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https://issues.apache.org/jira/browse/SPARK-18256?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yin Huai resolved SPARK-18256.
------------------------------
Resolution: Fixed
Fix Version/s: 2.2.0
Issue resolved by pull request 15756
[https://github.com/apache/spark/pull/15756]
> Improve performance of event log replay in HistoryServer based on profiler
> results
> ----------------------------------------------------------------------------------
>
> Key: SPARK-18256
> URL: https://issues.apache.org/jira/browse/SPARK-18256
> Project: Spark
> Issue Type: Improvement
> Reporter: Josh Rosen
> Assignee: Josh Rosen
> Fix For: 2.2.0
>
>
> Profiling event log replay in the HistoryServer reveals Json4S control flow
> exceptions and `Utils.getFormattedClassName` calls as significant
> bottlenecks. Eliminating these halves the time to replay long event logs.
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