[jira] [Updated] (SPARK-57025) SortMergeJoinExec: extract JoinHelper.resetMatched for full-outer BitSet bookkeeping

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-57025?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated SPARK-57025:
-----------------------------------
    Labels: pull-request-available  (was: )

> SortMergeJoinExec: extract JoinHelper.resetMatched for full-outer BitSet bookkeeping
> ------------------------------------------------------------------------------------
>
>                 Key: SPARK-57025
>                 URL: https://issues.apache.org/jira/browse/SPARK-57025
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 5.0.0
>            Reporter: Gengliang Wang
>            Priority: Major
>              Labels: pull-request-available
>
> {{SortMergeJoinExec.codegenFullOuter}} and its interpreted counterpart {{SortMergeFullOuterJoinScanner.findMatchingRows}} both duplicate the "reuse the BitSet if its capacity is enough, otherwise allocate a new one" idiom for tracking matched left/right rows.
> Extract it into a static helper
> {code:java}
> JoinHelper.resetMatched(BitSet matched, int bufferSize): BitSet
> {code}
> and call it from the four sites (left + right in each method). Replaces ~16 inline lines with 4 helper calls and keeps the codegen and interpreted paths in lockstep.



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