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https://issues.apache.org/jira/browse/SPARK-58923?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SPARK-58923:
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Labels: pull-request-available (was: )
> Bound the output Arrow batch size of Python UDF workers
> -------------------------------------------------------
>
> Key: SPARK-58923
> URL: https://issues.apache.org/jira/browse/SPARK-58923
> Project: Spark
> Issue Type: Improvement
> Components: PySpark
> Affects Versions: 4.4.0
> Reporter: Yicong Huang
> Priority: Major
> Labels: pull-request-available
>
> An Arrow-based Python UDF worker can emit a single oversized output
> RecordBatch (for example, applyInPandas produces one batch per group, so a
> large group yields one large batch), which strains the JVM and downstream
> operators. We need a Python-side (worker-side) mechanism to resize such
> output batches down toward a configurable byte limit before they are sent to
> the JVM.
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