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  1. IMPALA
  2. IMPALA-10228

Avoid or codegen std::map comparisons in partitioned top-n

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Details

    • Improvement
    • Status: Open
    • Minor
    • Resolution: Unresolved
    • Impala 4.0.0
    • None
    • Backend
    • ghx-label-12

    Description

      The partitioned top-n implementation currently uses std::map to store the heaps. We can't inline the tuple comparator easily because of the indirections in the standard library code.

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          relates to

          Improvement - An improvement or enhancement to an existing feature or task. IMPALA-9853 Push rank() predicates into sort

          • Major - Major loss of function.
          • Resolved

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              Unassigned Unassigned
              tarmstrong Tim Armstrong
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                Created:
                Updated: