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  1. Hadoop HDFS
  2. HDFS-3718

Datanode won't shutdown because of runaway DataBlockScanner thread

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Details

    • Bug
    • Status: Closed
    • Critical
    • Resolution: Fixed
    • 2.0.1-alpha
    • 0.23.3, 2.0.2-alpha
    • datanode
    • None
    • Reviewed

    Description

      Datanode sometimes does not shutdown because the block pool scanner thread keeps running. It prints out "Starting a new period" every five seconds, even after shutdown() is called. Somehow the interrupt is missed.

      DataBlockScanner will also terminate if datanode.shouldRun is false, but in DataNode#shutdown, DataBlockScanner#shutdown() is invoked before it is being set to false.

      Is there any reason why datanode.shouldRun is set to false later?

      Attachments

        1. hdfs-3718.patch.txt
          0.8 kB
          Kihwal Lee

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          People

            kihwal Kihwal Lee
            kihwal Kihwal Lee
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            Dates

              Created:
              Updated:
              Resolved: