Fix Some commands forgot to mark meta track.

Issue apache#504

It will make unstable cases failed as:
ERROR:  duplicate key value violates unique constraint
"pg_statlastop_classid_objid_staactionname_index"

Call MetaTrackDropObject in functions:
  RemoveSchemaById
  RemovePublicationById
  RemovePolicyById

Authored-by: Zhang Mingli avamingli@gmail.com

src/backend/commands/policy.c

@@ -391,6 +391,13 @@ RemovePolicyById(Oid policy_id)
 
 	systable_endscan(sscan);
 
+	/*
+	 * CBDB GITHUB ISSUE:
+	 * https://github.com/cloudberrydb/cloudberrydb/issues/504
+	 */
+	if (Gp_role == GP_ROLE_DISPATCH)
+		MetaTrackDropObject(PolicyRelationId, policy_id);
+
 	/*
 	 * Note that, unlike some of the other flags in pg_class, relrowsecurity
 	 * is not just an indication of if policies exist.  When relrowsecurity is

src/backend/commands/publicationcmds.c

@@ -573,6 +573,13 @@ RemovePublicationById(Oid pubid)
 	if (pubform->puballtables)
 		CacheInvalidateRelcacheAll();
 
+	/*
+	 * CBDB GITHUB ISSUE:
+	 * https://github.com/cloudberrydb/cloudberrydb/issues/504
+	 */
+	if (Gp_role == GP_ROLE_DISPATCH)
+		MetaTrackDropObject(PublicationRelationId, pubid);
+
 	CatalogTupleDelete(rel, &tup->t_self);
 
 	ReleaseSysCache(tup);

src/backend/commands/schemacmds.c

@@ -325,6 +325,13 @@ RemoveSchemaById(Oid schemaOid)
 
 	CatalogTupleDelete(relation, &tup->t_self);
 
+	/*
+	 * CBDB GITHUB ISSUE:
+	 * https://github.com/cloudberrydb/cloudberrydb/issues/504
+	 */
+	if (Gp_role == GP_ROLE_DISPATCH)
+		MetaTrackDropObject(NamespaceRelationId, schemaOid);
+
 	ReleaseSysCache(tup);
 
 	table_close(relation, RowExclusiveLock);

src/test/regress/expected/bfv_meta_track.out

@@ -0,0 +1,60 @@
+--
+--CBDB GITHUB ISSUE:
+--https://github.com/cloudberrydb/cloudberrydb/issues/504 
+--
+create schema bfv_meta_track;
+set search_path to bfv_meta_track;
+select count(*) from pg_stat_last_operation join
+  pg_namespace on pg_namespace.oid = pg_stat_last_operation.objid
+  where pg_namespace.nspname = 'bfv_meta_track';
+ count 
+-------
+     1
+(1 row)
+
+-- test drop popicy
+create table t1(a int);
+NOTICE:  Table doesn't have 'DISTRIBUTED BY' clause -- Using column named 'a' as the Cloudberry Database data distribution key for this table.
+HINT:  The 'DISTRIBUTED BY' clause determines the distribution of data. Make sure column(s) chosen are the optimal data distribution key to minimize skew.
+create policy p1 on t1 using (a % 2 = 0);
+select count(*) from pg_stat_last_operation a join pg_policy b on b.oid = a.objid where b.polname = 'p1' and b.polrelid ='t1'::regclass::oid;
+ count 
+-------
+     1
+(1 row)
+
+drop policy p1 on t1;
+select count(*) from pg_stat_last_operation a join pg_policy b on b.oid = a.objid where b.polname = 'p1' and b.polrelid ='t1'::regclass::oid;
+ count 
+-------
+     0
+(1 row)
+
+--test drop publication
+-- start_ignore
+create publication pub1;
+-- end_ignore
+select count(*) from pg_stat_last_operation a join pg_publication b on b.oid = a.objid where b.pubname = 'pub1';
+ count 
+-------
+     1
+(1 row)
+
+drop publication pub1;
+select count(*) from pg_stat_last_operation a join pg_publication b on b.oid = a.objid where b.pubname = 'pub1';
+ count 
+-------
+     0
+(1 row)
+
+drop schema bfv_meta_track cascade;
+NOTICE:  drop cascades to table t1
+-- test drop schema
+select count(*) from pg_stat_last_operation join
+  pg_namespace on pg_namespace.oid = pg_stat_last_operation.objid
+  where pg_namespace.nspname = 'bfv_meta_track';
+ count 
+-------
+     0
+(1 row)
+

src/test/regress/greenplum_schedule

@@ -327,4 +327,6 @@ test: motion_socket
 # subtransaction overflow test
 test: subtrx_overflow
 
+test: bfv_meta_track
+
 # end of tests

src/test/regress/sql/bfv_meta_track.sql

@@ -0,0 +1,31 @@
+--
+--CBDB GITHUB ISSUE:
+--https://github.com/cloudberrydb/cloudberrydb/issues/504 
+--
+
+create schema bfv_meta_track;
+set search_path to bfv_meta_track;
+select count(*) from pg_stat_last_operation join
+  pg_namespace on pg_namespace.oid = pg_stat_last_operation.objid
+  where pg_namespace.nspname = 'bfv_meta_track';
+
+-- test drop popicy
+create table t1(a int);
+create policy p1 on t1 using (a % 2 = 0);
+select count(*) from pg_stat_last_operation a join pg_policy b on b.oid = a.objid where b.polname = 'p1' and b.polrelid ='t1'::regclass::oid;
+drop policy p1 on t1;
+select count(*) from pg_stat_last_operation a join pg_policy b on b.oid = a.objid where b.polname = 'p1' and b.polrelid ='t1'::regclass::oid;
+
+--test drop publication
+-- start_ignore
+create publication pub1;
+-- end_ignore
+select count(*) from pg_stat_last_operation a join pg_publication b on b.oid = a.objid where b.pubname = 'pub1';
+drop publication pub1;
+select count(*) from pg_stat_last_operation a join pg_publication b on b.oid = a.objid where b.pubname = 'pub1';
+
+drop schema bfv_meta_track cascade;
+-- test drop schema
+select count(*) from pg_stat_last_operation join
+  pg_namespace on pg_namespace.oid = pg_stat_last_operation.objid
+  where pg_namespace.nspname = 'bfv_meta_track';