openinx commented on a change in pull request #341: HBASE-22582 The Compaction 
writer may access the lastCell whose memor…
URL: https://github.com/apache/hbase/pull/341#discussion_r300203463
 
 

 ##########
 File path: 
hbase-server/src/main/java/org/apache/hadoop/hbase/mob/DefaultMobStoreCompactor.java
 ##########
 @@ -311,13 +311,10 @@ protected boolean performCompaction(FileDetails fd, 
InternalScanner scanner, Cel
         // logging at DEBUG level
         if (LOG.isDebugEnabled()) {
           if ((now - lastMillis) >= COMPACTION_PROGRESS_LOG_INTERVAL) {
-            LOG.debug("Compaction progress: "
-                + compactionName
-                + " "
-                + progress
-                + String.format(", rate=%.2f kB/sec", 
(bytesWrittenProgressForLog / 1024.0)
-                    / ((now - lastMillis) / 1000.0)) + ", throughputController 
is "
-                + throughputController);
+            String rate = String.format("%.2f",
 
 Review comment:
   Have an existed isDebugEnabled before in line#312 :-) 

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