(hbase) branch master updated: HBASE-30275 TestRecoveryPersistentBucketCache#testBucketCacheRecoveryWithAllocationInconsistencies has a race condition between backingMapValidated and cacheState=ENABLED (#8456)

[wchevreuil]

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The following commit(s) were added to refs/heads/master by this push:
     new b28d37d931e HBASE-30275 
TestRecoveryPersistentBucketCache#testBucketCacheRecoveryWithAllocationInconsistencies
 has a race condition between backingMapValidated and cacheState=ENABLED (#8456)
b28d37d931e is described below

commit b28d37d931e7bdb1664f53384a333b0737cdaa0d
Author: Aman Poonia <aman.poonia...@gmail.com>
AuthorDate: Wed Jul 8 15:28:55 2026 +0530

    HBASE-30275 
TestRecoveryPersistentBucketCache#testBucketCacheRecoveryWithAllocationInconsistencies
 has a race condition between backingMapValidated and cacheState=ENABLED (#8456)
    
    Signed-off-by: Wellington Chevreuil <wchevre...@apache.org>
    Signed-off-by: Viraj Jasani <vjas...@apache.org>
    Signed-off-by: Peng Lu <lup...@apache.org>
    Reviewed-by: Umesh Kumar <9414umeshku...@gmail.com>
---
 .../io/hfile/bucket/TestRecoveryPersistentBucketCache.java     | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git 
a/hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/bucket/TestRecoveryPersistentBucketCache.java
 
b/hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/bucket/TestRecoveryPersistentBucketCache.java
index c3fcc267f47..adc072b8d50 100644
--- 
a/hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/bucket/TestRecoveryPersistentBucketCache.java
+++ 
b/hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/bucket/TestRecoveryPersistentBucketCache.java
@@ -22,10 +22,12 @@ import static 
org.apache.hadoop.hbase.io.hfile.bucket.BucketCache.ACCEPT_FACTOR_
 import static 
org.apache.hadoop.hbase.io.hfile.bucket.BucketCache.DEFAULT_ERROR_TOLERATION_DURATION;
 import static 
org.apache.hadoop.hbase.io.hfile.bucket.BucketCache.EXTRA_FREE_FACTOR_CONFIG_NAME;
 import static 
org.apache.hadoop.hbase.io.hfile.bucket.BucketCache.MIN_FACTOR_CONFIG_NAME;
+import static org.awaitility.Awaitility.await;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
+import java.time.Duration;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.hbase.HBaseConfiguration;
@@ -251,9 +253,11 @@ public class TestRecoveryPersistentBucketCache {
     BucketCache newBucketCache = new BucketCache("file:" + testDir + 
"/bucket.cache", 36 * 1024,
       8192, bucketSizes, writeThreads, writerQLen, testDir + 
"/bucket.persistence",
       DEFAULT_ERROR_TOLERATION_DURATION, conf);
-    while (!newBucketCache.getBackingMapValidated().get()) {
-      Thread.sleep(10);
-    }
+    // backingMapValidated is set inside retrieveFromFile(), but 
isCacheEnabled() (which
+    // getBlock() checks) is set to true only in the finally block that 
follows. Waiting on
+    // backingMapValidated alone leaves a race window; await both conditions 
together.
+    
await().atMost(Duration.ofSeconds(30)).pollInterval(Duration.ofMillis(10)).until(
+      () -> newBucketCache.getBackingMapValidated().get() && 
newBucketCache.isCacheEnabled());
 
     BlockCacheKey[] newKeys = CacheTestUtils.regenerateKeys(blocks, names);