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  1. IMPALA
  2. IMPALA-8402

Add targeted perf tests for CHAR

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    Details

    • Type: Improvement
    • Status: Open
    • Priority: Minor
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: Infrastructure
    • Labels:

      Description

      This is follow-on from IMPALA-7331. We don't currently have targeted perf coverage for CHAR as a result of not having any CHAR-type columns in TPC-H or TPC-DS.

      CHAR is not a preferred data type in Impala because of the "interesting" space-padding semantics and limited codegen support but people do use it in production. It would be nice to have a way to measure perf regressions or take credit for perf wins if/when we enabled codegen for it.

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              • Assignee:
                Unassigned
                Reporter:
                tarmstrong Tim Armstrong
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                • Created:
                  Updated: