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-rw-r--r--src/backend/access/nbtree/nbtree.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/backend/access/nbtree/nbtree.c b/src/backend/access/nbtree/nbtree.c
index 8fa6ac7296b..c822b49a710 100644
--- a/src/backend/access/nbtree/nbtree.c
+++ b/src/backend/access/nbtree/nbtree.c
@@ -853,6 +853,7 @@ _bt_vacuum_needs_cleanup(IndexVacuumInfo *info)
prev_num_heap_tuples = metad->btm_last_cleanup_num_heap_tuples;
if (cleanup_scale_factor <= 0 ||
+ info->num_heap_tuples < 0 ||
prev_num_heap_tuples <= 0 ||
(info->num_heap_tuples - prev_num_heap_tuples) /
prev_num_heap_tuples >= cleanup_scale_factor)