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https://issues.apache.org/jira/browse/FLINK-28785?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xintong Song reassigned FLINK-28785:
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Assignee: Weijie Guo
> Hybrid shuffle consumer thread and upstream thread may have dead lock
> ----------------------------------------------------------------------
>
> Key: FLINK-28785
> URL: https://issues.apache.org/jira/browse/FLINK-28785
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Network
> Reporter: Weijie Guo
> Assignee: Weijie Guo
> Priority: Critical
> Fix For: 1.16.0
>
>
> In hybrid shuffle mode, subpartition view lock will be acquired by consumer
> thread, and further wait the read lock of MemoryDataManager. But
> MemoryDataManager may acquire write lock to make a global spilling decision,
> and then wait subpartition view lock to get consuming offset. In this case,
> deadlock will occurs.
> consumer thread : acqurie subpartition lock -> wait read lock.
> upstream thread : acquire write lock -> wait subpartition lock.
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