From b5e078c4d352f0130b2d6436e05f6cd51da2ffe4 Mon Sep 17 00:00:00 2001
From: congqixia <congqi.xia@zilliz.com>
Date: Wed, 31 Jan 2024 18:55:04 +0800
Subject: [PATCH] enhance: Remove current stats after RollStats action (#30391)

See also #27675

BloomFilterSet.current shall be reset after RollStats, otherwise it will
keep tracking whole segment data causing the false positive ratio larger
than expected.

Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>
---
 internal/datanode/metacache/bloom_filter_set.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/internal/datanode/metacache/bloom_filter_set.go b/internal/datanode/metacache/bloom_filter_set.go
index 6765f1b168..31498b6583 100644
--- a/internal/datanode/metacache/bloom_filter_set.go
+++ b/internal/datanode/metacache/bloom_filter_set.go
@@ -96,6 +96,7 @@ func (bfs *BloomFilterSet) Roll(newStats ...*storage.PrimaryKeyStats) {
 				MinPK:    stats.MinPk,
 			}
 		})...)
+		bfs.current = nil
 	}
 }