Fabian Hueske created FLINK-5963:
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Summary: Remove preparation mapper of DataSetAggregate
Key: FLINK-5963
URL: https://issues.apache.org/jira/browse/FLINK-5963
Project: Flink
Issue Type: Sub-task
Components: Table API & SQL
Affects Versions: 1.3.0
Reporter: Fabian Hueske
Priority: Minor
With the new UDAGG interface we do not need the preparation mapper anymore. It
adds overhead because
- it is another operator
- it prevents to use {{AggregateFunction.accumulate()}} in a combiner or
reducer.
Hence, it should be removed.
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