[jira] [Closed] (FLINK-14553) Respect non-blocking output in StreamTask#processInput

["Piotr Nowojski (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-14553?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Piotr Nowojski closed FLINK-14553.
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> 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
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 1.10.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> 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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