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  1. Apache Tez
  2. TEZ-1073

RLE IFile merge() fastpath

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: 0.5.0
    • Fix Version/s: 0.5.0
    • Component/s: None
    • Labels:
      None
    • Target Version/s:

      Description

      IFile iterators actually consist of a tri-state - NEW_KEY, SAME_KEY and NO_KEY.

      This can be used to avoid rebalancing the priority queue when the same reader is returning SAME_KEY in its reader during the initial merge operation in the reducer.

        Attachments

        1. TEZ-1073.1.patch
          4 kB
          Gopal Vijayaraghavan
        2. TEZ-1073.WIP.patch
          4 kB
          Gopal Vijayaraghavan

          Activity

            People

            • Assignee:
              gopalv Gopal Vijayaraghavan
              Reporter:
              gopalv Gopal Vijayaraghavan
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              Dates

              • Created:
                Updated:
                Resolved: