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Posted to issues@spark.apache.org by "Hyukjin Kwon (Jira)" <ji...@apache.org> on 2024/06/03 01:59:00 UTC

[jira] [Resolved] (SPARK-48496) Use static regex Pattern instances in common/utils JavaUtils

     [ https://issues.apache.org/jira/browse/SPARK-48496?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyukjin Kwon resolved SPARK-48496.
----------------------------------
    Fix Version/s: 4.0.0
       Resolution: Fixed

Fixed in https://github.com/apache/spark/pull/46829

> Use static regex Pattern instances in common/utils JavaUtils
> ------------------------------------------------------------
>
>                 Key: SPARK-48496
>                 URL: https://issues.apache.org/jira/browse/SPARK-48496
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>    Affects Versions: 4.0.0
>            Reporter: Josh Rosen
>            Assignee: Josh Rosen
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 4.0.0
>
>
> Some methods in JavaUtils.java are recompiling regexes on every invocation; we should instead store a single cached Pattern.
> This is a minor perf. issue that I spotted in the context of other profiling. Not a huge bottleneck in the grand scheme of things, but simple and straightforward to fix.



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