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https://issues.apache.org/jira/browse/SPARK-25221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16591097#comment-16591097
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Apache Spark commented on SPARK-25221:
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User 'gerashegalov' has created a pull request for this issue:
https://github.com/apache/spark/pull/22213

> [DEPLOY] Consistent trailing whitespace treatment of conf values
> ----------------------------------------------------------------
>
>                 Key: SPARK-25221
>                 URL: https://issues.apache.org/jira/browse/SPARK-25221
>             Project: Spark
>          Issue Type: Bug
>          Components: Deploy
>    Affects Versions: 2.3.1
>            Reporter: Gera Shegalov
>            Priority: Major
>
> When you use a custom line delimiter 
> {{spark.hadoop.textinputformat.record.delimiter}} that has a leading or a 
> trailing whitespace character it's only possible when specified via  
> {{--conf}} . Our pipeline consists of a highly customized generated jobs. 
> Storing all the config in a properities file is not only better for 
> readability but even necessary to avoid dealing with {{ARGS_MAX}} on 
> different OS. Spark should uniformly avoid trimming conf values in both 
> cases. 



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