Thomas Graves created YARN-1931:
-----------------------------------

             Summary: YARN-1824 in 2.4 broke compatibility with previous 
releases
                 Key: YARN-1931
                 URL: https://issues.apache.org/jira/browse/YARN-1931
             Project: Hadoop YARN
          Issue Type: Bug
          Components: applications
    Affects Versions: 2.4.0
            Reporter: Thomas Graves
            Priority: Blocker


YARN-1824 broke compatibility with previous 2.x releases by changes the API's 
in org.apache.hadoop.yarn.util.Apps.{setEnvFromInputString,addToEnvironment}  
The old api should be added back in.

This affects any ApplicationMasters who were using this api.  It also breaks 
previously built MapReduce libraries from working with the new Yarn release as 
MR uses this api. 



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