No change in logic, just mark sequences as sync only

src/backend/distributed/commands/create_distributed_table.c

@@ -670,6 +670,7 @@ MarkSequenceDistributedAndPropagateDependencies(Oid sequenceOid)
 	ObjectAddressSet(sequenceAddress, RelationRelationId, sequenceOid);
 	EnsureDependenciesExistOnAllNodes(&sequenceAddress);
 	MarkObjectDistributed(&sequenceAddress);
+	UpdateMetadataSyncedOnlyForDistObject(&sequenceAddress);
 }
 
 

src/backend/distributed/metadata/metadata_cache.c

@@ -1270,6 +1270,57 @@ LookupDistObjectCacheEntry(Oid classid, Oid objid, int32 objsubid)
 }
 
 
+/*
+ * TODO: make the column enum, not bool for future extensibility.
+ * TODO: probably better to move distobject.c
+ */
+void
+UpdateMetadataSyncedOnlyForDistObject(const ObjectAddress *distAddress, bool metadataSync)
+{
+	ScanKeyData pgDistObjectKey[3];
+	Relation pgDistObjectRel = table_open(DistObjectRelationId(), AccessShareLock);
+	TupleDesc pgDistObjectTupleDesc = RelationGetDescr(pgDistObjectRel);
+
+	ScanKeyInit(&pgDistObjectKey[0], Anum_pg_dist_object_classid,
+				BTEqualStrategyNumber, F_OIDEQ, ObjectIdGetDatum(distAddress->classId));
+	ScanKeyInit(&pgDistObjectKey[1], Anum_pg_dist_object_objid,
+				BTEqualStrategyNumber, F_OIDEQ, ObjectIdGetDatum(distAddress->objectId));
+	ScanKeyInit(&pgDistObjectKey[2], Anum_pg_dist_object_objsubid,
+				BTEqualStrategyNumber, F_INT4EQ, Int32GetDatum(distAddress->objectSubId));
+
+	SysScanDesc pgDistObjectScan = systable_beginscan(pgDistObjectRel,
+													  DistObjectPrimaryKeyIndexId(),
+													  true, NULL, 3, pgDistObjectKey);
+	HeapTuple pgDistObjectTup = systable_getnext(pgDistObjectScan);
+
+	if (HeapTupleIsValid(pgDistObjectTup))
+	{
+		Datum values[Natts_pg_dist_object];
+		bool isnull[Natts_pg_dist_object];
+		bool replace[Natts_pg_dist_object];
+		memset(replace, 0, sizeof(replace));
+
+		replace[Anum_pg_dist_object_sync_metadata_node - 1] = true;
+
+		/* update the colocationId to the new one */
+		values[Anum_pg_dist_object_sync_metadata_node - 1] = BoolGetDatum(metadataSync);
+
+		isnull[Anum_pg_dist_object_sync_metadata_node - 1] = false;
+
+		pgDistObjectTup = heap_modify_tuple(pgDistObjectTup, pgDistObjectTupleDesc,
+											values, isnull,
+											replace);
+
+		CatalogTupleUpdate(pgDistObjectRel, &pgDistObjectTup->t_self, pgDistObjectTup);
+		CitusInvalidateRelcacheByRelid(DistObjectRelationId());
+	}
+
+	systable_endscan(pgDistObjectScan);
+	table_close(pgDistObjectRel, NoLock);
+	CommandCounterIncrement();
+}
+
+
 /*
  * BuildCitusTableCacheEntry is a helper routine for
  * LookupCitusTableCacheEntry() for building the cache contents.

src/backend/distributed/sql/citus--10.1-1--10.2-1.sql

@@ -8,6 +8,8 @@ GRANT ALL ON FUNCTION pg_catalog.worker_record_sequence_dependency(regclass,regc
 -- the same shard cannot have placements on different nodes
 ALTER TABLE pg_catalog.pg_dist_placement ADD CONSTRAINT placement_shardid_groupid_unique_index UNIQUE (shardid, groupid);
 
+ALTER TABLE citus.pg_dist_object ADD COLUMN sync_to_metadata_nodes bool;
+
 #include "udfs/stop_metadata_sync_to_node/10.2-1.sql"
 #include "../../columnar/sql/columnar--10.1-1--10.2-1.sql"
 #include "udfs/citus_internal_add_partition_metadata/10.2-1.sql";

src/include/distributed/metadata/pg_dist_object.h

@@ -49,7 +49,7 @@ typedef FormData_pg_dist_object *Form_pg_dist_object;
  *      compiler constants for pg_dist_object
  * ----------------
  */
-#define Natts_pg_dist_object 8
+#define Natts_pg_dist_object 9
 #define Anum_pg_dist_object_classid 1
 #define Anum_pg_dist_object_objid 2
 #define Anum_pg_dist_object_objsubid 3
@@ -58,5 +58,6 @@ typedef FormData_pg_dist_object *Form_pg_dist_object;
 #define Anum_pg_dist_object_object_args 6
 #define Anum_pg_dist_object_distribution_argument_index 7
 #define Anum_pg_dist_object_colocationid 8
+#define Anum_pg_dist_object_sync_metadata_node 9
 
 #endif /* PG_DIST_OBJECT_H */

src/include/distributed/metadata_cache.h

@@ -160,6 +160,8 @@ extern CitusTableCacheEntry * GetCitusTableCacheEntry(Oid distributedRelationId)
 extern CitusTableCacheEntry * LookupCitusTableCacheEntry(Oid relationId);
 extern DistObjectCacheEntry * LookupDistObjectCacheEntry(Oid classid, Oid objid, int32
 														 objsubid);
+extern void UpdateMetadataSyncedOnlyForDistObject(const ObjectAddress *distAddress,
+												  bool metadataSync);
 extern int32 GetLocalGroupId(void);
 extern void CitusTableCacheFlushInvalidatedEntries(void);
 extern Oid LookupShardRelationFromCatalog(int64 shardId, bool missing_ok);