[jira] [Created] (FLINK-3586) Risk of data overflow while use sum/count to calculate AVG value

[Shang Yuanchun (Jira)]

Chengxiang Li created FLINK-3586:
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             Summary: Risk of data overflow while use sum/count to calculate AVG value
                 Key: FLINK-3586
                 URL: https://issues.apache.org/jira/browse/FLINK-3586
             Project: Flink
          Issue Type: Sub-task
          Components: Table API
            Reporter: Chengxiang Li
            Priority: Minor


Now, we use {{(sum: Long, count: Long}} to store AVG partial aggregate data, which may have data overflow risk, we should use unbounded data type(such as BigInteger) to store them for necessary data types.



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