Github user uce commented on a diff in the pull request:
https://github.com/apache/flink/pull/640#discussion_r31136509
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/executiongraph/ExecutionGraph.java
---
@@ -264,21 +266,21 @@ public void attachJobGraph(List<AbstractJobVertex>
topologiallySorted) throws Jo
LOG.debug(String.format("Attaching %d topologically
sorted vertices to existing job graph with %d "
--- End diff --
We have to check that the parallelism of both vertices are the same,
because the runtime results are already partitioned. I think a good error msg
is the best solution at this point.
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