec. returns no tuples.
+SELECT PERCENTILE_DISC(.25) WITHIN GROUP (ORDER BY agg_col)
+FROM (SELECT *, random_normal() FROM dist_table) a;
+ percentile_disc
+---------------------------------------------------------------------
+
+(1 row)
+
+SELECT PERCENTILE_DISC((2 > random_normal(stddev => 1, mean => 0))::int::numeric / 10)
+       WITHIN GROUP (ORDER BY agg_col)
+FROM dist_table
+LEFT JOIN ref_table ON TRUE;
+ percentile_disc
+---------------------------------------------------------------------
+
+(1 row)
+
+-- run the same queries after loading some data
+INSERT INTO dist_table VALUES (2, 11.2), (3, NULL), (6, 3.22), (3, 4.23), (5, 5.25),
+                              (4, 63.4), (75, NULL), (80, NULL), (96, NULL), (8, 1078), (0, 1.19);
+SELECT PERCENTILE_DISC(.25) WITHIN GROUP (ORDER BY agg_col)
+FROM (SELECT *, random_normal() FROM dist_table) a;
+ percentile_disc
+---------------------------------------------------------------------
+            3.22
+(1 row)
+
+SELECT PERCENTILE_DISC((2 > random_normal(stddev => 1, mean => 0))::int::numeric / 10)
+       WITHIN GROUP (ORDER BY agg_col)
+FROM dist_table
+LEFT JOIN ref_table ON TRUE;
+ percentile_disc
+---------------------------------------------------------------------
+            1.19
+(1 row)
+
 \set VERBOSITY terse
 SET client_min_messages TO ERROR;
+DROP EXTENSION postgres_fdw CASCADE;
 DROP SCHEMA pg16 CASCADE;

