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From "Jim Brennan (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-15357) Configuration.getPropsWithPrefix no longer does variable substitution
Date Mon, 02 Apr 2018 18:07:00 GMT
Jim Brennan created HADOOP-15357:

             Summary: 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

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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