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https://issues.apache.org/jira/browse/SPARK-41188?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17635632#comment-17635632
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Apache Spark commented on SPARK-41188:
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User 'WeichenXu123' has created a pull request for this issue:
https://github.com/apache/spark/pull/38699

> Set executorEnv OMP_NUM_THREADS to be spark.task.cpus by default for spark 
> executor JVM processes
> -------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-41188
>                 URL: https://issues.apache.org/jira/browse/SPARK-41188
>             Project: Spark
>          Issue Type: Improvement
>          Components: ML, Spark Core
>    Affects Versions: 3.3.1
>            Reporter: Weichen Xu
>            Assignee: Weichen Xu
>            Priority: Major
>             Fix For: 3.4.0
>
>
> Set executorEnv OMP_NUM_THREADS to be spark.task.cpus by default for spark 
> executor JVM processes, this is for limiting the thread number for OpenBLAS 
> routine to the number of cores assigned to this executor because some spark 
> ML algorithms calls OpenBlAS via netlib-java



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