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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, 01 Mar 2016 05:19:18 GMT

    [ https://issues.apache.org/jira/browse/FLINK-3474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15173242#comment-15173242
] 

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

GitHub user ChengXiangLi opened a pull request:

    https://github.com/apache/flink/pull/1746

    [FLINK-3474] support partial aggregate

    This PR includes:
    * New aggregate interface which support partial aggregate.
    * Simple aggregate function implementation, such as SUM/AVG/COUNT/MIN/MAX.
    * DataSetAggregateRule which translate logical calcite aggregate node to Flink operator
functions.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/ChengXiangLi/flink partialAggregate

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/flink/pull/1746.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #1746
    
----
commit a146ff09990ffe612a02c6441a13f1062c6426a9
Author: chengxiang li <chengxiang.li@intel.com>
Date:   2016-03-01T02:47:35Z

    [FLINK-3474] support partial aggregate
    
    d

----


> 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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