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https://issues.apache.org/jira/browse/ASTERIXDB-997?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmitry Lychagin resolved ASTERIXDB-997.
---------------------------------------
    Resolution: Fixed

There does not seem to be a immediate need for this rewriting. 
Distinct issues were addressed by 
https://issues.apache.org/jira/browse/ASTERIXDB-2078 

Currently there're logical/physical operators for distinct. Distinct physical 
operators use runtime of the groupby operators ( both regular / micro )

> use (sort-based) group-by for distinct
> --------------------------------------
>
>                 Key: ASTERIXDB-997
>                 URL: https://issues.apache.org/jira/browse/ASTERIXDB-997
>             Project: Apache AsterixDB
>          Issue Type: Improvement
>          Components: *DB - AsterixDB, COMP - Compiler
>            Reporter: asterixdb-importer
>            Assignee: Dmitry Lychagin
>            Priority: Minor
>
> use (sort-based) group-by for distinct



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