Gábor Hermann created FLINK-2303:
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Summary: Add count method to GroupedDataStream
Key: FLINK-2303
URL: https://issues.apache.org/jira/browse/FLINK-2303
Project: Flink
Issue Type: Improvement
Components: Streaming
Reporter: Gábor Hermann
Priority: Minor
As aggregations from DataStream was removed, the {{count}} method was also
removed. A count method should be introduced to the {{GroupedDataStream<T>}}
that returns a {{Tuple2<T, Long>}} of the latest element and number of the
elements in the stream with the same key.
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