[jira] [Commented] (FLINK-14206) Make fullRestart metric to count fine grained restarts as well

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

    [ https://issues.apache.org/jira/browse/FLINK-14206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16937585#comment-16937585 ] 

Zhu Zhu commented on FLINK-14206:
---------------------------------

[~trohrmann], how do you think of this proposal? If it's Ok, I can take it and start the work.

> Make fullRestart metric to count fine grained restarts as well
> --------------------------------------------------------------
>
>                 Key: FLINK-14206
>                 URL: https://issues.apache.org/jira/browse/FLINK-14206
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Coordination
>    Affects Versions: 1.9.0
>            Reporter: Zhu Zhu
>            Priority: Major
>             Fix For: 1.9.1
>
>
> With fine grained recovery introduced in 1.9.0, the {{fullRestart}} metric only counts how many times the entire graph has been restarted, not including the number of fine grained failure restarts.
> As many users leverage this metric for failure detecting monitoring and alerting, I'd propose to make it also count fine grained failure restarts.
> The concrete proposal is:
> 1. Add a counter  {{numberOfRestartCounter}} in ExecutionGraph to count all restarts. The counter is not to be registered to metric groups.
> 2. Let {{fullRestart}} query the value of the counter, instead of {{ExecutionGraph#globalModVersion}}
> 3. increment {{numberOfRestartCounter}} in {{ExecutionGraph#failGlobal}}
> 4. increment {{numberOfRestartCounter}} in {{ExecutionGraph#notifyExecutionChange}} where notifying the failover strategy, or maybe in {{AdaptedRestartPipelinedRegionStrategyNG}} to only count failovers really happened



--
This message was sent by Atlassian Jira
(v8.3.4#803005)