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https://issues.apache.org/jira/browse/SPARK-54744?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ruifeng Zheng reassigned SPARK-54744:
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Assignee: Tian Gao
> Only invalidate import cache when necessary in worker process
> -------------------------------------------------------------
>
> Key: SPARK-54744
> URL: https://issues.apache.org/jira/browse/SPARK-54744
> Project: Spark
> Issue Type: Improvement
> Components: PySpark
> Affects Versions: 4.2.0
> Reporter: Tian Gao
> Assignee: Tian Gao
> Priority: Major
> Labels: pull-request-available
>
> Each importlib.invalidate_caches call could take tens of ms - which is a
> pretty significant number. When we reuse workers, this is unnecessary because
> we are not introducing any new paths. We should only do it when necessary.
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