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https://issues.apache.org/jira/browse/FLINK-20030?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17235948#comment-17235948
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Arvid Heise commented on FLINK-20030:
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Merged into master as a97fe1f3f24993ff8cce2dd008281f162022fa27.
> Barrier announcement causes outdated RemoteInputChannel#numBuffersOvertaken
> ---------------------------------------------------------------------------
>
> Key: FLINK-20030
> URL: https://issues.apache.org/jira/browse/FLINK-20030
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Checkpointing, Runtime / Network
> Affects Versions: 1.12.0
> Reporter: Arvid Heise
> Assignee: Roman Khachatryan
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.12.0
>
>
> {{numBuffersOvertaken}} is set when the announcement is enqueued, but it can
> take quite a while until the checkpoint is actually started with quite a
> non-priority buffers being drained.
> We should move away from {{numBuffersOvertaken}} and use sequence numbers.
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