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From "godfrey he (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (FLINK-5514) Implement an efficient physical execution for CUBE/ROLLUP/GROUPING SETS
Date Thu, 04 May 2017 01:56:04 GMT

     [ https://issues.apache.org/jira/browse/FLINK-5514?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

godfrey he reassigned FLINK-5514:
---------------------------------

    Assignee: godfrey he

> Implement an efficient physical execution for CUBE/ROLLUP/GROUPING SETS
> -----------------------------------------------------------------------
>
>                 Key: FLINK-5514
>                 URL: https://issues.apache.org/jira/browse/FLINK-5514
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table API & SQL
>            Reporter: Timo Walther
>            Assignee: godfrey he
>
> A first support for GROUPING SETS has been added in FLINK-5303. However, the current
runtime implementation is not very efficient as it basically only translates logical operators
to physical operators i.e. grouping sets are currently only translated into multiple groupings
that are unioned together. A rough design document for this has been created in FLINK-2980.



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