JiaLiangC commented on code in PR #3825:
URL: https://github.com/apache/ambari/pull/3825#discussion_r1764277332


##########
ambari-server/src/test/java/org/apache/ambari/server/controller/metrics/timeline/cache/TimelineMetricCacheSizingTest.java:
##########


Review Comment:
   The reason for deleting TimelineMetricCacheSizingTest?



##########
ambari-server/src/main/java/org/apache/ambari/server/controller/metrics/timeline/cache/TimelineMetricCacheEntryFactory.java:
##########
@@ -319,4 +322,24 @@ private long getMillisecondsTime(long time) {
       return time;
     }
   }
+  @Override
+  public void delete(TimelineAppMetricCacheKey key) throws 
CacheWritingException {
+    // no need to implement.
+  }
+
+  @Override
+  public Map<TimelineAppMetricCacheKey, TimelineMetricsCacheValue> 
loadAll(Iterable<? extends TimelineAppMetricCacheKey> keys) throws 
BulkCacheLoadingException, Exception {
+//    no need to implement.
+    return null;
+  }
+
+  @Override
+  public void writeAll(Iterable<? extends Map.Entry<? extends 
TimelineAppMetricCacheKey, ? extends TimelineMetricsCacheValue>> entries) 
throws BulkCacheWritingException, Exception {
+//    no need to implement.
+  }
+
+  @Override
+  public void deleteAll(Iterable<? extends TimelineAppMetricCacheKey> keys) 
throws BulkCacheWritingException, Exception {
+//    no need to implement.
+  }

Review Comment:
   If the code here is not specifically implemented, can it be removed?



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