[jira] [Commented] (BEAM-9065) Spark runner accumulates metrics (incorrectly) between runs

[Udi Meiri (Jira)]

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https://issues.apache.org/jira/browse/BEAM-9065?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17011100#comment-17011100
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Udi Meiri commented on BEAM-9065:
---------------------------------

2.18.0 has been cut 5 weeks ago. Let's push this fix to 2.19.0 and this as a 
Known Issue to the release notes.

> Spark runner accumulates metrics (incorrectly) between runs
> -----------------------------------------------------------
>
>                 Key: BEAM-9065
>                 URL: https://issues.apache.org/jira/browse/BEAM-9065
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-spark
>            Reporter: Etienne Chauchot
>            Assignee: Etienne Chauchot
>            Priority: Major
>             Fix For: 2.18.0
>
>          Time Spent: 0.5h
>  Remaining Estimate: 0h
>
> When pipeline.run() is called, MetricsAccumulator (wrapper of 
> MetricsContainerStepMap spark accumulator) is initialized. Spark needs this 
> class to be a singleton for failover. The problem is that when several 
> pipelines are run inside the same JVM, the initialization of 
> MetricsAccumulator singleton does not reset the underlying spark accumulator  
> causing metrics to be accumulated between runs.



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