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From fhueske <...@git.apache.org>
Subject [GitHub] incubator-flink pull request: Add Pi approximation Java example
Date Thu, 24 Jul 2014 20:29:03 GMT
Github user fhueske commented on the pull request:

    https://github.com/apache/incubator-flink/pull/78#issuecomment-50073451
  
    Nice one!
    I'd prefer to use a ReduceFunction instead of a GroupReduceFunction because it is automatically
combinable (which is usually important if you do a Reduce without groupBy) and shorter.
    However, you would need to add another MapFunction for the final division.
    
    You could also replace the first MapFunction by a FilterFunction and emit only a record
if the test is passed. This would mean that no records with 0-valued ints are emitted and
therefore the summing becomes cheaper.
    



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