Set relispartition correctly for index partitions
Oversight in commit 8b08f7d4820f: pg_class.relispartition was not being set for index partitions, which is a bit odd, and was also causing the code to unnecessarily call has_superclass() when simply checking the flag was enough. Author: Álvaro Herrera Reported-by: Amit Langote Discussion: https://postgr.es/m/12085bc4-0bc6-0f3a-4c43-57fe0681772b@lab.ntt.co.jp
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@ -933,6 +933,7 @@ index_create(Relation heapRelation,
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indexRelation->rd_rel->relowner = heapRelation->rd_rel->relowner;
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indexRelation->rd_rel->relam = accessMethodObjectId;
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indexRelation->rd_rel->relhasoids = false;
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indexRelation->rd_rel->relispartition = OidIsValid(parentIndexRelid);
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/*
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* store index's pg_class entry
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@ -490,6 +490,8 @@ static ObjectAddress ATExecAttachPartitionIdx(List **wqueue, Relation rel,
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static void validatePartitionedIndex(Relation partedIdx, Relation partedTbl);
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static void refuseDupeIndexAttach(Relation parentIdx, Relation partIdx,
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Relation partitionTbl);
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static void update_relispartition(Relation classRel, Oid relationId,
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bool newval);
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/* ----------------------------------------------------------------
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@ -14405,10 +14407,11 @@ AttachPartitionEnsureIndexes(Relation rel, Relation attachrel)
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*/
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for (i = 0; i < list_length(attachRelIdxs); i++)
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{
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Oid cldIdxId = RelationGetRelid(attachrelIdxRels[i]);
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Oid cldConstrOid = InvalidOid;
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/* does this index have a parent? if so, can't use it */
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if (has_superclass(RelationGetRelid(attachrelIdxRels[i])))
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if (attachrelIdxRels[i]->rd_rel->relispartition)
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continue;
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if (CompareIndexInfo(attachInfos[i], info,
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@ -14429,7 +14432,7 @@ AttachPartitionEnsureIndexes(Relation rel, Relation attachrel)
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{
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cldConstrOid =
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get_relation_idx_constraint_oid(RelationGetRelid(attachrel),
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RelationGetRelid(attachrelIdxRels[i]));
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cldIdxId);
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/* no dice */
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if (!OidIsValid(cldConstrOid))
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continue;
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@ -14439,6 +14442,7 @@ AttachPartitionEnsureIndexes(Relation rel, Relation attachrel)
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IndexSetParentIndex(attachrelIdxRels[i], idx);
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if (OidIsValid(constraintOid))
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ConstraintSetParentConstraint(cldConstrOid, constraintOid);
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update_relispartition(NULL, cldIdxId, true);
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found = true;
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break;
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}
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@ -14659,7 +14663,6 @@ ATExecDetachPartition(Relation rel, RangeVar *name)
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((Form_pg_class) GETSTRUCT(newtuple))->relispartition = false;
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CatalogTupleUpdate(classRel, &newtuple->t_self, newtuple);
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heap_freetuple(newtuple);
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heap_close(classRel, RowExclusiveLock);
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if (OidIsValid(defaultPartOid))
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{
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@ -14692,8 +14695,10 @@ ATExecDetachPartition(Relation rel, RangeVar *name)
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idx = index_open(idxid, AccessExclusiveLock);
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IndexSetParentIndex(idx, InvalidOid);
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update_relispartition(classRel, idxid, false);
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relation_close(idx, AccessExclusiveLock);
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}
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heap_close(classRel, RowExclusiveLock);
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/*
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* Invalidate the parent's relcache so that the partition is no longer
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@ -14815,8 +14820,8 @@ ATExecAttachPartitionIdx(List **wqueue, Relation parentIdx, RangeVar *name)
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ObjectAddressSet(address, RelationRelationId, RelationGetRelid(partIdx));
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/* Silently do nothing if already in the right state */
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currParent = !has_superclass(partIdxId) ? InvalidOid :
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get_partition_parent(partIdxId);
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currParent = partIdx->rd_rel->relispartition ?
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get_partition_parent(partIdxId) : InvalidOid;
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if (currParent != RelationGetRelid(parentIdx))
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{
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IndexInfo *childInfo;
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@ -14909,6 +14914,7 @@ ATExecAttachPartitionIdx(List **wqueue, Relation parentIdx, RangeVar *name)
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IndexSetParentIndex(partIdx, RelationGetRelid(parentIdx));
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if (OidIsValid(constraintOid))
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ConstraintSetParentConstraint(cldConstrId, constraintOid);
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update_relispartition(NULL, partIdxId, true);
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pfree(attmap);
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@ -15036,8 +15042,7 @@ validatePartitionedIndex(Relation partedIdx, Relation partedTbl)
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* If this index is in turn a partition of a larger index, validating it
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* might cause the parent to become valid also. Try that.
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*/
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if (updated &&
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has_superclass(RelationGetRelid(partedIdx)))
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if (updated && partedIdx->rd_rel->relispartition)
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{
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Oid parentIdxId,
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parentTblId;
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@ -15059,3 +15064,35 @@ validatePartitionedIndex(Relation partedIdx, Relation partedTbl)
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relation_close(parentTbl, AccessExclusiveLock);
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}
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}
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/*
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* Update the relispartition flag of the given relation to the given value.
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*
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* classRel is the pg_class relation, already open and suitably locked.
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* It can be passed as NULL, in which case it's opened and closed locally.
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*/
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static void
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update_relispartition(Relation classRel, Oid relationId, bool newval)
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{
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HeapTuple tup;
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HeapTuple newtup;
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Form_pg_class classForm;
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bool opened = false;
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if (classRel == NULL)
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{
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classRel = heap_open(RelationRelationId, RowExclusiveLock);
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opened = true;
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}
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tup = SearchSysCache1(RELOID, ObjectIdGetDatum(relationId));
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newtup = heap_copytuple(tup);
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classForm = (Form_pg_class) GETSTRUCT(newtup);
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classForm->relispartition = newval;
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CatalogTupleUpdate(classRel, &tup->t_self, newtup);
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heap_freetuple(newtup);
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ReleaseSysCache(tup);
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if (opened)
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heap_close(classRel, RowExclusiveLock);
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}
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