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  1. Spark
  2. SPARK-33092

Support subexpression elimination in ProjectExec

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Details

    • Improvement
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 3.1.0
    • 3.1.0
    • SQL
    • None

    Description

      Users frequently write repeatedly expression in projection. Currently in ProjectExec, we don't support subexpression elimination in Whole-stage codegen. We can support it to reduce redundant evaluation.

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        relates to

        Bug - A problem which impairs or prevents the functions of the product. SPARK-32989 Performance regression when selecting from str_to_map

        • Minor - Minor loss of function, or other problem where easy workaround is present.
        • Resolved
        links to

        Pull request #29975 [Github] Pull Request #29975 (viirya)

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            viirya L. C. Hsieh
            viirya L. C. Hsieh
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              Created:
              Updated:
              Resolved:

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