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From "Yingda Chen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (TEZ-4001) Allow mixture of CONCURRENT/SEQUENTIAL incoming edges on the same vertex
Date Fri, 05 Oct 2018 19:37:00 GMT
Yingda Chen created TEZ-4001:
--------------------------------

             Summary: 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


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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