[jira] [Commented] (SPARK-4924) Factor out code to launch Spark applications into a separate library

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-4924?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14266897#comment-14266897 ] 

Apache Spark commented on SPARK-4924:
-------------------------------------

User 'vanzin' has created a pull request for this issue:
https://github.com/apache/spark/pull/3916

> Factor out code to launch Spark applications into a separate library
> --------------------------------------------------------------------
>
>                 Key: SPARK-4924
>                 URL: https://issues.apache.org/jira/browse/SPARK-4924
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>            Reporter: Marcelo Vanzin
>         Attachments: spark-launcher.txt
>
>
> One of the questions we run into rather commonly is "how to start a Spark application from my Java/Scala program?". There currently isn't a good answer to that:
> - Instantiating SparkContext has limitations (e.g., you can only have one active context at the moment, plus you lose the ability to submit apps in cluster mode)
> - Calling SparkSubmit directly is doable but you lose a lot of the logic handled by the shell scripts
> - Calling the shell script directly is doable,  but sort of ugly from an API point of view.
> I think it would be nice to have a small library that handles that for users. On top of that, this library could be used by Spark itself to replace a lot of the code in the current shell scripts, which have a lot of duplication.



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