guluo2016 commented on code in PR #8456:
URL: https://github.com/apache/hbase/pull/8456#discussion_r3530215432


##########
hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/bucket/TestRecoveryPersistentBucketCache.java:
##########
@@ -251,9 +253,12 @@ public void 
testBucketCacheRecoveryWithAllocationInconsistencies() throws Except
     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)).pollDelay(Duration.ofMillis(10))
+      .pollInterval(Duration.ofMillis(10)).until(

Review Comment:
   For me is ok.
   A small nit: pollDelay would be autimatically set as to the same value as 
pollInterval. 
   Since both are set to 10ms here, maybe the 
`pollDelay(Duration.ofMillis(10))`can be removed.
   
   <img width="1101" height="335" alt="Image" 
src="https://github.com/user-attachments/assets/73be95d2-369a-430e-869e-c0968b518bcf";
 />



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