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https://issues.apache.org/jira/browse/SPARK-2673?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Patrick Wendell updated SPARK-2673:
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Component/s: Spark Core
> Improve Spark so that we can attach Debugger to Executors easily
> ----------------------------------------------------------------
>
> Key: SPARK-2673
> URL: https://issues.apache.org/jira/browse/SPARK-2673
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Reporter: Kousuke Saruta
>
> In current implementation, we are difficult to attach debugger to each
> Executor in the cluster.
> There are reasons as follows.
> 1) It's difficult for Executors running on the same machine to open debug
> port because we can only pass same JVM options to all executors.
> 2) Even if we can open unique debug port to each Executors running on the
> same machine, it's a bother to check debug port of each executor.
> To solve those problem, I think following 2 improvement is needed.
> 1) Enable executor to open unique debug port on a machine.
> 2) Expand WebUI to be able to show debug ports opening in each executor.
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