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https://issues.apache.org/jira/browse/SPARK-12803?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-12803.
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Resolution: Won't Fix
> Consider adding ability to profile specific instances of executors in spark
> ---------------------------------------------------------------------------
>
> Key: SPARK-12803
> URL: https://issues.apache.org/jira/browse/SPARK-12803
> Project: Spark
> Issue Type: Improvement
> Components: Java API
> Reporter: Rajesh Balamohan
>
> It would be useful to profile specific instances of executors as opposed to
> adding profiler details to all executors via
> "spark.executor.extraJavaOptions".
> Setting the number of executors to just 1 and profiling wouldn't be much
> useful (in some cases, most of the time with single executor mode would be
> spent in terms of reading data from remote node). At the same time, setting
> profiling option to all executors could just create too many number of
> snapshots; making it harder to analyze.
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