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  1. Hadoop HDFS
  2. HDFS-3936

MiniDFSCluster shutdown races with BlocksMap usage

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.0.0-alpha
    • Fix Version/s: 2.0.3-alpha
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      Looks like HDFS-3664 didn't fix the whole issue because the added join times out because the thread closing the BM (FSN#stopCommonServices) holds the FSN lock while closing the BM and the BM is block uninterruptedly trying to aquire the FSN lock.

      2012-09-13 18:54:12,526 FATAL hdfs.MiniDFSCluster (MiniDFSCluster.java:shutdown(1355)) - Test resulted in an unexpected exit
      org.apache.hadoop.util.ExitUtil$ExitException: Fatal exception with message null
      stack trace
      java.lang.NullPointerException
      	at org.apache.hadoop.hdfs.server.blockmanagement.BlocksMap.getBlockCollection(BlocksMap.java:101)
      	at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeReplicationWorkForBlocks(BlockManager.java:1132)
      	at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeReplicationWork(BlockManager.java:1107)
      	at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeDatanodeWork(BlockManager.java:3061)
      	at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager$ReplicationMonitor.run(BlockManager.java:3023)
      	at java.lang.Thread.run(Thread.java:662)
      

        Attachments

        1. hdfs-3936.txt
          14 kB
          Eli Collins
        2. hdfs-3936.txt
          0.9 kB
          Eli Collins
        3. hdfs-3936.txt
          2 kB
          Eli Collins

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              • Assignee:
                eli Eli Collins
                Reporter:
                eli Eli Collins
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                Dates

                • Created:
                  Updated:
                  Resolved: