zhijiang created FLINK-14553:
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Summary: Respect non-blocking output in StreamTask#processInput
Key: FLINK-14553
URL: https://issues.apache.org/jira/browse/FLINK-14553
Project: Flink
Issue Type: Sub-task
Components: Runtime / Task
Reporter: zhijiang
Assignee: zhijiang
Fix For: 1.10.0
The non-blocking output was introduced in FLINK-14396 and FLINK-14498 to solve
the problem of handling the checkpoint barrier in the case of backpressure.
In order to make the whole process through, {{StreamInputProcessor}} should be
allowed to process input elements if the output is also available.
The default core size of {{LocalBufferPool}} for {{ResultPartition}} should
also be increased by 1 in order not to impact the performance in the new way,
and this tiny memory overhead could be ignored in practice.
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