Hadoop Common
  1. Hadoop Common
  2. HADOOP-7443

Add CRC32C as another DataChecksum implementation

    Details

    • Type: New Feature New Feature
    • Status: Closed
    • Priority: Major 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.

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

        Issue Links

          Activity

          Arun C Murthy made changes -
          Status Resolved [ 5 ] Closed [ 6 ]
          Todd Lipcon made changes -
          Status Patch Available [ 10002 ] Resolved [ 5 ]
          Hadoop Flags [Reviewed]
          Fix Version/s 0.23.0 [ 12315569 ]
          Resolution Fixed [ 1 ]
          Todd Lipcon made changes -
          Status Open [ 1 ] Patch Available [ 10002 ]
          Todd Lipcon made changes -
          Attachment hadoop-7443.txt [ 12486255 ]
          Todd Lipcon made changes -
          Link This issue is blocked by HADOOP-7444 [ HADOOP-7444 ]
          Todd Lipcon made changes -
          Attachment hadoop-7443.txt [ 12486138 ]
          Todd Lipcon made changes -
          Field Original Value New Value
          Link This issue is part of HDFS-2080 [ HDFS-2080 ]
          Todd Lipcon created issue -

            People

            • Assignee:
              Todd Lipcon
              Reporter:
              Todd Lipcon
            • Votes:
              0 Vote for this issue
              Watchers:
              8 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved:

                Development