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https://issues.apache.org/jira/browse/FLINK-1290?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14227863#comment-14227863
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Stephan Ewen commented on FLINK-1290:
-------------------------------------
Turns out, the bug was actually more complicated, and required custom
partitioners and binary operations to reproduce.
I implemented a fix already...
> Optimizer prunes all candidates when unable to reuse sort properties
> --------------------------------------------------------------------
>
> Key: FLINK-1290
> URL: https://issues.apache.org/jira/browse/FLINK-1290
> Project: Flink
> Issue Type: Bug
> Components: Optimizer
> Affects Versions: 0.8-incubating
> Reporter: Stephan Ewen
> Assignee: Stephan Ewen
> Fix For: 0.8-incubating
>
>
> Programs fail with an exception that no plan could be created.
> The bug can be reproduced by the following code:
> {code}
> val data : DataSet[(Long, Long)] = ...
> data.distinct(0, 1).groupBy(0).reduceGroup(...)
> {code}
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