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  1. Hadoop HDFS
  2. HDFS-13694

Making md5 computing being in parallel with image loading

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 2.10.0, 3.0.4, 3.3.0, 3.2.1, 2.9.3, 3.1.3
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      During namenode image loading, it firstly compute the md5 and then load the image. Actually these two steps can be in parallel.

       Test this patch against a fsimage of a 70PB 2.4 cluster (200million files and 300million blocks), the image loading time be reduced from 1210 seconds to 1105 seconds.So it can reduce up to about 10% of time.

       

        Attachments

        1. HDFS-13694-001.patch
          2 kB
          zhouyingchao
        2. HDFS-13694-002.patch
          2 kB
          Lisheng Sun
        3. HDFS-13694-003.patch
          2 kB
          Lisheng Sun
        4. HDFS-13694-004.patch
          2 kB
          Lisheng Sun
        5. HDFS-13694-005.patch
          3 kB
          Lisheng Sun
        6. HDFS-13694-006.patch
          3 kB
          Lisheng Sun
        7. HDFS-13694-007.patch
          3 kB
          Íñigo Goiri

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              • Assignee:
                leosun08 Lisheng Sun
                Reporter:
                sinago zhouyingchao
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                Dates

                • Created:
                  Updated:
                  Resolved: