virajjasani commented on a change in pull request #2148:
URL: https://github.com/apache/hbase/pull/2148#discussion_r460747418



##########
File path: 
hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/master/MasterStatusTmpl.jamon
##########
@@ -224,6 +225,11 @@ AssignmentManager assignmentManager = 
master.getAssignmentManager();
           <& AssignmentManagerStatusTmpl; 
assignmentManager=master.getAssignmentManager()&>
         </%if>
         <%if !master.isInMaintenanceMode() %>
+          <%java>
+          while (master.getMasterCoprocessorHost() == null) {
+            Threads.sleep(50);

Review comment:
       Let's also print some message which we can removed after getting out of 
this `while` loop?




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