diff options
Diffstat (limited to 'src/backend/utils/cache/partcache.c')
| -rw-r--r-- | src/backend/utils/cache/partcache.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/backend/utils/cache/partcache.c b/src/backend/utils/cache/partcache.c index a6388d980ed..21e60f0c5e8 100644 --- a/src/backend/utils/cache/partcache.c +++ b/src/backend/utils/cache/partcache.c @@ -341,6 +341,7 @@ generate_partition_qual(Relation rel) bool isnull; List *my_qual = NIL, *result = NIL; + Oid parentrelid; Relation parent; /* Guard against stack overflow due to overly deep partition tree */ @@ -350,9 +351,14 @@ generate_partition_qual(Relation rel) if (rel->rd_partcheckvalid) return copyObject(rel->rd_partcheck); - /* Grab at least an AccessShareLock on the parent table */ - parent = relation_open(get_partition_parent(RelationGetRelid(rel)), - AccessShareLock); + /* + * Grab at least an AccessShareLock on the parent table. Must do this + * even if the partition has been partially detached, because transactions + * concurrent with the detach might still be trying to use a partition + * descriptor that includes it. + */ + parentrelid = get_partition_parent(RelationGetRelid(rel), true); + parent = relation_open(parentrelid, AccessShareLock); /* Get pg_class.relpartbound */ tuple = SearchSysCache1(RELOID, RelationGetRelid(rel)); |