Hadoop HDFS
  1. Hadoop HDFS
  2. HDFS-686

NullPointerException is thrown while merging edit log and image

    Details

    • Type: Bug Bug
    • Status: Resolved
    • Priority: Blocker Blocker
    • Resolution: Fixed
    • Affects Version/s: 0.20.1, 0.21.0
    • Fix Version/s: None
    • Component/s: namenode
    • Labels:
      None
    • Hadoop Flags:
      Reviewed
    • Release Note:
      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.

      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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            • Assignee:
              Hairong Kuang
              Reporter:
              Hairong Kuang
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              Dates

              • Created:
                Updated:
                Resolved:

                Development