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https://issues.apache.org/jira/browse/FLINK-32576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17744412#comment-17744412
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Weijie Guo commented on FLINK-32576:
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master(1.18) via 1786e2ddfd1a1df5e907f5719138f63e819cb1a3.
> ProducerMergedPartitionFileIndex supports spilling to file
> ----------------------------------------------------------
>
> Key: FLINK-32576
> URL: https://issues.apache.org/jira/browse/FLINK-32576
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Network
> Affects Versions: 1.18.0
> Reporter: Yuxin Tan
> Assignee: Yuxin Tan
> Priority: Major
> Labels: pull-request-available
>
> When running a very large-scale job, ProducerMergedPartitionFileIndex may
> occupy too much heap memory and cause OOM.
> To resolve the issue, ProducerMergedPartitionFileIndex should support
> spilling to file to release the occupied memory when necessary.
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