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Use RelationGetIndexList instead of scanning pg_index

pull/5192/head
Onur Tirtir 2021-08-18 01:09:12 +03:00
parent fa9933daf3
commit 549ca4de6d
2 changed files with 20 additions and 26 deletions
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40
src/backend/distributed/commands/index.c
View File

@ -306,37 +306,25 @@ ExecuteFunctionOnEachTableIndex(Oid relationId, PGIndexProcessor pgIndexProcesso
int indexFlags)
{
List *result = NIL;
ScanKeyData scanKey[1];
int scanKeyCount = 1;
PushOverrideEmptySearchPath(CurrentMemoryContext);
/* open system catalog and scan all indexes that belong to this table */
Relation pgIndex = table_open(IndexRelationId, AccessShareLock);
ScanKeyInit(&scanKey[0], Anum_pg_index_indrelid,
BTEqualStrategyNumber, F_OIDEQ, relationId);
SysScanDesc scanDescriptor = systable_beginscan(pgIndex,
IndexIndrelidIndexId, true, /* indexOK */
NULL, scanKeyCount, scanKey);
HeapTuple heapTuple = systable_getnext(scanDescriptor);
while (HeapTupleIsValid(heapTuple))
Relation relation = RelationIdGetRelation(relationId);
List *indexIdList = RelationGetIndexList(relation);
Oid indexId = InvalidOid;
foreach_oid(indexId, indexIdList)
{
Form_pg_index indexForm = (Form_pg_index) GETSTRUCT(heapTuple);
pgIndexProcessor(indexForm, &result, indexFlags);
HeapTuple indexTuple = SearchSysCache1(INDEXRELID, ObjectIdGetDatum(indexId));
if (!HeapTupleIsValid(indexTuple))
{
ereport(ERROR, (errmsg("cache lookup failed for index with oid %u",
indexId)));
}
heapTuple = systable_getnext(scanDescriptor);
Form_pg_index indexForm = (Form_pg_index) GETSTRUCT(indexTuple);
pgIndexProcessor(indexForm, &result, indexFlags);
ReleaseSysCache(indexTuple);
}
/* clean up scan and close system catalog */
systable_endscan(scanDescriptor);
table_close(pgIndex, AccessShareLock);
/* revert back to original search_path */
PopOverrideSearchPath();
RelationClose(relation);
return result;
}

6
src/backend/distributed/operations/node_protocol.c
View File

@ -798,6 +798,9 @@ void
GatherIndexAndConstraintDefinitionList(Form_pg_index indexForm, List **indexDDLEventList,
int indexFlags)
{
/* generate fully-qualified names */
PushOverrideEmptySearchPath(CurrentMemoryContext);
Oid indexId = indexForm->indexrelid;
bool indexImpliedByConstraint = IndexImpliedByAConstraint(indexForm);
@ -845,6 +848,9 @@ GatherIndexAndConstraintDefinitionList(Form_pg_index indexForm, List **indexDDLE
*indexDDLEventList = list_concat(*indexDDLEventList,
alterIndexStatisticsCommands);
}
/* revert back to original search_path */
PopOverrideSearchPath();
}