Github user aljoscha commented on the issue:

    https://github.com/apache/flink/pull/3110
  
    Thanks for notifying @fhueske! And sorry for not noticing this earlier and 
jumping on so late.
    
    I think this part of the API is already to bloated and (at the same time) 
not powerful enough. These functions don't allow having multiple "aggregations" 
in one operation, i.e. you cannot do 
`inputStream.keyBy(...).min(1).andMax(2).andSum(3)` (not actual API). I think 
in the long run we should remove this part of the API because the Table API is 
a nicer way of expressing simple aggregations. What do you think?


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