src/test/regress/expected/publication.out

@@ -375,6 +375,158 @@ END;
 CREATE PUBLICATION pubdep FOR TABLES IN SCHEMA deptest;
 RESET citus.create_object_propagation;
 DROP SCHEMA deptest CASCADE;
+--
+-- PG16 allows publications with schema and table of the same schema.
+-- backpatched to PG15
+-- Relevant PG commit: https://github.com/postgres/postgres/commit/13a185f
+--
+CREATE SCHEMA publication2;
+CREATE TABLE publication2.test1 (id int);
+SELECT create_distributed_table('publication2.test1', 'id');
+ create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+-- should be able to create publication with schema and table of the same
+-- schema
+CREATE PUBLICATION testpub_for_tbl_schema FOR TABLES IN SCHEMA publication2, TABLE publication2.test1;
+SELECT DISTINCT c FROM (
+  SELECT unnest(result::text[]) c
+  FROM run_command_on_workers($$
+    SELECT array_agg(c) FROM (SELECT c FROM unnest(activate_node_snapshot()) c WHERE c LIKE '%CREATE PUBLICATION%' AND c LIKE '%testpub_for_tbl_schema%' ORDER BY 1) s$$)
+  ORDER BY c) s;
+                                                                                                                       c
+---------------------------------------------------------------------
+ SELECT worker_create_or_replace_object('CREATE PUBLICATION testpub_for_tbl_schema FOR TABLES IN SCHEMA publication2, TABLE publication2.test1 WITH (publish_via_partition_root = ''false'', publish = ''insert, update, delete, truncate'')');
+(1 row)
+
+CREATE TABLE publication.test2 (id int);
+SELECT create_distributed_table('publication.test2', 'id');
+ create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+ALTER PUBLICATION testpub_for_tbl_schema ADD TABLE publication.test2;
+SELECT DISTINCT c FROM (
+  SELECT unnest(result::text[]) c
+  FROM run_command_on_workers($$
+    SELECT array_agg(c) FROM (SELECT c FROM unnest(activate_node_snapshot()) c WHERE c LIKE '%CREATE PUBLICATION%' AND c LIKE '%testpub_for_tbl_schema%' ORDER BY 1) s$$)
+  ORDER BY c) s;
+                                                                                                                                    c
+---------------------------------------------------------------------
+ SELECT worker_create_or_replace_object('CREATE PUBLICATION testpub_for_tbl_schema FOR TABLES IN SCHEMA publication2, TABLE publication2.test1, TABLE publication.test2 WITH (publish_via_partition_root = ''false'', publish = ''insert, update, delete, truncate'')');
+(1 row)
+
+-- should be able to have publication2 schema and its new table test2 in testpub_for_tbl_schema publication
+ALTER TABLE test2 SET SCHEMA publication2;
+-- should be able to add a table of the same schema to the schema publication
+CREATE TABLE publication2.test3 (x int primary key, y int, "column-1" int);
+SELECT create_distributed_table('publication2.test3', 'x');
+ create_distributed_table
+---------------------------------------------------------------------
+
+(1 row)
+
+ALTER PUBLICATION testpub_for_tbl_schema ADD TABLE publication2.test3;
+SELECT DISTINCT c FROM (
+  SELECT unnest(result::text[]) c
+  FROM run_command_on_workers($$
+    SELECT array_agg(c) FROM (SELECT c FROM unnest(activate_node_snapshot()) c WHERE c LIKE '%CREATE PUBLICATION%' AND c LIKE '%testpub_for_tbl_schema%' ORDER BY 1) s$$)
+  ORDER BY c) s;
+                                                                                                                                                 c
+---------------------------------------------------------------------
+ SELECT worker_create_or_replace_object('CREATE PUBLICATION testpub_for_tbl_schema FOR TABLES IN SCHEMA publication2, TABLE publication2.test1, TABLE publication2.test2, TABLE publication2.test3 WITH (publish_via_partition_root = ''false'', publish = ''insert, update, delete, truncate'')');
+(1 row)
+
+-- should be able to drop the table
+ALTER PUBLICATION testpub_for_tbl_schema DROP TABLE publication2.test3;
+SELECT DISTINCT c FROM (
+  SELECT unnest(result::text[]) c
+  FROM run_command_on_workers($$
+    SELECT array_agg(c) FROM (SELECT c FROM unnest(activate_node_snapshot()) c WHERE c LIKE '%CREATE PUBLICATION%' AND c LIKE '%testpub_for_tbl_schema%' ORDER BY 1) s$$)
+  ORDER BY c) s;
+                                                                                                                                    c
+---------------------------------------------------------------------
+ SELECT worker_create_or_replace_object('CREATE PUBLICATION testpub_for_tbl_schema FOR TABLES IN SCHEMA publication2, TABLE publication2.test1, TABLE publication2.test2 WITH (publish_via_partition_root = ''false'', publish = ''insert, update, delete, truncate'')');
+(1 row)
+
+DROP PUBLICATION testpub_for_tbl_schema;
+CREATE PUBLICATION testpub_for_tbl_schema FOR TABLES IN SCHEMA publication2;
+-- should be able to set publication with schema and table of the same schema
+ALTER PUBLICATION testpub_for_tbl_schema SET TABLES IN SCHEMA publication2, TABLE publication2.test1 WHERE (id < 99);
+SELECT DISTINCT c FROM (
+  SELECT unnest(result::text[]) c
+  FROM run_command_on_workers($$
+    SELECT array_agg(c) FROM (SELECT c FROM unnest(activate_node_snapshot()) c WHERE c LIKE '%CREATE PUBLICATION%' AND c LIKE '%testpub_for_tbl_schema%' ORDER BY 1) s$$)
