From 4df444ef25c5c353f2e98602fd3f90728cedfe92 Mon Sep 17 00:00:00 2001
From: XuanYang-cn <xuan.yang@zilliz.com>
Date: Thu, 26 Dec 2024 18:58:56 +0800
Subject: [PATCH] fix: Aviod add negative missing count (#38748)

See also: #34665

Signed-off-by: yangxuan <xuan.yang@zilliz.com>
---
 internal/datanode/compaction/compactor_common.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/internal/datanode/compaction/compactor_common.go b/internal/datanode/compaction/compactor_common.go
index d21b681154..2ff9c15b4e 100644
--- a/internal/datanode/compaction/compactor_common.go
+++ b/internal/datanode/compaction/compactor_common.go
@@ -84,7 +84,11 @@ func (filter *EntityFilter) GetDeltalogDeleteCount() int {
 }
 
 func (filter *EntityFilter) GetMissingDeleteCount() int {
-	return filter.GetDeltalogDeleteCount() - filter.GetDeletedCount()
+	diff := filter.GetDeltalogDeleteCount() - filter.GetDeletedCount()
+	if diff <= 0 {
+		diff = 0
+	}
+	return diff
 }
 
 func (filter *EntityFilter) isEntityDeleted(pk interface{}, pkTs typeutil.Timestamp) bool {