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https://issues.apache.org/jira/browse/SPARK-30557?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17018256#comment-17018256
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Marcelo Masiero Vanzin commented on SPARK-30557:
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I don't exactly remember what that does, but a quick looks seem to indicate 
it's basically another way of setting JVM options, used in some internal code. 
We have {{--driver-java-options}} for users already.

> Add public documentation for SPARK_SUBMIT_OPTS
> ----------------------------------------------
>
>                 Key: SPARK-30557
>                 URL: https://issues.apache.org/jira/browse/SPARK-30557
>             Project: Spark
>          Issue Type: Improvement
>          Components: Deploy, Documentation
>    Affects Versions: 2.4.4
>            Reporter: Nicholas Chammas
>            Priority: Minor
>
> Is `SPARK_SUBMIT_OPTS` part of Spark's public interface? If so, it needs some 
> documentation. I cannot see it documented 
> [anywhere|https://github.com/apache/spark/search?q=SPARK_SUBMIT_OPTS&unscoped_q=SPARK_SUBMIT_OPTS]
>  in the docs.
> How do you use it? What is it useful for? What's an example usage? etc.



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