[jira] [Commented] (FLINK-14138) Show Pending Slots in Job Detail

["Chesnay Schepler (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-14138?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17186439#comment-17186439 ] 

Chesnay Schepler commented on FLINK-14138:
------------------------------------------

This would expose some very low-level parts of Flink, and does not appear to be compatible with FLIP-138.

> Show Pending Slots in Job Detail
> --------------------------------
>
>                 Key: FLINK-14138
>                 URL: https://issues.apache.org/jira/browse/FLINK-14138
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / REST, Runtime / Web Frontend
>            Reporter: Yadong Xie
>            Priority: Major
>         Attachments: 屏幕快照 2019-09-20 下午12.04.00.png, 屏幕快照 2019-09-20 下午12.04.05.png
>
>
> It is hard to troubleshoot when all subtasks are always on the SCHEDULED status(just like the screenshot below) when users submit a job.
> !屏幕快照 2019-09-20 下午12.04.00.png|width=494,height=258!
> The most common reason for this problem is that vertex has applied for more resources than the cluster has. A pending slots tab could help users to check which vertex or subtask is blocked.
> !屏幕快照 2019-09-20 下午12.04.05.png|width=576,height=163!
>  
> REST API needed:
> add /jobs/:jobid/pending-slots API to get pending slots data.



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