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  1. Hadoop Common
  2. HADOOP-3684

The data_join should allow the user to implement a customer cloning function

    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.19.0
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed
    • Release Note:
      Allowed user to overwrite clone function in a subclass of TaggedMapOutput class.

      Description

      Currently, the framework uses serialization/deserialization to clone the values passed to the resuce function.
      This amounts to a very heavy weight deep copy of the value objects.
      That is way too expensive. Although that may be a generic way to work for all possible value classes, thus good as a default way,
      the framework should allow the user to implemet an application specific yet efficient cloning function.

        Attachments

        1. H-3684.txt
          2 kB
          Runping Qi

          Activity

            People

            • Assignee:
              runping Runping Qi
              Reporter:
              runping Runping Qi
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              Dates

              • Created:
                Updated:
                Resolved: