petersomogyi commented on a change in pull request #2588:
URL: https://github.com/apache/hbase/pull/2588#discussion_r512216019



##########
File path: 
hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/MergeTableRegionsProcedure.java
##########
@@ -135,8 +134,8 @@ private static void checkRegionsToMerge(MasterProcedureEnv 
env, final RegionInfo
           throw new MergeRegionException(msg);
         }
         if (!force && !ri.isAdjacent(previous) && !ri.isOverlap(previous)) {
-          String msg = "Unable to merge non-adjacent or non-overlapping 
regions " +
-              previous.getShortNameToLog() + ", " + ri.getShortNameToLog() + " 
when force=false";
+          String msg = "Unable to merge non-adjacent or non-overlapping 
regions '" +
+              previous.getShortNameToLog() + "', '" + ri.getShortNameToLog() + 
"' when force=false";

Review comment:
       This is a clean cherry-pick of your commit to master, the `'` character 
was part of the original commit. 🙂  It was not pushed to branch-2.2 at that 
time I found this as a nice improvement.




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