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https://issues.apache.org/jira/browse/FLINK-15030?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Piotr Nowojski closed FLINK-15030.
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Fix Version/s: 1.9.2
Resolution: Fixed
merged commit 1325727
> Potential deadlock for bounded blocking ResultPartition.
> --------------------------------------------------------
>
> Key: FLINK-15030
> URL: https://issues.apache.org/jira/browse/FLINK-15030
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Network
> Affects Versions: 1.9.0, 1.9.1
> Reporter: Yingjie Cao
> Assignee: Yingjie Cao
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.9.2
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Currently, the BoundedBlockingSubpartition relies on the add of the next
> BufferConsumer to flush and recycle the previous one, which means we need at
> least (numsubpartition + 1) buffers to make the bounded blocking
> ResultPartition work. However, the ResultPartitionFactory gives only
> (numsubpartition) required buffers to the BoundedBlockingSubpartition which
> may lead to deadlock.
> This problem exists only in version 1.9. In version 1.10 (master), this
> problem has been fixed by this commit:
> 2c8b4ef572f05bf4740b7e204af1e5e709cd945c.
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