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  1. Hive
  2. HIVE-11573

PointLookupOptimizer can be pessimistic at a low nDV

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 2.0.0
    • 2.0.0
    • None
    • None
    • Provide configurable limits to the PointLookupOptimizer

    Description

      The PointLookupOptimizer can turn off some of the optimizations due to its use of tuple IN() clauses.

      Limit the application of the optimizer for very low nDV cases and extract the sub-clause as a pre-condition during runtime, to trigger the simple column predicate index lookups.

      Attachments

        1. HIVE-11573.1.patch
          8 kB
          Gopal Vijayaraghavan
        2. HIVE-11573.2.patch
          8 kB
          Gopal Vijayaraghavan
        3. HIVE-11573.3.patch
          37 kB
          Gopal Vijayaraghavan
        4. HIVE-11573.4.patch
          40 kB
          Gopal Vijayaraghavan
        5. HIVE-11573.5.patch
          106 kB
          jcamachorodriguez
        6. HIVE-11573.6.patch
          108 kB
          Gopal Vijayaraghavan

        Issue Links

        is related to

        Bug - A problem which impairs or prevents the functions of the product. HIVE-11634 Support partition pruning for IN(STRUCT(partcol, nonpartcol..)...)

        • Major - Major loss of function.
        • Closed

        Bug - A problem which impairs or prevents the functions of the product. HIVE-11698 Add additional test for PointLookupOptimizer

        • Major - Major loss of function.
        • Closed

        Bug - A problem which impairs or prevents the functions of the product. HIVE-11726 Pushed IN predicates to the metastore

        • Major - Major loss of function.
        • Closed

        New Feature - A new feature of the product, which has yet to be developed. HIVE-11461 Transform flat AND/OR into IN struct clause

        • Major - Major loss of function.
        • Closed

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            gopalv Gopal Vijayaraghavan Assign to me
            gopalv Gopal Vijayaraghavan
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            Dates

              Created:
              Updated:
              Resolved:

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