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From "Chengxiang Li (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (FLINK-3586) Risk of data overflow while use sum/count to calculate AVG value
Date Thu, 17 Mar 2016 06:06:33 GMT

     [ https://issues.apache.org/jira/browse/FLINK-3586?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chengxiang Li reassigned FLINK-3586:
------------------------------------

    Assignee: Chengxiang Li

> 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
>            Assignee: 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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