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  1. Hadoop Common
  2. HADOOP-7443

Add CRC32C as another DataChecksum implementation

    Details

    • Type: New Feature
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.23.0
    • Component/s: io, util
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      CRC32C is another checksum very similar to our existing CRC32, but with a different polynomial. The chief advantage of this other polynomial is that SSE4.2 includes hardware support for its calculation. HDFS-2080 is the umbrella JIRA which proposes using this new polynomial to save substantial amounts of CPU.

        Attachments

        1. hadoop-7443.txt
          36 kB
          Todd Lipcon
        2. hadoop-7443.txt
          36 kB
          Todd Lipcon

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              • Assignee:
                tlipcon Todd Lipcon
                Reporter:
                tlipcon Todd Lipcon
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                Dates

                • Created:
                  Updated:
                  Resolved: