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https://issues.apache.org/jira/browse/SPARK-7826?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kay Ousterhout resolved SPARK-7826.
-----------------------------------
Resolution: Fixed
Fix Version/s: 1.5.0
Issue resolved by pull request 6352
[https://github.com/apache/spark/pull/6352]
> Suppress extra calling getCacheLocs.
> ------------------------------------
>
> Key: SPARK-7826
> URL: https://issues.apache.org/jira/browse/SPARK-7826
> Project: Spark
> Issue Type: Improvement
> Components: Scheduler, Spark Core
> Reporter: Takuya Ueshin
> Assignee: Takuya Ueshin
> Fix For: 1.5.0
>
>
> There are too many extra call method {{getCacheLocs}} for {{DAGScheduler}},
> which includes Akka communication.
> To improve {{DAGScheduler}} performance, suppress extra calling the method.
> In my application with over 1200 stages, the execution time became 3.8 min
> from 8.5 min with my patch.
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