Github user mjsax commented on the pull request:
https://github.com/apache/flink/pull/750#issuecomment-179126064
Build failed due to compilation error. Seems to be a caching problem.
Builds without problems locally and on personal Travis:
https://travis-ci.org/apache/flink/builds/106583181
(test errors on personal Travis is know issue:
https://issues.apache.org/jira/browse/FLINK-3313)
@tillrohrmann Please review.
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