[jira] [Assigned] (TEZ-4001) Allow mixture of CONCURRENT/SEQUENTIAL incoming edges on the same vertex

["Yingda Chen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TEZ-4001?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yingda Chen reassigned TEZ-4001:
--------------------------------

    Assignee: Yingda Chen

> Allow mixture of CONCURRENT/SEQUENTIAL incoming edges on the same vertex
> ------------------------------------------------------------------------
>
>                 Key: TEZ-4001
>                 URL: https://issues.apache.org/jira/browse/TEZ-4001
>             Project: Apache Tez
>          Issue Type: Task
>            Reporter: Yingda Chen
>            Assignee: Yingda Chen
>            Priority: Major
>
> This is an umbrella task of TEZ-3997.
> In the above two changes, we assume that a vertex’s incoming edges should have the same edge property in terms of Scheduling Type, i.e., they are either all SEQUENTIAL, or, all CONCURRENT.
> We shall extend beyond this assumption in this change to allow mixture of different incoming edge types, as exemplified in Fig.2. 
> Fig. 2 Vertex with mixture of input edges
> This change will mainly focus on enriching the VertexMangagerPlugin implementation that we introduced in our first change, namely, the VertexManagerWithConcurrentInputs. No API change is expected with this change.



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