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  1. Hadoop HDFS
  2. HDFS-1458

Improve checkpoint performance by avoiding unnecessary image downloads

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Details

    • Improvement
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 0.22.0
    • 0.23.0
    • namenode
    • None
    • 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.

      Attachments

        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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            hairong Hairong Kuang
            hairong Hairong Kuang
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              Updated:
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