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https://issues.apache.org/jira/browse/SPARK-59531?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SPARK-59531:
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Labels: pull-request-available (was: )
> Avoid a per-match MatchResult allocation in regexp_extract,
> regexp_extract_all, and regexp_instr
> ------------------------------------------------------------------------------------------------
>
> Key: SPARK-59531
> URL: https://issues.apache.org/jira/browse/SPARK-59531
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 4.1.0
> Reporter: David Mollitor
> Priority: Minor
> Labels: pull-request-available
>
> h2. Summary
> {{{}RegExpExtractBase.extract{}}}, {{{}RegExpExtractBase.extractAll{}}}, and
> {{RegExpInStr}} call {{Matcher.toMatchResult()}} on every match only to read
> values that are already available on the {{Matcher}} itself.
> {{toMatchResult()}} allocates an immutable snapshot of the match state
> (including a copy of the groups {{{}int[]{}}}), so this is one throwaway
> allocation per match on the {{{}regexp_extract{}}},
> {{{}regexp_extract_all{}}}, and {{regexp_instr}} hot paths.
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