We are seeing a lot of these NPE once we enabled replication. HBase Version: 0.92.1-cdh4.0.1
2013-03-25 15:29:25,027 ERROR org.apache.hadoop.hbase.master.LogCleaner: Caught exception java.lang.NullPointerException at org.apache.hadoop.hbase.replication.ReplicationZookeeper.getListOfReplicators(ReplicationZookeeper.java:503) at org.apache.hadoop.hbase.replication.master.ReplicationLogCleaner.refreshHLogsAndSearch(ReplicationLogCleaner.java:96) at org.apache.hadoop.hbase.replication.master.ReplicationLogCleaner.isLogDeletable(ReplicationLogCleaner.java:83) at org.apache.hadoop.hbase.master.LogCleaner.chore(LogCleaner.java:133) at org.apache.hadoop.hbase.Chore.run(Chore.java:67) at org.apache.hadoop.hbase.master.LogCleaner.run(LogCleaner.java:155) at java.lang.Thread.run(Thread.java:662) Any ideas as to what is going on? Seems like we should never be getting a NPE. ~Jeff -- Jeff Whiting Qualtrics Senior Software Engineer je...@qualtrics.com