Gyula Fora created FLINK-1450:
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Summary: Add Fold operator to the Streaming api
Key: FLINK-1450
URL: https://issues.apache.org/jira/browse/FLINK-1450
Project: Flink
Issue Type: New Feature
Components: Streaming
Affects Versions: 0.9
Reporter: Gyula Fora
Priority: Minor
The streaming API currently doesn't support a fold operator.
This operator would work as the foldLeft method in Scala. This would allow
effective implementations in a lot of cases where a the simple reduce is
inappropriate due to different return types.
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