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  1. Hive
  2. HIVE-1695

MapJoin followed by ReduceSink should be done as single MapReduce Job

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Duplicate
    • None
    • None
    • Query Processor
    • None

    Description

      Currently MapJoin followed by ReduceSink runs as two MapReduce jobs : One map only job followed by a Map-Reduce job. It can be combined into single MapReduce Job.

      Attachments

        1. hive-1695.patch
          10 kB
          Sreekanth Ramakrishnan
        2. hive-1695-1.patch
          94 kB
          Sreekanth Ramakrishnan

        Issue Links

          is duplicated by

          Improvement - An improvement or enhancement to an existing feature or task. HIVE-3784 de-emphasize mapjoin hint

          • Major - Major loss of function.
          • Closed

          Activity

            People

              sreekanth Sreekanth Ramakrishnan
              amareshwari Amareshwari Sriramadasu
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              Dates

                Created:
                Updated:
                Resolved: