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https://issues.apache.org/jira/browse/SPARK-3508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14337595#comment-14337595
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Sean Owen commented on SPARK-3508:
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I agree with [~farrellee]. I don't think we can rename a bunch of properties. I 
think end user config is what exists in the end user documentation. I think the 
review process is here as in all things the right way to make sure the wrong 
things don't get exposed. Can we take this as the resolution?

> annotate the Spark configs to indicate which ones are meant for the end user
> ----------------------------------------------------------------------------
>
>                 Key: SPARK-3508
>                 URL: https://issues.apache.org/jira/browse/SPARK-3508
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>    Affects Versions: 1.1.0
>            Reporter: Thomas Graves
>
> Spark has lots of configs floating around.  To me configs are like api's and 
> we should make it clear which ones are meant for the end user and which ones 
> are only used internally.  We should decide on exactly how we want to do this.
> I've seen in the past users looking at the code and then using a config that 
> was meant to be internal and file a jira to document it.  Since there are 
> many comitters its easy for someone who doesn't have the history with that 
> config to just think we forgot to document it and then it becomes public.
> Perhaps we need to name internal configs specially (spark.internal.) or we 
> need to annotate them or something else.
> thoughts?



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