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  1. Hadoop HDFS
  2. HDFS-5681

renewLease should not hold fsn write lock

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.0.0-alpha, 3.0.0-alpha1
    • Fix Version/s: 2.3.0
    • Component/s: namenode
    • Labels:
      None
    • Target Version/s:
    • Hadoop Flags:
      Reviewed

      Description

      Lease renewals unnecessarily hold the write lock which reduces throughput. Currently the fsn lock doubles as an "operational lock" to prevent state transitions. If the lease manager is thread-safe then a read lock is sufficient.

        Attachments

        1. HDFS-5681.patch
          0.8 kB
          Daryn Sharp

          Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. HDFS-2695 ReadLock should be enough for FsNameSystem#renewLease.

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

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              • Assignee:
                daryn Daryn Sharp
                Reporter:
                daryn Daryn Sharp
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                Dates

                • Created:
                  Updated:
                  Resolved: