[jira] [Updated] (FLINK-14811) Replace Java Streams with for-loops in vertex input checking

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-14811?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated FLINK-14811:
-----------------------------------
    Labels: pull-request-available  (was: )

> Replace Java Streams with for-loops in vertex input checking
> ------------------------------------------------------------
>
>                 Key: FLINK-14811
>                 URL: https://issues.apache.org/jira/browse/FLINK-14811
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Coordination
>    Affects Versions: 1.10.0
>            Reporter: Zhu Zhu
>            Assignee: Zhu Zhu
>            Priority: Major
>              Labels: pull-request-available
>
> Vertex input checking is invoked in lazily triggered scheduling by a FINISHED vertex state update RPC or a {{scheduleOrUpdateConsumers}} RPC. 
> Java Streams is used in it, but it should be avoided since it is performance critical code. See ref [1] and [2].
> We should refactor these Java Streams to improve the performance, for both legacy scheduler and NG schedulers.
> cc [~sewen] [~gjy]
> [1] [flink code style guide|https://flink.apache.org/contributing/code-style-and-quality-java.html]
> [2] [discussion & performance test|https://issues.apache.org/jira/browse/FLINK-14735?focusedCommentId=16974209&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-16974209] which compares the performance.



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