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https://issues.apache.org/jira/browse/TEZ-1190?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14637489#comment-14637489
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Rohini Palaniswamy commented on TEZ-1190:
-----------------------------------------

bq. Perhaps what is happening here is that there are 2 vertices inside VG1 
which are receiving the 2 inputs from V1
   Not sure what you mean by 2 vertices inside VG1.  But I believe this is what 
we were doing before.

VertexGroup vertexGroup = dag.createVertexGroup(groupName, groupMembers); // 
groupMembers is V1, V1


> Allow multiple edges between two vertexes
> -----------------------------------------
>
>                 Key: TEZ-1190
>                 URL: https://issues.apache.org/jira/browse/TEZ-1190
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Daniel Dai
>
> This will be helpful in some scenario. In particular example, we can merge 
> two small pipelines together in one pair of vertex. Note it is possible the 
> edge type between the two vertexes are different.



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