wangpeibin713 commented on issue #7786: [FLINK-11706] Add the SumFunction to support KeyedStream.sum URL: https://github.com/apache/flink/pull/7786#issuecomment-465985556 After this transform function done， some function（maybe flatmap + keyBy + reduce ） should be called to combine the result value into Integer[]. It's not inconvenient for the developer. so I want to introduce this feature. It's transparent to developer. > how about some code like below > > ``` > int index = 0 > for (Integer v : value.f1) { > out.collect(new Tuple2<>(String.format("%d_%d", value.f0, index++), v)); > } > ```
---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
