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https://issues.apache.org/jira/browse/FLINK-20833?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17267586#comment-17267586
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Zhenqiu Huang commented on FLINK-20833:
---------------------------------------

[~rmetzger]
Thanks for the comments. 
1) I added comments on the new metrics. I think it is also reasonable to just 
use numRestarts in most cases.
2) Added wiki page in the advanced section.

> Expose pluggable interface for  exception analysis and metrics reporting in 
> Execution Graph
> -------------------------------------------------------------------------------------------
>
>                 Key: FLINK-20833
>                 URL: https://issues.apache.org/jira/browse/FLINK-20833
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Coordination
>    Affects Versions: 1.12.0
>            Reporter: Zhenqiu Huang
>            Assignee: Zhenqiu Huang
>            Priority: Minor
>              Labels: pull-request-available
>
> For platform users of Apache flink, people usually want to classify the 
> failure reason( for example user code, networking, dependencies and etc) for 
> Flink jobs and emit metrics for those analyzed results. So that platform can 
> provide an accurate value for system reliability by distinguishing the 
> failure due to user logic from the system issues. 



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