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From "Aljoscha Krettek (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (FLINK-3474) Partial aggregate interface design and sort-based implementation
Date Fri, 22 Mar 2019 09:57:00 GMT

     [ https://issues.apache.org/jira/browse/FLINK-3474?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aljoscha Krettek updated FLINK-3474:
------------------------------------
    Component/s:     (was: Table SQL / API)
                 Table SQL / Legacy Planner

> 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 SQL / Legacy Planner
>            Reporter: Chengxiang Li
>            Assignee: Chengxiang Li
>            Priority: Major
>
> 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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