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https://issues.apache.org/jira/browse/APEXCORE-475?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15349768#comment-15349768
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Thomas Weise commented on APEXCORE-475:
---------------------------------------

The suggestion from [~davidyan] is backward compatible. The newer Apex client 
will be able for access older apps. The scenario you are bringing up is 
actually one of forward compatibility and I don't think that was ever discussed 
or advertised. Also I think that practical relevance of the scenario is 
limited, most users will use the CLI that they used to launch the app to also 
manage it. Finally... to me this does not look like a pressing issue, is this 
based on user feedback?

> change the YARN_APPLICATION_TYPE from DataTorrent to ApacheApex
> ---------------------------------------------------------------
>
>                 Key: APEXCORE-475
>                 URL: https://issues.apache.org/jira/browse/APEXCORE-475
>             Project: Apache Apex Core
>          Issue Type: Improvement
>    Affects Versions: 4.0.0
>            Reporter: Sandesh
>            Priority: Minor
>
> This change is backward incompatible to do in the minor release, as that is 
> also used to identify Apex applications.



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