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  1. Hadoop Common
  2. HADOOP-604

DataNodes get NullPointerException and become unresponsive on 50010

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.6.0
    • Fix Version/s: 0.9.0
    • Component/s: None
    • Labels:
      None

      Description

      I wonder whether handling of 'children' in FSDataset is thread-safe.

      Exception in thread "org.apache.hadoop.dfs.DataNode$DataXceiveServer@19b04e2" java.lang.NullPointerException
      at org.apache.hadoop.dfs.FSDataset$FSDir.checkDirTree(FSDataset.java:162)
      at org.apache.hadoop.dfs.FSDataset$FSDir.checkDirTree(FSDataset.java:162)
      at org.apache.hadoop.dfs.FSDataset$FSDir.checkDirTree(FSDataset.java:162)
      at org.apache.hadoop.dfs.FSDataset$FSDir.checkDirTree(FSDataset.java:162)
      at org.apache.hadoop.dfs.FSDataset$FSVolume.checkDirs(FSDataset.java:238)
      at org.apache.hadoop.dfs.FSDataset$FSVolumeSet.checkDirs(FSDataset.java:326)
      at org.apache.hadoop.dfs.FSDataset.checkDataDir(FSDataset.java:522)
      at org.apache.hadoop.dfs.DataNode$DataXceiveServer.run(DataNode.java:472)
      at java.lang.Thread.run(Thread.java:595)

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            • Assignee:
              rangadi Raghu Angadi
              Reporter:
              ckunz Christian Kunz
            • Votes:
              1 Vote for this issue
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              Dates

              • Created:
                Updated:
                Resolved: