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Diffstat (limited to 'src/backend/catalog/index.c')
| -rw-r--r-- | src/backend/catalog/index.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c index fc6caaacef1..bb90fd38113 100644 --- a/src/backend/catalog/index.c +++ b/src/backend/catalog/index.c @@ -2018,6 +2018,15 @@ index_drop(Oid indexId, bool concurrent, bool concurrent_lock_mode) LOCKMODE lockmode; /* + * A temporary relation uses a non-concurrent DROP. Other backends can't + * access a temporary relation, so there's no harm in grabbing a stronger + * lock (see comments in RemoveRelations), and a non-concurrent DROP is + * more efficient. + */ + Assert(get_rel_persistence(indexId) != RELPERSISTENCE_TEMP || + (!concurrent && !concurrent_lock_mode)); + + /* * To drop an index safely, we must grab exclusive lock on its parent * table. Exclusive lock on the index alone is insufficient because * another backend might be about to execute a query on the parent table. |