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  1. Mahout
  2. MAHOUT-920

Remove a mapreduce job from parallel FPGrowth workflow

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Details

    • Improvement
    • Status: Closed
    • Minor
    • Resolution: Fixed
    • 0.6
    • 0.6
    • None
    • None

    Description

      The transaction sorting job could have been made map-only, and another mapreduce job follows, so it made sense to combine them. It would have been possible to use a ChainMapper approach, but it seemed simpler to fold the functionality into the following mapper (ParallelFPGrowthMapper). The attached patch does just that.

      Attachments

        1. MAHOUT-920.patch
          17 kB
          Tom Pierce
        2. MAHOUT-890.patch
          91 kB
          Tom Pierce

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. MAHOUT-890 Performance issue in FPGrowth

          • Major - Major loss of function.
          • Closed
          relates to

          Improvement - An improvement or enhancement to an existing feature or task. MAHOUT-921 FPG uses a lot of boxed primitives - this patch eliminates a bunch of List<Integer>

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. MAHOUT-927 FPG saves a mapping from from feature to mining group, when this can be calculated on the fly

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed

          Activity

            People

              robinanil Robin Anil
              tcp Tom Pierce
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              Dates

                Created:
                Updated:
                Resolved: