Github user StephanEwen commented on the pull request:
https://github.com/apache/flink/pull/1052#issuecomment-137757977
I just saw that the OuterJoin runtime classes/tests cause a lot of warnings
when compiling. Manyly raw types, unchecked casts.
Would be good to fix those. In general, we strive for as little warnings as
possible. Generic warnings should be fixed or suppressed (if impossible to
fix). Otherwise they crowd the warnigns output so that the actual critical
warnings get lost.
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