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From "ryan rawson (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-1002) Secondary Name Node crash, NPE in edit log replay
Date Thu, 25 Feb 2010 22:54:28 GMT
Secondary Name Node crash, NPE in edit log replay
-------------------------------------------------

                 Key: HDFS-1002
                 URL: https://issues.apache.org/jira/browse/HDFS-1002
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 0.21.0
            Reporter: ryan rawson
             Fix For: 0.21.0


An NPE in SNN, the core of the message looks like yay so:

2010-02-25 11:54:05,834 ERROR org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode: java.lang.NullPointerException
        at org.apache.hadoop.hdfs.server.namenode.FSDirectory.addChild(FSDirectory.java:1152)
        at org.apache.hadoop.hdfs.server.namenode.FSDirectory.addChild(FSDirectory.java:1164)
        at org.apache.hadoop.hdfs.server.namenode.FSDirectory.addNode(FSDirectory.java:1067)
        at org.apache.hadoop.hdfs.server.namenode.FSDirectory.unprotectedAddFile(FSDirectory.java:213)
        at org.apache.hadoop.hdfs.server.namenode.FSEditLog.loadEditRecords(FSEditLog.java:511)
        at org.apache.hadoop.hdfs.server.namenode.FSEditLog.loadFSEdits(FSEditLog.java:401)
        at org.apache.hadoop.hdfs.server.namenode.FSEditLog.loadFSEdits(FSEditLog.java:368)
        at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSEdits(FSImage.java:1172)
        at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode$CheckpointStorage.doMerge(SecondaryNameNode.java:594)
        at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode$CheckpointStorage.access$000(SecondaryNameNode.java:476)
        at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.doMerge(SecondaryNameNode.java:353)
        at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.doCheckpoint(SecondaryNameNode.java:317)
        at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.run(SecondaryNameNode.java:219)
        at java.lang.Thread.run(Thread.java:619)

This happens even if I restart SNN over and over again.

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