Fanoid commented on code in PR #191:
URL: https://github.com/apache/flink-ml/pull/191#discussion_r1050566402
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flink-ml-core/src/main/java/org/apache/flink/ml/common/datastream/DataStreamUtils.java:
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@@ -133,6 +135,15 @@ public static <T> DataStream<T> reduce(DataStream<T>
input, ReduceFunction<T> fu
}
}
+ public static <T, K> DataStream<T> reduce(KeyedStream<T, K> input,
ReduceFunction<T> func) {
Review Comment:
I've confirmed `BatchGroupedReduceOperator` works well in streaming mode.
However, in case of unexpected changes of its implementation, I made a copy of
this class in `DataStreamUtils`, named `KeyedReduceOperator`.
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