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  1. Spark
  2. SPARK-27839

Improve UTF8String.replace() / StringReplace performance

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.4.0
    • Fix Version/s: 3.0.0
    • Component/s: SQL
    • Labels:
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      Description

      The UTF8String.replace() function and StringReplace expression are missing a few common-case optimizations, such as avoiding copies when the replacement does not change the string and avoiding redundant copying / decoding of the search and replacement strings in case they are constants.

      I think there's room to significantly improve performance here, especially for single-character replacements.

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              • Assignee:
                joshrosen Josh Rosen
                Reporter:
                joshrosen Josh Rosen
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                • Created:
                  Updated:
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