Hadoop HDFS
  1. Hadoop HDFS
  2. HDFS-1458

Improve checkpoint performance by avoiding unnecessary image downloads

    Details

    • Type: Improvement Improvement
    • Status: Resolved
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: 0.22.0
    • Fix Version/s: 0.23.0
    • Component/s: namenode
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      If secondary namenode could verify that the image it has on its disk is the same as the one in the primary NameNode, it could skip downloading the image from the primary NN, thus completely eliminating the image download overhead.

      1. checkpoint-checkfsimageissame.patch
        10 kB
        Yilei Lu
      2. trunkNoDownloadImage.patch
        6 kB
        Hairong Kuang
      3. trunkNoDownloadImage1.patch
        9 kB
        Hairong Kuang
      4. trunkNoDownloadImage2.patch
        9 kB
        Hairong Kuang
      5. trunkNoDownloadImage3.patch
        9 kB
        Hairong Kuang

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            • Assignee:
              Hairong Kuang
              Reporter:
              Hairong Kuang
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              Dates

              • Created:
                Updated:
                Resolved:

                Development