| Package | Description |
|---|---|
| org.apache.flink.streaming.api.datastream |
| Modifier and Type | Method and Description |
|---|---|
GroupedDataStream<OUT> |
GroupedDataStream.copy() |
GroupedDataStream<OUT> |
DataStream.groupBy(int... fields)
Groups the elements of a
DataStream by the given key positions to
be used with grouped operators like
reduce(ReduceFunction) |
GroupedDataStream<OUT> |
DataStream.groupBy(org.apache.flink.api.java.functions.KeySelector<OUT,?> keySelector)
Groups the elements of a
DataStream by the key extracted by the
KeySelector to be used with grouped operators like
reduce(ReduceFunction). |
GroupedDataStream<OUT> |
DataStream.groupBy(String... fields)
Groups a
DataStream using field expressions. |
| Constructor and Description |
|---|
GroupedDataStream(GroupedDataStream<OUT> dataStream) |
Copyright © 2014–2015 The Apache Software Foundation. All rights reserved.