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-rw-r--r--src/backend/catalog/index.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 39ba4869af..83aae7abad 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -2942,7 +2942,8 @@ reindex_relation(Oid relid, int flags)
/*
* Open and lock the relation. ShareLock is sufficient since we only need
- * to prevent schema and data changes in it.
+ * to prevent schema and data changes in it. The lock level used here
+ * should match ReindexTable().
*/
rel = heap_open(relid, ShareLock);