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  1. Hadoop HDFS
  2. HDFS-4075

Reduce recommissioning overhead

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: 0.23.4, 2.0.2-alpha
    • Fix Version/s: 2.0.3-alpha, 0.23.5
    • Component/s: namenode
    • Labels:
      None

      Description

      When datanodes are recommissioned,

      {BlockManager#processOverReplicatedBlocksOnReCommission()}

      is called for each rejoined node and excess blocks are added to the invalidate list. The problem is this is done while the namesystem write lock is held.

        Attachments

        1. hdfs-4075.patch
          2 kB
          Kihwal Lee
        2. hdfs-4075.patch
          2 kB
          Kihwal Lee
        3. hdfs-4075.patch
          3 kB
          Kihwal Lee

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            • Assignee:
              kihwal Kihwal Lee
              Reporter:
              kihwal Kihwal Lee

              Dates

              • Created:
                Updated:
                Resolved:

                Issue deployment