I was running the Hadoop in HA configuration with two Namenodes, three Journalnodes and one Datanodes in fully distrubuted mode. I killed the java process of all the nodes and when I again started the Namenode after starting the Journalnode, I got the below error in both the Namenodes. Please clarify the reason for this error because I could not recreate it. (Is this related to Jira HDFS-5074?)
2013-09-26 10:44:41,914 FATAL org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer: Unknown error encountered while tailing edits. Shutting down standby NN. java.io.IOException: There appears to be a gap in the edit log. We expected txid 26, but got txid 5400. at org.apache.hadoop.hdfs.server.namenode.MetaRecoveryContext.editLogLoaderPrompt(MetaRecoveryContext.java:94) at org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:183) at org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:111) at org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:733) at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer.doTailEdits(EditLogTailer.java:227) at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.doWork(EditLogTailer.java:321) at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.access$200(EditLogTailer.java:279) at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread$1.run(EditLogTailer.java:296) at org.apache.hadoop.security.SecurityUtil.doAsLoginUserOrFatal(SecurityUtil.java:456) at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.run(EditLogTailer.java:292) 2013-09-26 10:44:41,917 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 1
