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  1. Hadoop HDFS
  2. HDFS-3087

Decomissioning on NN restart can complete without blocks being replicated

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: 0.23.0
    • Fix Version/s: 2.5.0
    • Component/s: namenode
    • Labels:
      None
    • Target Version/s:
    • Hadoop Flags:
      Reviewed

      Description

      If a data node is added to the exclude list and the name node is restarted, the decomissioning happens right away on the data node registration. At this point the initial block report has not been sent, so the name node thinks the node has zero blocks and the decomissioning completes very quick, without replicating the blocks on that node.

        Attachments

        1. HDFS-3087.patch
          5 kB
          Rushabh S Shah

          Activity

            People

            • Assignee:
              shahrs87 Rushabh S Shah
              Reporter:
              kihwal Kihwal Lee
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              Dates

              • Created:
                Updated:
                Resolved: