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  1. Hadoop HDFS
  2. HDFS-1555

HDFS 20 append: Disallow pipeline recovery if a file is already being lease recovered

    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.20-append
    • Fix Version/s: 0.20-append, 0.20.205.0
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      When a file is under lease recovery and the writer is still alive, the write pipeline will be killed and then the writer will start a pipeline recovery. Sometimes the pipeline recovery may race before the lease recovery and as a result fail the lease recovery. This is very bad if we want to support the strong recoverLease semantics in HDFS-1554. So it would be nice if we could disallow a file's pipeline recovery while its lease recovery is in progress.

        Attachments

        1. recoveryRace.patch
          4 kB
          Hairong Kuang
        2. appendRecoveryRace.patch
          6 kB
          Hairong Kuang
        3. HDFS-1555.20-security.1.patch
          6 kB
          Jitendra Nath Pandey

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              • Assignee:
                hairong Hairong Kuang
                Reporter:
                hairong Hairong Kuang
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                Dates

                • Created:
                  Updated:
                  Resolved: