Fabian Hueske created FLINK-1780:
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Summary: Rename FlatCombineFunction to GroupCombineFunction
Key: FLINK-1780
URL: https://issues.apache.org/jira/browse/FLINK-1780
Project: Flink
Issue Type: Improvement
Components: Java API, Scala API
Affects Versions: 0.9
Reporter: Fabian Hueske
Priority: Minor
Fix For: 0.9
The recently added {{GroupCombineOperator}} requires a {{FlatCombineFunction}},
however a {{GroupReduceOperator}} requires a {{GroupReduceFunction}}.
{{FlatCombineFunction}} and {{GroupReduceFunction}} work on the same types of
parameters (Iterable and Collector).
Therefore, I propose to change the name {{FlatCombineFunction}} to
{{GroupCombineFunction}}. Since the function could not be independently used
until recently, this API breaking change should be OK.
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