Incompatible namespaceID for journal Storage Directory ...
Question:2014-04-1515:00:02,235FATALorg.apache.hadoop.hdfs.server.namenode.FSEditLog:Error:recoverUnfinalizedSegmentsfailedforrequiredjournal(JournalAndStream(mgr=QJMto[172.16.19.21:8485,172.16.19.22: