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https://issues.apache.org/jira/browse/TEZ-724?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13877216#comment-13877216
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Bikas Saha commented on TEZ-724:
--------------------------------

Also, it would be good to have a built in NullEdgeManager in the runtime 
library that can be used by anyone who cannot set a working edge manager during 
compile time. So people dont have to create dummy classes of their own.

> DAG API to specify and add a custom data movement edge
> ------------------------------------------------------
>
>                 Key: TEZ-724
>                 URL: https://issues.apache.org/jira/browse/TEZ-724
>             Project: Apache Tez
>          Issue Type: Improvement
>            Reporter: Bikas Saha
>            Assignee: Siddharth Seth
>         Attachments: TEZ-724.wip.1.txt
>
>
> We will need a CUSTOM data movement type enum. Also, optionally, a user 
> should be able to specify a custom edge manager to route using custom logic.



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