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  1. Hive
  2. HIVE-8699 Enable support for common map join [Spark Branch]
  3. HIVE-8911

Enable mapjoin hints [Spark Branch]

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Details

    • Sub-task
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • spark-branch
    • 1.1.0
    • Spark

    Description

      Currently the big table selection in a mapjoin is based on stats.

      We should also enable the big-table selection based on hints. See class MapJoinProcessor. This is a logical-optimizer class, so we should be able to re-use this without too many changes to hook up with SparkMapJoinResolver.

      Attachments

        1. HIVE-8911.1-spark.patch
          583 kB
          Chao Sun
        2. HIVE-8911.2-spark.patch
          597 kB
          Chao Sun
        3. HIVE-8911.3-spark.patch
          600 kB
          Chao Sun
        4. HIVE-8911.4-spark.patch
          605 kB
          Chao Sun
        5. HIVE-8911.5-spark.patch
          605 kB
          Chao Sun
        6. HIVE-8911.6-spark.patch
          601 kB
          Chao Sun

        Issue Links

        relates to

        Sub-task - The sub-task of the issue HIVE-8640 Support hints of SMBJoin [Spark Branch]

        • Major - Major loss of function.
        • Resolved
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            csun Chao Sun Assign to me
            szehon Szehon Ho
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