Github user arunmahadevan commented on the pull request:
https://github.com/apache/storm/pull/1050#issuecomment-178345578
@ptgoetz Ok I will move peek implementation to a separate PR.
Are you suggesting we overload filter api with fields parameter to keep it
similar to each(inputFields, filter) ? Typically filter method accepts only the
predicate so I did not add that api. E.g. [Java8
filter](https://docs.oracle.com/javase/8/docs/api/java/util/stream/Stream.html#filter-java.util.function.Predicate-).
Let me know if we should add the overload.
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