+  ORDER BY c) s;
+                                                                                                                                   c
+---------------------------------------------------------------------
+ SELECT worker_create_or_replace_object('CREATE PUBLICATION testpub_for_tbl_schema FOR TABLES IN SCHEMA publication2, TABLE publication2.test1 WHERE ((test1.id < 99)) WITH (publish_via_partition_root = ''false'', publish = ''insert, update, delete, truncate'')');
+(1 row)
+
+-- test that using column list for table is disallowed if any schemas are
+-- part of the publication
+DROP PUBLICATION testpub_for_tbl_schema;
+-- failure - cannot use column list and schema together
+CREATE PUBLICATION testpub_for_tbl_schema FOR TABLES IN SCHEMA publication2, TABLE publication2.test3(y);
+ERROR:  cannot use column list for relation "publication2.test3" in publication "testpub_for_tbl_schema"
+DETAIL:  Column lists cannot be specified in publications containing FOR TABLES IN SCHEMA elements.
+-- ok - only publish schema
+CREATE PUBLICATION testpub_for_tbl_schema FOR TABLES IN SCHEMA publication2;
+SELECT DISTINCT c FROM (
+  SELECT unnest(result::text[]) c
+  FROM run_command_on_workers($$
+    SELECT array_agg(c) FROM (SELECT c FROM unnest(activate_node_snapshot()) c WHERE c LIKE '%CREATE PUBLICATION%' AND c LIKE '%testpub_for_tbl_schema%' ORDER BY 1) s$$)
+  ORDER BY c) s;
+                                                                                                          c
+---------------------------------------------------------------------
+ SELECT worker_create_or_replace_object('CREATE PUBLICATION testpub_for_tbl_schema FOR TABLES IN SCHEMA publication2 WITH (publish_via_partition_root = ''false'', publish = ''insert, update, delete, truncate'')');
+(1 row)
+
+-- failure - add a table with column list when there is already a schema in the
+-- publication
+ALTER PUBLICATION testpub_for_tbl_schema ADD TABLE publication2.test3(y);
+ERROR:  cannot use column list for relation "publication2.test3" in publication "testpub_for_tbl_schema"
+DETAIL:  Column lists cannot be specified in publications containing FOR TABLES IN SCHEMA elements.
+-- ok - only publish table with column list
+ALTER PUBLICATION testpub_for_tbl_schema SET TABLE publication2.test3(y);
+SELECT DISTINCT c FROM (
+  SELECT unnest(result::text[]) c
+  FROM run_command_on_workers($$
+    SELECT array_agg(c) FROM (SELECT c FROM unnest(activate_node_snapshot()) c WHERE c LIKE '%CREATE PUBLICATION%' AND c LIKE '%testpub_for_tbl_schema%' ORDER BY 1) s$$)
+  ORDER BY c) s;
+                                                                                                          c
+---------------------------------------------------------------------
+ SELECT worker_create_or_replace_object('CREATE PUBLICATION testpub_for_tbl_schema FOR TABLE publication2.test3 (y) WITH (publish_via_partition_root = ''false'', publish = ''insert, update, delete, truncate'')');
+(1 row)
+
+-- failure - specify a schema when there is already a column list in the
+-- publication
+ALTER PUBLICATION testpub_for_tbl_schema ADD TABLES IN SCHEMA publication2;
+ERROR:  cannot add schema to publication "testpub_for_tbl_schema"
+DETAIL:  Schemas cannot be added if any tables that specify a column list are already part of the publication.
+-- failure - cannot SET column list and schema together
+ALTER PUBLICATION testpub_for_tbl_schema SET TABLES IN SCHEMA publication2, TABLE publication2.test3(y);
+ERROR:  cannot use column list for relation "publication2.test3" in publication "testpub_for_tbl_schema"
+DETAIL:  Column lists cannot be specified in publications containing FOR TABLES IN SCHEMA elements.
+-- ok - drop table
+ALTER PUBLICATION testpub_for_tbl_schema DROP TABLE publication2.test3;
+SELECT DISTINCT c FROM (
+  SELECT unnest(result::text[]) c
+  FROM run_command_on_workers($$
+    SELECT array_agg(c) FROM (SELECT c FROM unnest(activate_node_snapshot()) c WHERE c LIKE '%CREATE PUBLICATION%' AND c LIKE '%testpub_for_tbl_schema%' ORDER BY 1) s$$)
+  ORDER BY c) s;
+                                                                                         c
+---------------------------------------------------------------------
+ SELECT worker_create_or_replace_object('CREATE PUBLICATION testpub_for_tbl_schema WITH (publish_via_partition_root = ''false'', publish = ''insert, update, delete, truncate'')');
+(1 row)
+
+-- failure - cannot ADD column list and schema together
+ALTER PUBLICATION testpub_for_tbl_schema ADD TABLES IN SCHEMA publication2, TABLE publication2.test3(y);
+ERROR:  cannot use column list for relation "publication2.test3" in publication "testpub_for_tbl_schema"
+DETAIL:  Column lists cannot be specified in publications containing FOR TABLES IN SCHEMA elements.
 -- make sure we can sync all the publication metadata
 SELECT start_metadata_sync_to_all_nodes();
  start_metadata_sync_to_all_nodes
@@ -386,7 +538,9 @@ DROP PUBLICATION pubdep;
 DROP PUBLICATION "pub-mix";
 DROP PUBLICATION pubtables;
 DROP PUBLICATION pubpartitioned;
+DROP PUBLICATION testpub_for_tbl_schema;
 SET client_min_messages TO ERROR;
 DROP SCHEMA publication CASCADE;
 DROP SCHEMA "publication-1" CASCADE;
 DROP SCHEMA citus_schema_1 CASCADE;
+DROP SCHEMA publication2 CASCADE;

src/test/regress/spec/isolation_shard_rebalancer_progress.spec

@@ -131,7 +131,7 @@ session "s7"
 step "s7-get-progress"
 {
 	set LOCAL client_min_messages=NOTICE;
-	WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+	WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
 	SELECT
 		table_name,
 		shardid,
@@ -157,7 +157,7 @@ step "s7-get-progress"
 step "s7-get-progress-ordered"
 {
 	set LOCAL client_min_messages=NOTICE;
-	WITH possible_sizes(size) as (VALUES (0), (8000), (50000), (200000), (400000))
+	WITH possible_sizes(size) as (VALUES (0), (8000), (40000), (200000), (480000))
 	SELECT
 		table_name,
 		shardid,

src/test/regress/sql/distributed_domain.sql

@@ -487,3 +487,4 @@ DROP DOMAIN IF EXISTS domain_does_not_exist;
 
 SET client_min_messages TO warning;
 DROP SCHEMA distributed_domain, distributed_domain_moved CASCADE;
+DROP ROLE domain_owner;

src/test/regress/sql/multi_schema_support.sql

@@ -995,6 +995,219 @@ BEGIN;
     ALTER SCHEMA bar RENAME TO foo;
 ROLLBACK;
 
+-- below tests are to verify dependency propagation with nested sub-transactions
+-- TEST1
+BEGIN;
+    CREATE SCHEMA sc1;
+    CREATE SEQUENCE sc1.seq;
+    CREATE TABLE sc1.s1(id int default(nextval('sc1.seq')));
+    SELECT create_distributed_table('sc1.s1','id');
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+
+-- TEST2
+CREATE SCHEMA sc1;
+BEGIN;
+    CREATE SEQUENCE sc1.seq1;
+    CREATE TABLE sc1.s1(id int default(nextval('sc1.seq1')));
+    SELECT create_distributed_table('sc1.s1','id');
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+
+-- TEST3
+SET citus.enable_metadata_sync TO off;
+CREATE SCHEMA sc1;
+SET citus.enable_metadata_sync TO on;
+BEGIN;
+    CREATE TABLE sc1.s1(id int);
+    SELECT create_distributed_table('sc1.s1','id');
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+
+-- TEST4
+BEGIN;
+  SAVEPOINT sp1;
+    CREATE SCHEMA sc1;
+  ROLLBACK TO SAVEPOINT sp1;
+
+  SET LOCAL citus.enable_metadata_sync TO off;
+  CREATE SCHEMA sc1;
+  SET LOCAL citus.enable_metadata_sync TO on;
+
+  CREATE TABLE sc1.s1(id int);
+  SELECT create_distributed_table('sc1.s1','id');
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+
+-- TEST5
+BEGIN;
+  SAVEPOINT sp1;
+    CREATE SCHEMA sc1;
+  RELEASE SAVEPOINT sp1;
+
+  CREATE SEQUENCE seq1;
+  CREATE TABLE sc1.s1(id int default(nextval('seq1')));
+  SELECT create_distributed_table('sc1.s1','id');
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+DROP SEQUENCE seq1;
+
+-- TEST6
+BEGIN;
+  SAVEPOINT sp1;
+    SAVEPOINT sp2;
+      CREATE SCHEMA sc1;
+    ROLLBACK TO SAVEPOINT sp2;
+  RELEASE SAVEPOINT sp1;
+
+  SET LOCAL citus.enable_metadata_sync TO off;
+  CREATE SCHEMA sc1;
+  SET LOCAL citus.enable_metadata_sync TO on;
+
+  CREATE TABLE sc1.s1(id int);
+  SELECT create_distributed_table('sc1.s1','id');
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+
+-- TEST7
+BEGIN;
+  SAVEPOINT sp1;
+    SAVEPOINT sp2;
+      CREATE SCHEMA sc1;
+    RELEASE SAVEPOINT sp2;
+  RELEASE SAVEPOINT sp1;
+
+  CREATE SEQUENCE seq1;
+  CREATE TABLE sc1.s1(id int default(nextval('seq1')));
+  SELECT create_distributed_table('sc1.s1','id');
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+DROP SEQUENCE seq1;
+
+-- TEST8
+BEGIN;
+  SAVEPOINT sp1;
+    SAVEPOINT sp2;
+      CREATE SCHEMA sc1;
+    RELEASE SAVEPOINT sp2;
+  ROLLBACK TO SAVEPOINT sp1;
+
+  SET LOCAL citus.enable_metadata_sync TO off;
+  CREATE SCHEMA sc1;
+  SET LOCAL citus.enable_metadata_sync TO on;
+
+  CREATE TABLE sc1.s1(id int);
+  SELECT create_distributed_table('sc1.s1','id');
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+
+-- TEST9
+BEGIN;
+  SAVEPOINT sp1;
+    SAVEPOINT sp2;
+      CREATE SCHEMA sc2;
+    ROLLBACK TO SAVEPOINT sp2;
+
+    SAVEPOINT sp3;
+      CREATE SCHEMA sc1;
+    RELEASE SAVEPOINT sp3;
+  RELEASE SAVEPOINT sp1;
+
+  CREATE SEQUENCE seq1;
+  CREATE TABLE sc1.s1(id int default(nextval('seq1')));
+  SELECT create_distributed_table('sc1.s1','id');
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+DROP SEQUENCE seq1;
+
+-- TEST10
+BEGIN;
+  SAVEPOINT sp1;
+    SAVEPOINT sp2;
+      CREATE SCHEMA sc2;
+    RELEASE SAVEPOINT sp2;
+    SAVEPOINT sp3;
+      CREATE SCHEMA sc3;
+      SAVEPOINT sp4;
+        CREATE SCHEMA sc1;
+      ROLLBACK TO SAVEPOINT sp4;
+    RELEASE SAVEPOINT sp3;
+  RELEASE SAVEPOINT sp1;
+
+  SET LOCAL citus.enable_metadata_sync TO off;
+  CREATE SCHEMA sc1;
+  SET LOCAL citus.enable_metadata_sync TO on;
+
+  CREATE TABLE sc1.s1(id int);
+  SELECT create_distributed_table('sc1.s1','id');
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+DROP SCHEMA sc2 CASCADE;
+DROP SCHEMA sc3 CASCADE;
+
+-- TEST11
+BEGIN;
+  SAVEPOINT sp1;
+    SAVEPOINT sp2;
+      CREATE SCHEMA sc2;
+    RELEASE SAVEPOINT sp2;
+    SAVEPOINT sp3;
+      CREATE SCHEMA sc3;
+      SAVEPOINT sp4;
+        CREATE SCHEMA sc1;
+      RELEASE SAVEPOINT sp4;
+    RELEASE SAVEPOINT sp3;
+  RELEASE SAVEPOINT sp1;
+
+  CREATE SEQUENCE seq1;
+  CREATE TABLE sc1.s1(id int default(nextval('seq1')));
+  SELECT create_distributed_table('sc1.s1','id');
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+DROP SCHEMA sc2 CASCADE;
+DROP SCHEMA sc3 CASCADE;
+DROP SEQUENCE seq1;
+
+-- TEST12
+BEGIN;
+  SAVEPOINT sp1;
+    SAVEPOINT sp2;
+      CREATE SCHEMA sc2;
+    RELEASE SAVEPOINT sp2;
+    SAVEPOINT sp3;
+      CREATE SCHEMA sc3;
+      SAVEPOINT sp4;
+        CREATE SEQUENCE seq1;
+        CREATE SCHEMA sc1;
+        CREATE TABLE sc1.s1(id int default(nextval('seq1')));
+        SELECT create_distributed_table('sc1.s1','id');
+      RELEASE SAVEPOINT sp4;
+    RELEASE SAVEPOINT sp3;
+  RELEASE SAVEPOINT sp1;
+COMMIT;
+DROP SCHEMA sc1 CASCADE;
+DROP SCHEMA sc2 CASCADE;
+DROP SCHEMA sc3 CASCADE;
+DROP SEQUENCE seq1;
+
+-- issue-6614
+CREATE FUNCTION create_schema_test() RETURNS void AS $$
+BEGIN
+    SET citus.create_object_propagation = 'deferred';
+    CREATE SCHEMA test_1;
+    CREATE TABLE test_1.test (
+        id bigserial constraint test_pk primary key,
+        creation_date timestamp constraint test_creation_date_df default timezone('UTC'::text, CURRENT_TIMESTAMP)  not null
+    );
+    PERFORM create_reference_table('test_1.test');
+	RETURN;
+END;
+$$ LANGUAGE plpgsql;
+SELECT create_schema_test();
+SELECT result FROM run_command_on_all_nodes($$ SELECT COUNT(*) = 1 FROM pg_dist_partition WHERE logicalrelid = 'test_1.test'::regclass $$);
+DROP FUNCTION create_schema_test;
+DROP SCHEMA test_1 CASCADE;
+
 -- Clean up the created schema
 SET client_min_messages TO WARNING;
 

