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  1. Hadoop HDFS
  2. HDFS-10987

Make Decommission less expensive when lot of blocks present.

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 2.8.0, 2.7.4, 3.0.0-alpha2
    • Component/s: None
    • Labels:
      None
    • Target Version/s:
    • Hadoop Flags:
      Reviewed

      Description

      When user want to decommission a node which having 50M blocks ,it could hold the namesystem lock for long time.We've seen it is taking 36 sec.

      As we knew during this time, Namenode will not available... As this decommission will continuosly run till all the blocks got replicated,hence Namenode will unavailable.

        Attachments

        1. HDFS-10987-branch-2.7.patch
          3 kB
          Brahma Reddy Battula
        2. HDFS-10987-002.patch
          3 kB
          Brahma Reddy Battula
        3. HDFS-10987.patch
          2 kB
          Brahma Reddy Battula

          Activity

            People

            • Assignee:
              brahmareddy Brahma Reddy Battula
              Reporter:
              brahmareddy Brahma Reddy Battula
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              Dates

              • Created:
                Updated:
                Resolved: