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  1. Hadoop HDFS
  2. HDFS-6584 Support Archival Storage
  3. HDFS-6801

Archival Storage: Add a new data migration tool

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    Details

    • Type: Sub-task
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: balancer & mover, namenode
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      The tool is similar to Balancer. It periodic scans the blocks in HDFS and uses path and/or other meta data (e.g. mtime) to determine if a block should be cooled down (i.e. hot => warm, or warm => cold) or warmed up (i.e. cold => warm, or warm => hot). In contrast to Balancer, the migration tool always move replicas to a different storage type. Similar to Balancer, the replicas are moved in a way that the number of racks the block does not decrease.

        Attachments

        1. h6801_20140813.patch
          37 kB
          Tsz-wo Sze
        2. h6801_20140814.patch
          41 kB
          Tsz-wo Sze
        3. h6801_20140814b.patch
          42 kB
          Tsz-wo Sze
        4. h6801_20140817.patch
          38 kB
          Tsz-wo Sze
        5. h6801_20140818.patch
          37 kB
          Jing Zhao

          Issue Links

          requires

          Sub-task - The sub-task of the issue HDFS-6861 Separate Balancer specific logic form Dispatcher

          • Major - Major loss of function.
          • Patch Available

          Improvement - An improvement or enhancement to an existing feature or task. HDFS-6828 Separate block replica dispatching from Balancer

          • Major - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. HDFS-6809 Move some Balancer's inner classes to standalone classes

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed

            Activity

              People

              • Assignee:
                szetszwo Tsz-wo Sze
                Reporter:
                szetszwo Tsz-wo Sze
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                Dates

                • Created:
                  Updated:
                  Resolved: