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https://issues.apache.org/jira/browse/FLINK-14138?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17227309#comment-17227309
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Chesnay Schepler commented on FLINK-14138:
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With declarative resource management in place we could even expose the
requirements and acquired resources.
> 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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