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https://issues.apache.org/jira/browse/SPARK-38047?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alex Holmes updated SPARK-38047:
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Description:
Currently executor rolling will always kill one executor every
{{{}spark.kubernetes.executor.rollInterval{}}}. This may not be optimal in
cases where the executor metric isn't an outlier compared to other executors.
There is a cost associated with killing executors (ramp-up time for new
executors for example) which applications may not want to incur for non-outlier
executors.
This ticket would add the ability to only kill executors if they are outliners
via the introduction of a new roll policy.
was:
Currently executor rolling will always kill one executor every
{{{}spark.kubernetes.executor.rollInterval{}}}. For some of the policies this
may not be optimal in cases where the executor metric isn't an outlier compared
to other executors. There is a cost associated with killing executors (ramp-up
time for new executors for example) which applications may not want to incur
for non-outlier executors.
This ticket would add the ability to only kill executors if they are outliners.
> Add OUTLIER_NO_FALLBACK executor roll policy
> --------------------------------------------
>
> Key: SPARK-38047
> URL: https://issues.apache.org/jira/browse/SPARK-38047
> Project: Spark
> Issue Type: Sub-task
> Components: Kubernetes
> Affects Versions: 3.3.0
> Reporter: Alex Holmes
> Assignee: Alex Holmes
> Priority: Major
> Fix For: 3.3.0
>
>
> Currently executor rolling will always kill one executor every
> {{{}spark.kubernetes.executor.rollInterval{}}}. This may not be optimal in
> cases where the executor metric isn't an outlier compared to other executors.
> There is a cost associated with killing executors (ramp-up time for new
> executors for example) which applications may not want to incur for
> non-outlier executors.
>
> This ticket would add the ability to only kill executors if they are
> outliners via the introduction of a new roll policy.
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