(hbase) branch branch-3 updated: HBASE-29493 Triage TestBucketCacheRefCnt.testInBucketCache intermittent failure caused by RAMCache draining in between (#7205)

[wchevreuil]

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wchevreuil pushed a commit to branch branch-3
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The following commit(s) were added to refs/heads/branch-3 by this push:
     new 4d2ce50de37 HBASE-29493 Triage TestBucketCacheRefCnt.testInBucketCache 
intermittent failure caused by RAMCache draining in between (#7205)
4d2ce50de37 is described below

commit 4d2ce50de371bcd3c04a6ba4d30ecf115d0cbe8a
Author: Umesh <9414umeshku...@gmail.com>
AuthorDate: Fri Aug 8 17:49:22 2025 +0530

    HBASE-29493 Triage TestBucketCacheRefCnt.testInBucketCache intermittent 
failure caused by RAMCache draining in between (#7205)
    
    Signed-off-by: Wellington Chevreuil <wchevre...@apache.org>
---
 .../hadoop/hbase/io/hfile/bucket/TestBucketCacheRefCnt.java      | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git 
a/hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/bucket/TestBucketCacheRefCnt.java
 
b/hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/bucket/TestBucketCacheRefCnt.java
index e71817e6a3f..4ee3f37819f 100644
--- 
a/hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/bucket/TestBucketCacheRefCnt.java
+++ 
b/hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/bucket/TestBucketCacheRefCnt.java
@@ -32,6 +32,7 @@ import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicReference;
 import org.apache.hadoop.hbase.HBaseClassTestRule;
 import org.apache.hadoop.hbase.HBaseConfiguration;
+import org.apache.hadoop.hbase.Waiter;
 import org.apache.hadoop.hbase.io.ByteBuffAllocator;
 import org.apache.hadoop.hbase.io.hfile.BlockCacheKey;
 import org.apache.hadoop.hbase.io.hfile.BlockCacheUtil;
@@ -229,6 +230,10 @@ public class TestBucketCacheRefCnt {
       cache.cacheBlock(key, blk);
       assertTrue(blk.refCnt() == 1 || blk.refCnt() == 2);
 
+      // wait for block to move to backing map because refCnt get refreshed 
once block moves to
+      // backing map
+      Waiter.waitFor(HBaseConfiguration.create(), 12000, () -> 
isRamCacheDrained(key, cache));
+
       Cacheable block1 = cache.getBlock(key, false, false, false);
       assertTrue(block1.refCnt() >= 2);
       assertTrue(((HFileBlock) block1).getByteBuffAllocator() == alloc);
@@ -262,6 +267,10 @@ public class TestBucketCacheRefCnt {
     }
   }
 
+  private boolean isRamCacheDrained(BlockCacheKey key, BucketCache cache) {
+    return cache.backingMap.containsKey(key) && 
!cache.ramCache.containsKey(key);
+  }
+
   @Test
   public void testMarkStaleAsEvicted() throws Exception {
     cache = create(1, 1000);