[jira] [Assigned] (FLINK-14712) Add NetWork metric for IOMetricsInfo

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

     [ https://issues.apache.org/jira/browse/FLINK-14712?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Piotr Nowojski reassigned FLINK-14712:
--------------------------------------

    Assignee: lining

> Add NetWork metric for IOMetricsInfo
> ------------------------------------
>
>                 Key: FLINK-14712
>                 URL: https://issues.apache.org/jira/browse/FLINK-14712
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Metrics, Runtime / Network, Runtime / REST
>            Reporter: lining
>            Assignee: lining
>            Priority: Major
>         Attachments: image-2019-11-12-14-30-16-130.png
>
>
> h4. (1) The current monitor is heavy-weight. 
>  *   Backpressure monitoring works by repeatedly taking stack trace samples of your running tasks.
> h4. (2) It is difficult to find out which vertex is the source  of  backpressure.
>  * User need to know current and upstream's network metric to judge current whether is the source of backpressure. Now user has to record relevant information.
> h3. Proposed Changes
> Update IOMetricsInfo add  outPoolUsage, inputExclusiveBuffersUsage, inputFloatingBuffersUsage:
> {code:java}
> public final class IOMetricsInfo {
>     private final float outPoolUsage;
>     private final float inputExclusiveBuffersUsage;
>     private final float inputFloatingBuffersUsage;
> }
> {code}
> JobDetailsInfo.JobVertexDetailsInfo merge use Math.max.(ps: outPoolUsage is from upstream)
> According to   !image-2019-11-12-14-30-16-130.png!



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