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

        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: