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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-3474) Partial aggregate interface design and sort-based implementation
Date Tue, 08 Mar 2016 06:51:40 GMT

    [ https://issues.apache.org/jira/browse/FLINK-3474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15184551#comment-15184551
] 

ASF GitHub Bot commented on FLINK-3474:
---------------------------------------

Github user ChengXiangLi commented on the pull request:

    https://github.com/apache/flink/pull/1746#issuecomment-193631851
  
    FLINK-3586 is created to track Long AVG issue.


> Partial aggregate interface design and sort-based implementation
> ----------------------------------------------------------------
>
>                 Key: FLINK-3474
>                 URL: https://issues.apache.org/jira/browse/FLINK-3474
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table API
>            Reporter: Chengxiang Li
>            Assignee: Chengxiang Li
>
> The scope of this sub task includes:
> # Partial aggregate interface.
> # Simple aggregate function implementation, such as SUM/AVG/COUNT/MIN/MAX.
> # DataSetAggregateRule which translate logical calcite aggregate node to Flink user functions.
As hash-based combiner is not available yet(see PR #1517), we would use sort-based combine
as default.



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