Uploaded image for project: 'Hadoop HDFS'
  1. Hadoop HDFS
  2. HDFS-4075

Reduce recommissioning overhead

    XMLWordPrintableJSON

Details

    • Bug
    • Status: Closed
    • Critical
    • Resolution: Fixed
    • 0.23.4, 2.0.2-alpha
    • 2.0.3-alpha, 0.23.5
    • namenode
    • 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

        Issue Links

          Activity

            People

              kihwal Kihwal Lee
              kihwal Kihwal Lee
              Votes:
              0 Vote for this issue
              Watchers:
              12 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: