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https://issues.apache.org/jira/browse/FLINK-4894?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15612253#comment-15612253
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ASF GitHub Bot commented on FLINK-4894:
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Github user asfgit closed the pull request at:
https://github.com/apache/flink/pull/2690
> Don't block on buffer request after broadcastEvent
> ---------------------------------------------------
>
> Key: FLINK-4894
> URL: https://issues.apache.org/jira/browse/FLINK-4894
> Project: Flink
> Issue Type: Improvement
> Reporter: Ufuk Celebi
> Assignee: Ufuk Celebi
> Fix For: 1.2.0, 1.1.4
>
>
> After broadcasting an event (like the checkpoint barrier), the record writer
> might block on a buffer request although that buffer will only be needed on
> the next write on that channel.
> Instead of assuming that each serializer has a buffer set, we can change the
> logic in the writer to request the buffer when it requires one.
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