[jira] [Created] (FLINK-3219) Implement DataSet.count using a single operator

[Shang Yuanchun (Jira)]

Greg Hogan created FLINK-3219:
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             Summary: Implement DataSet.count using a single operator
                 Key: FLINK-3219
                 URL: https://issues.apache.org/jira/browse/FLINK-3219
             Project: Flink
          Issue Type: Improvement
            Reporter: Greg Hogan
            Assignee: Greg Hogan
            Priority: Minor


{{DataSet.count}} is currently implemented using a {{FlatMapFunction}} followed by a {{DiscardingOutputFormat}}. As noted by [~StephanEwen] in [FLINK-2716] this can be done with only a {{RichOutputFormat}}.



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