From 9fa55e682ae53daccefff6775e1cfd6f7fe86b67 Mon Sep 17 00:00:00 2001
From: Sergey Soldatov <ssoldatov@cloudera.com>
Date: Wed, 30 Aug 2023 22:07:35 -0700
Subject: [PATCH] HBASE-28055 Performance improvement for scan over several
 stores.

---
 .../org/apache/hadoop/hbase/regionserver/StoreScanner.java    | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreScanner.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreScanner.java
index 2b6ac583ff66..c12307841a2b 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreScanner.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreScanner.java
@@ -935,7 +935,9 @@ protected boolean trySkipToNextColumn(Cell cell) throws IOException {
     // We need this check because it may happen that the new scanner that we get
     // during heap.next() is requiring reseek due of fake KV previously generated for
     // ROWCOL bloom filter optimization. See HBASE-19863 for more details
-    if (useRowColBloom && nextCell != null && matcher.compareKeyForNextColumn(nextCell, cell) < 0) {
+    if (
+      useRowColBloom && nextCell != null && cell.getTimestamp() == PrivateConstants.OLDEST_TIMESTAMP
+    ) {
       return false;
     }
     return true;