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https://issues.apache.org/jira/browse/TEZ-724?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13877319#comment-13877319
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Siddharth Seth commented on TEZ-724:
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Not sure what this NullEdgeManager would do - throw exceptions for all it's
implementations ?, don't think caching in the EdgeManager itself is a good
idea. Any kind of routing performed by this would be incorrect behavior.
> 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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