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From "Fabian Hueske (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-3586) Risk of data overflow while use sum/count to calculate AVG value
Date Fri, 11 Mar 2016 08:32:29 GMT

    [ https://issues.apache.org/jira/browse/FLINK-3586?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15190652#comment-15190652
] 

Fabian Hueske commented on FLINK-3586:
--------------------------------------

FLINK-3596 has been resolved. So intermediate types are no longer exposed to Calcite and this
issue can now be addressed.

> 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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