Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.0.0-alpha
    • Fix Version/s: 2.8.0, 2.7.3, 3.0.0-alpha1
    • Component/s: namenode
    • Labels:
      None
    • Target Version/s:
    • Hadoop Flags:
      Reviewed

      Description

      IBRs from thousands of DNs under load will degrade NN performance due to excessive write-lock contention from multiple IPC handler threads. The IBR processing is quick, so the lock contention may be reduced by coalescing multiple IBRs into a single write-lock transaction. The handlers will also be freed up faster for other operations.

        Attachments

        1. HDFS-9198-branch-2.7.patch
          41 kB
          Vinayakumar B
        2. HDFS-9198-Branch-2.8-withamend.diff
          40 kB
          Uma Maheswara Rao G
        3. HDFS-9198-branch2.patch
          32 kB
          Daryn Sharp
        4. HDFS-9198-Branch-2-withamend.diff
          40 kB
          Uma Maheswara Rao G
        5. HDFS-9198-trunk.patch
          38 kB
          Daryn Sharp
        6. HDFS-9198-trunk.patch
          38 kB
          Daryn Sharp
        7. HDFS-9198-trunk.patch
          36 kB
          Daryn Sharp
        8. HDFS-9198-trunk.patch
          36 kB
          Daryn Sharp
        9. HDFS-9198-trunk.patch
          31 kB
          Daryn Sharp

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

                • Created:
                  Updated:
                  Resolved: