Description
Click Debug dump on the backup master web ui, we get:
HTTP ERROR 500 Problem accessing /dump. Reason: INTERNAL_SERVER_ERROR Caused by: java.lang.NullPointerException at org.apache.hadoop.hbase.master.MasterDumpServlet.dumpServers(MasterDumpServlet.java:113) at org.apache.hadoop.hbase.master.MasterDumpServlet.doGet(MasterDumpServlet.java:68)