Backup name node stops responding --------------------------------- Key: HDFS-2050 URL: https://issues.apache.org/jira/browse/HDFS-2050 Project: Hadoop HDFS Issue Type: Bug Components: name-node Affects Versions: 0.21.0 Environment: FreeBSD Reporter: Vitalii Tymchyshyn
I've tried to set up backup node on 0.21 and after dome time got: 2011-06-07 20:11:34,820 ERROR org.apache.hadoop.hdfs.server.namenode.Checkpointer: Throwable Exception in doCheckpoint: java.lang.NullPointerException: Panic: parent does not exist at org.apache.hadoop.hdfs.server.namenode.FSDirectory.addChild(FSDirectory.java:1508) at org.apache.hadoop.hdfs.server.namenode.FSDirectory.addChild(FSDirectory.java:1522) at org.apache.hadoop.hdfs.server.namenode.FSDirectory.addNode(FSDirectory.java:1407) at org.apache.hadoop.hdfs.server.namenode.FSDirectory.unprotectedAddFile(FSDirectory.java:216) at org.apache.hadoop.hdfs.server.namenode.FSEditLog.loadEditRecords(FSEditLog.java:526) at org.apache.hadoop.hdfs.server.namenode.FSEditLog.loadFSEdits(FSEditLog.java:411) at org.apache.hadoop.hdfs.server.namenode.BackupStorage.convergeJournalSpool(BackupStorage.java:333) at org.apache.hadoop.hdfs.server.namenode.Checkpointer.doCheckpoint(Checkpointer.java:252) at org.apache.hadoop.hdfs.server.namenode.Checkpointer.run(Checkpointer.java:141) 2011-06-07 20:11:37,072 WARN org.apache.hadoop.hdfs.server.namenode.FSNamesystem: ReplicationMonitor thread received InterruptedException.java.lang.InterruptedException: sleep interrupted 2011-06-07 20:11:37,073 WARN org.apache.hadoop.hdfs.server.namenode.DecommissionManager: Monitor interrupted: java.lang.InterruptedException: sleep interrupted The node stopped responding, but did not exit. It seems to work after restart (did not try to restart main NameNode). I've found this: https://issues.apache.org/jira/browse/HDFS-1904 But comments says it affects only 0.23 trunk, so I think this is either different bug or at least it should be said it can be reproduced on 0.21. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira