vinayakphegde commented on code in PR #5866:
URL: https://github.com/apache/hbase/pull/5866#discussion_r1601501477


##########
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.java:
##########
@@ -2203,6 +2204,21 @@ public Optional<Boolean> shouldCacheFile(HFileInfo 
hFileInfo, Configuration conf
     return Optional.of(!fullyCachedFiles.containsKey(fileName));
   }
 
+  @Override
+  public Optional<Boolean> shouldCacheBlock(BlockCacheKey key, Configuration 
conf) {
+    try {
+      DataTieringManager dataTieringManager = DataTieringManager.getInstance();
+      if (dataTieringManager != null && !dataTieringManager.isHotData(key, 
conf)) {

Review Comment:
   Yeah, I understand the concern. The only thing I am worried about is how we 
can achieve it. Let me think about a way to achieve this without compromising 
on OO principles.



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