2010-04-13 17:40:28,495 ERROR org.apache.zookeeper.ClientCnxn: Error while calling watcher
java.lang.NullPointerException
        at org.apache.hadoop.hbase.regionserver.HRegionServer.abort(HRegionServer.java:1263)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.process(HRegionServer.java:373)
        at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:488)