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https://issues.apache.org/jira/browse/HADOOP-15357?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16430573#comment-16430573
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Jim Brennan commented on HADOOP-15357:
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[~lmccay], yeah, I think that functionality is covered by existing tests.   
Thanks for the review!

 

> Configuration.getPropsWithPrefix no longer does variable substitution
> ---------------------------------------------------------------------
>
>                 Key: HADOOP-15357
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15357
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Jim Brennan
>            Assignee: Jim Brennan
>            Priority: Major
>         Attachments: HADOOP-15357.001.patch, HADOOP-15357.002.patch, 
> HADOOP-15357.003.patch
>
>
> Before [HADOOP-13556], Configuration.getPropsWithPrefix() used the 
> Configuration.get() method to get the value of the variables.   After 
> [HADOOP-13556], it now uses props.getProperty().
> The difference is that Configuration.get() does deprecation handling and more 
> importantly variable substitution on the value.  So if a property has a 
> variable specified with ${variable_name}, it will no longer be expanded when 
> retrieved via getPropsWithPrefix().
> Was this change in behavior intentional?  I am using this function in the fix 
> for [MAPREDUCE-7069], but we do want variable expansion to happen.



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