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https://issues.apache.org/jira/browse/FLINK-23466?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17405097#comment-17405097
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Piotr Nowojski commented on FLINK-23466:
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I've bumped the priority to the release blocker, as I think we can hit this
problem even with the default configuration options if there are just simply
not enough buffers in the buffer pool. Before FLINK-16641 Flink would fail if
there are no exclusive buffers for the input channels. No that's allowed, but
can lead to this deadlock.
> UnalignedCheckpointITCase hangs on Azure
> ----------------------------------------
>
> Key: FLINK-23466
> URL: https://issues.apache.org/jira/browse/FLINK-23466
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Checkpointing
> Affects Versions: 1.14.0
> Reporter: Dawid Wysakowicz
> Assignee: Yingjie Cao
> Priority: Blocker
> Labels: test-stability
> Fix For: 1.14.0
>
>
> https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=20813&view=logs&j=a57e0635-3fad-5b08-57c7-a4142d7d6fa9&t=2ef0effc-1da1-50e5-c2bd-aab434b1c5b7&l=16016
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