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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-686) NullPointerException is thrown while merging edit log and image
Date Thu, 08 Oct 2009 17:10:31 GMT
NullPointerException is thrown while merging edit log and image
---------------------------------------------------------------

                 Key: HDFS-686
                 URL: https://issues.apache.org/jira/browse/HDFS-686
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: name-node
    Affects Versions: 0.20.1
            Reporter: Hairong Kuang
            Assignee: Hairong Kuang
             Fix For: 0.20.2


Our secondary name node is not able to start on NullPointerException:
ERROR org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode: java.lang.NullPointerException
        at org.apache.hadoop.hdfs.server.namenode.FSDirectory.unprotectedSetTimes(FSDirectory.java:1232)
        at org.apache.hadoop.hdfs.server.namenode.FSDirectory.unprotectedSetTimes(FSDirectory.java:1221)
        at org.apache.hadoop.hdfs.server.namenode.FSEditLog.loadFSEdits(FSEditLog.java:776)
        at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSEdits(FSImage.java:992)
        at
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode$CheckpointStorage.doMerge(SecondaryNameNode.java:590)
        at
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode$CheckpointStorage.access$000(SecondaryNameNode.java:473)
        at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.doMerge(SecondaryNameNode.java:350)
        at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.doCheckpoint(SecondaryNameNode.java:314)
        at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.run(SecondaryNameNode.java:225)
        at java.lang.Thread.run(Thread.java:619)

This was caused by setting access time on a non-existent file.

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