Github user fhueske commented on the issue: https://github.com/apache/flink/pull/2088 Won't merge this PR at this point. A few Travis builds timed out and I found that the added expression tests increase build time by about one minute due to the code-gen compilation overhead. @twalthr, do you think we can adapt the tests to batch several expressions into a single class with multiple methods to invoke the compiler less frequently?
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