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https://issues.apache.org/jira/browse/FLINK-1235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14208609#comment-14208609
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Stephan Ewen commented on FLINK-1235:
-------------------------------------
This branch has a test that reproduces the error
(https://github.com/StephanEwen/incubator-flink/blob/FLINK1235/flink-compiler/src/test/java/org/apache/flink/compiler/NestedIterationsTest.java)
The optimizer correctly rejects nested iterations and accepts iterations in
constant paths. The JobGraphGenerator, which takes the optimized program and
creates the data flow schedule does not properly handle those cases, yet.
> Compiler rejectes non-nested iterations in constant path of an Iteration.
> -------------------------------------------------------------------------
>
> Key: FLINK-1235
> URL: https://issues.apache.org/jira/browse/FLINK-1235
> Project: Flink
> Issue Type: Bug
> Components: Optimizer
> Affects Versions: 0.8-incubating
> Reporter: Stephan Ewen
> Assignee: Stephan Ewen
> Fix For: 0.8-incubating
>
>
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