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https://issues.apache.org/jira/browse/FLINK-14127?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Piotr Nowojski reassigned FLINK-14127:
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Assignee: (was: Yadong Xie)
> Better BackPressure Detection in WebUI
> --------------------------------------
>
> Key: FLINK-14127
> URL: https://issues.apache.org/jira/browse/FLINK-14127
> Project: Flink
> Issue Type: Sub-task
> Components: Runtime / Web Frontend
> Affects Versions: 1.10.0
> Reporter: Yadong Xie
> Priority: Major
> Fix For: 1.13.0
>
> Attachments: 屏幕快照 2019-09-19 下午6.00.05.png, 屏幕快照 2019-09-19
> 下午6.00.57.png, 屏幕快照 2019-09-19 下午6.01.43.png
>
>
> According to the
> [Document|https://ci.apache.org/projects/flink/flink-docs-release-1.9/monitoring/back_pressure.html],
> the backpressure monitor only triggered on request and it is currently not
> available via metrics. This means that in the web UI we have no way to show
> all the backpressure state of all vertexes at the same time. The users need
> to click every vertex to get its backpressure state.
> !屏幕快照 2019-09-19 下午6.00.05.png|width=510,height=197!
> In Flink 1.9.0 and above, there are four metrics available(outPoolUsage,
> inPoolUsage, floatingBuffersUsage, exclusiveBuffersUsage), we can use these
> metrics to determine if there are possible backpressure, and then use the
> backpressure REST API to confirm it.
> Here is a table get from
> [https://flink.apache.org/2019/07/23/flink-network-stack-2.html]
> !屏幕快照 2019-09-19 下午6.00.57.png|width=516,height=304!
>
> We can display the possible backpressure status on the vertex graph, thus
> users can get all the vertex backpressure states and locate the potential
> problem quickly.
>
> !屏幕快照 2019-09-19 下午6.01.43.png|width=572,height=277!
>
> REST API needed:
> add outPoolUsage, inPoolUsage, floatingBuffersUsage, exclusiveBuffersUsage
> metrics for each vertex in the /jobs/:jobId API
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