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https://issues.apache.org/jira/browse/FLINK-20758?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17298070#comment-17298070
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Yingjie Cao commented on FLINK-20758:
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We decide to switch to managed memory in 1.13 and for 1.12, we are not planing
to do the improvement for now unless there is a demand from the community.
> Use region file mechanism for shuffle data reading before we switch to
> managed memory
> -------------------------------------------------------------------------------------
>
> Key: FLINK-20758
> URL: https://issues.apache.org/jira/browse/FLINK-20758
> Project: Flink
> Issue Type: Sub-task
> Components: Runtime / Network
> Affects Versions: 1.12.0
> Reporter: Yingjie Cao
> Priority: Major
> Labels: usability
>
> FLINK-15981 implemented region file based data reader to solve the direct
> memory OOM issue introduced by usage of unmanaged direct memory, however only
> for BoundedBlockingResultPartition. We can introduce it to sort-merge based
> blocking shuffle to avoid the similar direct memory OOM problem which can
> improve the usability a lot.
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