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From "Timo Walther (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-5514) Implement an efficient physical execution for CUBE/ROLLUP/GROUPING SETS
Date Mon, 16 Jan 2017 15:49:26 GMT
Timo Walther created FLINK-5514:
-----------------------------------

             Summary: 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


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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