src/test/regress/sql/pg16.sql

@@ -146,6 +146,63 @@ DROP DATABASE test_db;
 SELECT result FROM run_command_on_workers
 ($$DROP DATABASE test_db$$);
 SET search_path TO pg16;
+SET citus.next_shard_id TO 951000;
+
+-- Foreign table TRUNCATE trigger
+-- Relevant PG commit:
+-- https://github.com/postgres/postgres/commit/3b00a94
+SELECT 1 FROM citus_add_node('localhost', :master_port, groupid => 0);
+SET citus.use_citus_managed_tables TO ON;
+CREATE TABLE foreign_table_test (id integer NOT NULL, data text, a bigserial);
+INSERT INTO foreign_table_test VALUES (1, 'text_test');
+CREATE EXTENSION postgres_fdw;
+CREATE SERVER foreign_server
+        FOREIGN DATA WRAPPER postgres_fdw
+        OPTIONS (host 'localhost', port :'master_port', dbname 'regression');
+CREATE USER MAPPING FOR CURRENT_USER
+        SERVER foreign_server
+        OPTIONS (user 'postgres');
+CREATE FOREIGN TABLE foreign_table (
+        id integer NOT NULL,
+        data text,
+        a bigserial
+)
+        SERVER foreign_server
+        OPTIONS (schema_name 'pg16', table_name 'foreign_table_test');
+
+-- verify it's a Citus foreign table
+SELECT partmethod, repmodel FROM pg_dist_partition
+WHERE logicalrelid = 'foreign_table'::regclass ORDER BY logicalrelid;
+
+INSERT INTO foreign_table VALUES (2, 'test_2');
+INSERT INTO foreign_table_test VALUES (3, 'test_3');
+
+CREATE FUNCTION trigger_func() RETURNS trigger LANGUAGE plpgsql AS $$
+BEGIN
+	RAISE NOTICE 'trigger_func(%) called: action = %, when = %, level = %',
+		TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+	RETURN NULL;
+END;$$;
+
+CREATE FUNCTION trigger_func_on_shard() RETURNS trigger LANGUAGE plpgsql AS $$
+BEGIN
+	RAISE NOTICE 'trigger_func_on_shard(%) called: action = %, when = %, level = %',
+		TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+	RETURN NULL;
+END;$$;
+
+CREATE TRIGGER trig_stmt_before BEFORE TRUNCATE ON foreign_table
+	FOR EACH STATEMENT EXECUTE PROCEDURE trigger_func();
+SET citus.override_table_visibility TO off;
+CREATE TRIGGER trig_stmt_shard_before BEFORE TRUNCATE ON foreign_table_951001
+	FOR EACH STATEMENT EXECUTE PROCEDURE trigger_func_on_shard();
+RESET citus.override_table_visibility;
+
+SELECT * FROM foreign_table ORDER BY 1;
+TRUNCATE foreign_table;
+SELECT * FROM foreign_table ORDER BY 1;
+
+RESET citus.use_citus_managed_tables;
 
 --
 -- COPY FROM ... DEFAULT
@@ -388,6 +445,42 @@ REINDEX SYSTEM;
 SELECT result FROM run_command_on_workers
 ($$REINDEX SYSTEM$$);
 
+--
+-- random_normal() to provide normally-distributed random numbers
+-- adding here the same tests as the ones with random() in aggregate_support.sql
+-- Relevant PG commit: https://github.com/postgres/postgres/commit/38d8176
+--
+
+CREATE TABLE dist_table (dist_col int, agg_col numeric);
+SELECT create_distributed_table('dist_table', 'dist_col');
+
+CREATE TABLE ref_table (int_col int);
+SELECT create_reference_table('ref_table');
+
+-- Test the cases where the worker agg exec. returns no tuples.
+
+SELECT PERCENTILE_DISC(.25) WITHIN GROUP (ORDER BY agg_col)
+FROM (SELECT *, random_normal() FROM dist_table) a;
+
+SELECT PERCENTILE_DISC((2 > random_normal(stddev => 1, mean => 0))::int::numeric / 10)
+       WITHIN GROUP (ORDER BY agg_col)
+FROM dist_table
+LEFT JOIN ref_table ON TRUE;
+
+-- run the same queries after loading some data
+
+INSERT INTO dist_table VALUES (2, 11.2), (3, NULL), (6, 3.22), (3, 4.23), (5, 5.25),
+                              (4, 63.4), (75, NULL), (80, NULL), (96, NULL), (8, 1078), (0, 1.19);
+
+SELECT PERCENTILE_DISC(.25) WITHIN GROUP (ORDER BY agg_col)
+FROM (SELECT *, random_normal() FROM dist_table) a;
+
+SELECT PERCENTILE_DISC((2 > random_normal(stddev => 1, mean => 0))::int::numeric / 10)
+       WITHIN GROUP (ORDER BY agg_col)
+FROM dist_table
+LEFT JOIN ref_table ON TRUE;
+
 \set VERBOSITY terse
 SET client_min_messages TO ERROR;
+DROP EXTENSION postgres_fdw CASCADE;
 DROP SCHEMA pg16 CASCADE;

src/test/regress/sql/publication.sql

@@ -273,6 +273,110 @@ CREATE PUBLICATION pubdep FOR TABLES IN SCHEMA deptest;
 RESET citus.create_object_propagation;
 DROP SCHEMA deptest CASCADE;
 
+--
+-- PG16 allows publications with schema and table of the same schema.
+-- backpatched to PG15
+-- Relevant PG commit: https://github.com/postgres/postgres/commit/13a185f
+--
+
+CREATE SCHEMA publication2;
+CREATE TABLE publication2.test1 (id int);
+SELECT create_distributed_table('publication2.test1', 'id');
+
+-- should be able to create publication with schema and table of the same
+-- schema
+CREATE PUBLICATION testpub_for_tbl_schema FOR TABLES IN SCHEMA publication2, TABLE publication2.test1;
+SELECT DISTINCT c FROM (
+  SELECT unnest(result::text[]) c
+  FROM run_command_on_workers($$
+    SELECT array_agg(c) FROM (SELECT c FROM unnest(activate_node_snapshot()) c WHERE c LIKE '%CREATE PUBLICATION%' AND c LIKE '%testpub_for_tbl_schema%' ORDER BY 1) s$$)
+  ORDER BY c) s;
+
+CREATE TABLE publication.test2 (id int);
+SELECT create_distributed_table('publication.test2', 'id');
+ALTER PUBLICATION testpub_for_tbl_schema ADD TABLE publication.test2;
+SELECT DISTINCT c FROM (
+  SELECT unnest(result::text[]) c
+  FROM run_command_on_workers($$
+    SELECT array_agg(c) FROM (SELECT c FROM unnest(activate_node_snapshot()) c WHERE c LIKE '%CREATE PUBLICATION%' AND c LIKE '%testpub_for_tbl_schema%' ORDER BY 1) s$$)
+  ORDER BY c) s;
+
+-- should be able to have publication2 schema and its new table test2 in testpub_for_tbl_schema publication
+ALTER TABLE test2 SET SCHEMA publication2;
+
+-- should be able to add a table of the same schema to the schema publication
+CREATE TABLE publication2.test3 (x int primary key, y int, "column-1" int);
+SELECT create_distributed_table('publication2.test3', 'x');
+ALTER PUBLICATION testpub_for_tbl_schema ADD TABLE publication2.test3;
+SELECT DISTINCT c FROM (
+  SELECT unnest(result::text[]) c
+  FROM run_command_on_workers($$
+    SELECT array_agg(c) FROM (SELECT c FROM unnest(activate_node_snapshot()) c WHERE c LIKE '%CREATE PUBLICATION%' AND c LIKE '%testpub_for_tbl_schema%' ORDER BY 1) s$$)
+  ORDER BY c) s;
+
+-- should be able to drop the table
+ALTER PUBLICATION testpub_for_tbl_schema DROP TABLE publication2.test3;
+SELECT DISTINCT c FROM (
+  SELECT unnest(result::text[]) c
+  FROM run_command_on_workers($$
+    SELECT array_agg(c) FROM (SELECT c FROM unnest(activate_node_snapshot()) c WHERE c LIKE '%CREATE PUBLICATION%' AND c LIKE '%testpub_for_tbl_schema%' ORDER BY 1) s$$)
+  ORDER BY c) s;
+
+DROP PUBLICATION testpub_for_tbl_schema;
+CREATE PUBLICATION testpub_for_tbl_schema FOR TABLES IN SCHEMA publication2;
+-- should be able to set publication with schema and table of the same schema
+ALTER PUBLICATION testpub_for_tbl_schema SET TABLES IN SCHEMA publication2, TABLE publication2.test1 WHERE (id < 99);
+SELECT DISTINCT c FROM (
+  SELECT unnest(result::text[]) c
+  FROM run_command_on_workers($$
+    SELECT array_agg(c) FROM (SELECT c FROM unnest(activate_node_snapshot()) c WHERE c LIKE '%CREATE PUBLICATION%' AND c LIKE '%testpub_for_tbl_schema%' ORDER BY 1) s$$)
+  ORDER BY c) s;
+
+-- test that using column list for table is disallowed if any schemas are
+-- part of the publication
+DROP PUBLICATION testpub_for_tbl_schema;
+
+-- failure - cannot use column list and schema together
+CREATE PUBLICATION testpub_for_tbl_schema FOR TABLES IN SCHEMA publication2, TABLE publication2.test3(y);
+
+-- ok - only publish schema
+CREATE PUBLICATION testpub_for_tbl_schema FOR TABLES IN SCHEMA publication2;
+SELECT DISTINCT c FROM (
+  SELECT unnest(result::text[]) c
+  FROM run_command_on_workers($$
+    SELECT array_agg(c) FROM (SELECT c FROM unnest(activate_node_snapshot()) c WHERE c LIKE '%CREATE PUBLICATION%' AND c LIKE '%testpub_for_tbl_schema%' ORDER BY 1) s$$)
+  ORDER BY c) s;
+
+-- failure - add a table with column list when there is already a schema in the
+-- publication
+ALTER PUBLICATION testpub_for_tbl_schema ADD TABLE publication2.test3(y);
+
+-- ok - only publish table with column list
+ALTER PUBLICATION testpub_for_tbl_schema SET TABLE publication2.test3(y);
+SELECT DISTINCT c FROM (
+  SELECT unnest(result::text[]) c
+  FROM run_command_on_workers($$
+    SELECT array_agg(c) FROM (SELECT c FROM unnest(activate_node_snapshot()) c WHERE c LIKE '%CREATE PUBLICATION%' AND c LIKE '%testpub_for_tbl_schema%' ORDER BY 1) s$$)
+  ORDER BY c) s;
+
+-- failure - specify a schema when there is already a column list in the
+-- publication
+ALTER PUBLICATION testpub_for_tbl_schema ADD TABLES IN SCHEMA publication2;
+
+-- failure - cannot SET column list and schema together
+ALTER PUBLICATION testpub_for_tbl_schema SET TABLES IN SCHEMA publication2, TABLE publication2.test3(y);
+
+-- ok - drop table
+ALTER PUBLICATION testpub_for_tbl_schema DROP TABLE publication2.test3;
+SELECT DISTINCT c FROM (
+  SELECT unnest(result::text[]) c
+  FROM run_command_on_workers($$
+    SELECT array_agg(c) FROM (SELECT c FROM unnest(activate_node_snapshot()) c WHERE c LIKE '%CREATE PUBLICATION%' AND c LIKE '%testpub_for_tbl_schema%' ORDER BY 1) s$$)
+  ORDER BY c) s;
+
+-- failure - cannot ADD column list and schema together
+ALTER PUBLICATION testpub_for_tbl_schema ADD TABLES IN SCHEMA publication2, TABLE publication2.test3(y);
+
 -- make sure we can sync all the publication metadata
 SELECT start_metadata_sync_to_all_nodes();
 
@@ -280,8 +384,10 @@ DROP PUBLICATION pubdep;
 DROP PUBLICATION "pub-mix";
 DROP PUBLICATION pubtables;
 DROP PUBLICATION pubpartitioned;
+DROP PUBLICATION testpub_for_tbl_schema;
 
 SET client_min_messages TO ERROR;
 DROP SCHEMA publication CASCADE;
 DROP SCHEMA "publication-1" CASCADE;
 DROP SCHEMA citus_schema_1 CASCADE;
+DROP SCHEMA publication2 CASCADE;