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  1. Hive
  2. HIVE-1754

Remove JDBM component from Map Join

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.6.0, 0.7.0
    • Fix Version/s: 0.7.0
    • Component/s: Query Processor
    • Labels:
      None

      Description

      Right now, JDBM is the major performance bottleneck of performance.
      With the growth of the small table, the PUT and GET operation will take most of execution time.

      Map Join is designed to load the data of small table into memory.
      If the data is too large to hold in memory, then there is no need to use the map join strategy.

        Attachments

        1. Hive-1754.patch
          590 kB
          Liyin Tang
        2. Hive-1754_2.patch
          975 kB
          Liyin Tang
        3. Hive-1754_3.patch
          975 kB
          Liyin Tang
        4. hive-1754_4.patch
          974 kB
          Liyin Tang
        5. hive-1754_5.patch
          974 kB
          Liyin Tang
        6. hive-1754_7.patch
          1.01 MB
          Liyin Tang
        7. hive-1754_9.patch
          1.03 MB
          Liyin Tang

          Activity

            People

            • Assignee:
              liyin Liyin Tang
              Reporter:
              liyin Liyin Tang
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              Dates

              • Created:
                Updated:
                Resolved: