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https://issues.apache.org/jira/browse/FLINK-22325?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Roman Khachatryan closed FLINK-22325.
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Fix Version/s: (was: 1.12.3)
Resolution: Invalid
Closing as invalid (as there is a memory fence after compareAndSet for
visibility; and iteration can not proceed simultaneously with close because of
state check)
> Channel state iterator is accessed concurrently without proper synchronization
> ------------------------------------------------------------------------------
>
> Key: FLINK-22325
> URL: https://issues.apache.org/jira/browse/FLINK-22325
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Checkpointing
> Affects Versions: 1.12.2, 1.13.0
> Reporter: Roman Khachatryan
> Assignee: Roman Khachatryan
> Priority: Critical
> Labels: pull-request-available
> Fix For: 1.13.0
>
>
> ChannelStateWriter adds input/output data that is written by a dedicated
> thread.
> The data is passed as CloseableIterator.
> In some cases, iterator.close can be called from the task thread which can
> lead to double release of buffers.
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