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From rmetzger <...@git.apache.org>
Subject [GitHub] incubator-flink pull request: Streaming Scala API
Date Mon, 22 Dec 2014 15:03:37 GMT
Github user rmetzger commented on the pull request:

    https://github.com/apache/incubator-flink/pull/275#issuecomment-67846346
  
    I would suggest to use the Keys class also for Tuples.
    If you have a Tuple3<Tuple2<String, Int>, Int, Int> and you select key 0 (which
is a Tuple2), we internally handle this as keys[] = {0,1}.
    If you really want to select only the String field of the Tuple2, you have to use string
-field section "f0.f0" and you'll get 0.
    
    If you just use the "trivial" extraction (= directly using the user input), you might
cause unexpected behavior.


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