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https://issues.apache.org/jira/browse/SPARK-3554?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14136250#comment-14136250
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Apache Spark commented on SPARK-3554:
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User 'davies' has created a pull request for this issue:
https://github.com/apache/spark/pull/2417
> handle large dataset in closure of PySpark
> ------------------------------------------
>
> Key: SPARK-3554
> URL: https://issues.apache.org/jira/browse/SPARK-3554
> Project: Spark
> Issue Type: Improvement
> Components: PySpark
> Reporter: Davies Liu
> Assignee: Davies Liu
>
> Sometimes there are large dataset used in closure and user forget to use
> broadcast for it, then the serialized command will become huge.
> py4j can not handle large objects efficiently, we should compress the
> serialized command and user broadcast for it if it's huge.
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