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https://issues.apache.org/jira/browse/SPARK-2664?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14079775#comment-14079775
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Apache Spark commented on SPARK-2664:
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User 'sryza' has created a pull request for this issue:
https://github.com/apache/spark/pull/1665
> Deal with `--conf` options in spark-submit that relate to flags
> ---------------------------------------------------------------
>
> Key: SPARK-2664
> URL: https://issues.apache.org/jira/browse/SPARK-2664
> Project: Spark
> Issue Type: Bug
> Reporter: Patrick Wendell
> Assignee: Sandy Ryza
> Priority: Blocker
>
> If someone sets a spark conf that relates to an existing flag `--master`, we
> should set it correctly like we do with the defaults file. Otherwise it can
> have confusing semantics. I noticed this after merging it, otherwise I would
> have mentioned it in the review.
> I think it's as simple as modifying loadDefaults to check the user-supplied
> options also. We might change it to loadUserProperties since it's no longer
> just the defaults file.
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