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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2019/02/21 13:08:16 UTC

[GitHub] dawidwys commented on issue #7786: [FLINK-11706] Add the SumFunction to support KeyedStream.sum

dawidwys commented on issue #7786: [FLINK-11706] Add the SumFunction to support KeyedStream.sum
URL: https://github.com/apache/flink/pull/7786#issuecomment-465993329
 
 
   Personally I don't like that semantic. Sum operation on array is not well defined. Some users could expect that result of plus on arrays should be concatenation of those. Therefore I am personally against introducing this feature.

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