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https://issues.apache.org/jira/browse/TEZ-800?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13893857#comment-13893857
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Bikas Saha commented on TEZ-800:
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That is correct. That is the current behavior. In general, there can be a mix
of edge types connected to a vertex. We currently support the case of -1 on
source and destination mentioned above since its required for functionality but
in general we havent solved the problem of verifying the graph is correctly
specified with a mix of static and dynamic concurrency and mix of edge types.
Once we have more of that in place then we can ease these restrictions.
> One-one edge with parallelism -1 fails if source vertex parallelism is not -1
> as well
> -------------------------------------------------------------------------------------
>
> Key: TEZ-800
> URL: https://issues.apache.org/jira/browse/TEZ-800
> Project: Apache Tez
> Issue Type: Bug
> Affects Versions: 0.3.0
> Reporter: Rohini Palaniswamy
> Assignee: Bikas Saha
>
> // no input initializers. At this moment, only other case is 1-1 edge
> // with uninitialized sources
> boolean hasOneToOneUninitedSource = false;
> for (Map.Entry<Vertex, Edge> entry :
> vertex.sourceVertices.entrySet()) {
> if (entry.getValue().getEdgeProperty().getDataMovementType() ==
> DataMovementType.ONE_TO_ONE) {
> if (entry.getKey().getTotalTasks() == -1) {
> hasOneToOneUninitedSource = true;
> break;
> }
> }
> }
> This checks for the source vertex which has the 1-1 edge to also have -1
> parallelism.
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