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https://issues.apache.org/jira/browse/FLINK-9755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16549711#comment-16549711
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ASF GitHub Bot commented on FLINK-9755:
---------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/flink/pull/6272
> Exceptions in RemoteInputChannel#notifyBufferAvailable() are not propagated
> to the responsible thread
> -----------------------------------------------------------------------------------------------------
>
> Key: FLINK-9755
> URL: https://issues.apache.org/jira/browse/FLINK-9755
> Project: Flink
> Issue Type: Bug
> Components: Network
> Affects Versions: 1.5.0
> Reporter: Nico Kruber
> Assignee: Nico Kruber
> Priority: Critical
> Labels: pull-request-available
> Fix For: 1.5.2, 1.6.0
>
>
> The credit-based flow control implementation of
> RemoteInputChannel#notifyBufferAvailable() does not forward errors (like the
> {{IllegalStateException}}) to the thread that is being notified. The calling
> code at {{LocalBufferPool#recycle}}, however, relies on the callback
> forwarding errors and completely ignores any failures.
> Therefore, we could end up with a program waiting forever for the callback
> and not even a failure message in the logs.
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