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https://issues.apache.org/jira/browse/HADOOP-15357?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16423004#comment-16423004
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Jim Brennan commented on HADOOP-15357:
--------------------------------------
I think you can just replace this:
{code:java}
String value = props.getProperty(name);
{code}
with this:
{code:java}
String value = get(name);
{code}
I'm not certain if we need to worry about the deprecation stuff in
Configuration.get() for this. If it's not needed, then I think this would be
all we'd need:
{code:java}
String value = substituteVars(props.getProperty(name));
{code}
> 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
> Priority: Major
>
> 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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