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https://issues.apache.org/jira/browse/FLINK-21778?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhu Zhu reassigned FLINK-21778:
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Assignee: Yingjie Cao
> Use heap memory instead of direct memory as index entry cache for sort-merge
> shuffle
> ------------------------------------------------------------------------------------
>
> Key: FLINK-21778
> URL: https://issues.apache.org/jira/browse/FLINK-21778
> Project: Flink
> Issue Type: Sub-task
> Components: Runtime / Network
> Affects Versions: 1.12.0
> Reporter: Yingjie Cao
> Assignee: Yingjie Cao
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.13.0
>
>
> Currently, the sort-merge shuffle implementation uses a piece of direct
> memory as index entry cache for acceleration. We can use heap memory instead
> to reduce the usage of direct memory which further reduces the possibility of
> OutOfMemoryError.
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