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Posted to issues@flink.apache.org by NicoK <gi...@git.apache.org> on 2017/08/03 13:31:54 UTC

[GitHub] flink issue #3816: [FLINK-5720] Deprecate DataStream#fold()

Github user NicoK commented on the issue:

    https://github.com/apache/flink/pull/3816
  
    Actually, `KeyedStream.aggregate` is protected and thus not accessible.
    
    You may, however, access `WindowedStream#aggregate(AggregateFunction<T,ACC,R>) ` and `AllWindowedStream#aggregate(AggregateFunction<T,ACC,R>) ` for windowed streams and use a stateful map or flatmap for the rest.


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