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  1. Hadoop Common
  2. HADOOP-6166

Improve PureJavaCrc32

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 0.21.0
    • 0.21.0
    • performance, util
    • None
    • Reviewed

    Description

      Got some ideas to improve CRC32 calculation.

      Attachments

        1. Rplots-nehalem64.pdf
          667 kB
          Todd Lipcon
        2. Rplots-nehalem32.pdf
          425 kB
          Todd Lipcon
        3. Rplots-laptop.pdf
          263 kB
          Todd Lipcon
        4. Rplots.pdf
          171 kB
          Todd Lipcon
        5. Rplots.pdf
          171 kB
          Todd Lipcon
        6. Rplots.pdf
          153 kB
          Todd Lipcon
        7. graph.r
          1.0 kB
          Todd Lipcon
        8. graph.r
          1.0 kB
          Todd Lipcon
        9. c6166_20090819review.patch
          53 kB
          Tsz-wo Sze
        10. c6166_20090819.patch
          320 kB
          Tsz-wo Sze
        11. c6166_20090811.patch
          310 kB
          Tsz-wo Sze
        12. c6166_20090810.patch
          321 kB
          Tsz-wo Sze
        13. c6166_20090728.patch
          308 kB
          Tsz-wo Sze
        14. c6166_20090727.patch
          306 kB
          Tsz-wo Sze
        15. c6166_20090722.patch
          251 kB
          Tsz-wo Sze
        16. c6166_20090722_benchmark_64VM.txt
          21 kB
          Tsz-wo Sze
        17. c6166_20090722_benchmark_32VM.txt
          21 kB
          Tsz-wo Sze

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. HADOOP-5318 Poor IO Performance due to AtomicLong operations

          • Major - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. HADOOP-8617 backport pure Java CRC32 calculator changes to branch-1

          • Major - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. HADOOP-6148 Implement a pure Java CRC32 calculator

          • Major - Major loss of function.
          • Closed

          Activity

            People

              szetszwo Tsz-wo Sze
              szetszwo Tsz-wo Sze
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              Dates

                Created:
                Updated:
                Resolved: