Greg Hogan created FLINK-3279:
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Summary: Optionally disable DistinctOperator combiner
Key: FLINK-3279
URL: https://issues.apache.org/jira/browse/FLINK-3279
Project: Flink
Issue Type: New Feature
Components: DataSet API
Affects Versions: 1.0.0
Reporter: Greg Hogan
Priority: Minor
Calling {{DataSet.distinct()}} executes {{DistinctOperator.DistinctFunction}}
which is a combinable {{RichGroupReduceFunction}}. Sometimes we know that there
will be few duplicate records and disabling the combine would improve
performance.
I propose adding {{public DistinctOperator<T> setCombinable(boolean
combinable)}} to {{DistinctOperator}}.
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