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https://issues.apache.org/jira/browse/FLINK-23466?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17405019#comment-17405019
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Yingjie Cao commented on FLINK-23466:
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>>> Thanks for the investigation and writing down your suspicions. If the
>>>problem is with `BufferManager`, the bug was previously unnoticed, because
>>>exclusive buffers were never returned to the buffer pool? That's why only
>>>`buffersPerChannel=0` is surfacing the problem?
I think you are right, if there are exclusive buffers, the floating buffers are
optional.
>>> In a retrospect, maybe we should have randomised the number of exclusive
>>>buffers in {{org.apache.flink.streaming.util.TestStreamEnvironment}} to
>>>provide test coverage for 0 exclusive buffers mode in the ITCases?
I think it is a good idea.
> 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: Critical
> 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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