Anton Kalashnikov created FLINK-24469:
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Summary: 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
Reporter: Anton Kalashnikov
Assignee: Anton Kalashnikov
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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