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  1. Hadoop HDFS
  2. HDFS-3048

Small race in BlockManager#close

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 2.0.0-alpha
    • 2.0.2-alpha
    • namenode
    • None
    • Reviewed

    Description

      There's a small race in BlockManager#close, we close the BlocksMap before the replication monitor, which means the replication monitor can NPE if it tries to access the blocks map. We need to swap the order (close the blocks map after shutting down the repl monitor).

      Attachments

        1. hdfs-3048.txt
          1 kB
          Andy Isaacson
        2. hdfs-3787-2.txt
          1 kB
          Eli Collins
        3. hdfs-3048.txt
          0.8 kB
          Eli Collins

        Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. HDFS-3787 BlockManager#close races with ReplicationMonitor#run

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          is related to

          Bug - A problem which impairs or prevents the functions of the product. HDFS-3664 BlockManager race when stopping active services

          • Major - Major loss of function.
          • Closed

          Activity

            People

              adi2 Andy Isaacson
              eli2 Eli Collins
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              Dates

                Created:
                Updated:
                Resolved: