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https://issues.apache.org/jira/browse/SPARK-17304?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Josh Rosen resolved SPARK-17304.
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Resolution: Fixed
Fix Version/s: 2.1.0
Issue resolved by pull request 14871
[https://github.com/apache/spark/pull/14871]
> TaskSetManager.abortIfCompletelyBlacklisted is a perf. hotspot in scheduler
> benchmark
> -------------------------------------------------------------------------------------
>
> Key: SPARK-17304
> URL: https://issues.apache.org/jira/browse/SPARK-17304
> Project: Spark
> Issue Type: Bug
> Components: Scheduler
> Affects Versions: 2.1.0
> Reporter: Josh Rosen
> Assignee: Josh Rosen
> Priority: Minor
> Fix For: 2.1.0
>
>
> If you run
> {code}
> sc.parallelize(1 to 100000, 100000).map(identity).count()
> {code}
> then {{TaskSetManager.abortIfCompletelyBlacklisted()}} is the number-one
> performance hotspot in the scheduler, accounting for over half of the time.
> This method was introduced in SPARK-15865, so this is a performance
> regression in 2.1.0-SNAPSHOT.
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