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https://issues.apache.org/jira/browse/FLINK-24469?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated FLINK-24469:
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Labels: pull-request-available (was: )
> Incorrect calcualtion of the buffer size in case of channel data skew
> ---------------------------------------------------------------------
>
> Key: FLINK-24469
> URL: https://issues.apache.org/jira/browse/FLINK-24469
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Checkpointing
> Affects Versions: 1.14.0
> Reporter: Anton Kalashnikov
> Assignee: Anton Kalashnikov
> Priority: Major
> Labels: pull-request-available
>
> If only a couple out of 100 input channels are active then there is a huge
> throughput drop is observed. I suppose it happens because of the line inside
> of SingleInputGate#getBuffersInUseCount:
> {noformat}
> Math.max(1, channel.getBuffersInUseCount());
> {noformat}
> Right now, I don't think that it makes sense to have min value as 1, perhaps
> zero buffer in use is also ok.
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