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From "Chengxiang Li (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-3473) Add partial aggregate support in Flink
Date Tue, 23 Feb 2016 07:39:18 GMT
Chengxiang Li created FLINK-3473:
------------------------------------

             Summary: Add partial aggregate support in Flink
                 Key: FLINK-3473
                 URL: https://issues.apache.org/jira/browse/FLINK-3473
             Project: Flink
          Issue Type: Improvement
          Components: Table API
            Reporter: Chengxiang Li
            Assignee: Chengxiang Li


For decomposable aggregate function, partial aggregate is more efficient as it significantly
reduce the network traffic during shuffle and parallelize part of the aggregate calculation.
This is an umbrella task for partial aggregate.



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