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  1. Hadoop HDFS
  2. HDFS-686

NullPointerException is thrown while merging edit log and image

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Details

    • Bug
    • Status: Resolved
    • Blocker
    • Resolution: Fixed
    • 0.20.1, 0.21.0
    • None
    • namenode
    • None
    • Reviewed
    • Error merging image and edits corrected.

    Description

      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.

      Attachments

        1. nullSetTime.patch
          1 kB
          Hairong Kuang
        2. openNPE-trunk.patch
          1 kB
          Hairong Kuang
        3. openNPE.patch
          1 kB
          Hairong Kuang

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            hairong Hairong Kuang
            hairong Hairong Kuang
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            Dates

              Created:
              Updated:
              Resolved:

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