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  1. IMPALA
  2. IMPALA-9581

Support Kudu VARCHAR Predicates for STRING values

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Details

    • Improvement
    • Status: Open
    • Major
    • Resolution: Unresolved
    • None
    • None
    • Backend
    • ghx-label-2

    Description

      Kudu VARCHAR support is added inĀ IMPALA-5092.

      Currently Impala does not pushdown predicates to Kudu unless the value is already a VARCHAR or explicitly casted. This should be enabled to make VARCHAR predicates more intuitive and performant.

      This should push down:

       select straight_join count(*) from ctas_varchar where vc > '1';
      

      However, right now this is required to push down the filter:

      select straight_join count(*) from ctas_varchar where vc > cast('1' as varchar(1));
      

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            Unassigned Unassigned
            granthenke Grant Henke

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