Arvid Heise created FLINK-20030:
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Summary: Barrier announcement causes outdated
RemoteInputChannel#numBuffersOvertaken
Key: FLINK-20030
URL: https://issues.apache.org/jira/browse/FLINK-20030
Project: Flink
Issue Type: Bug
Reporter: Arvid Heise
{{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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