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Posted to issues@kylin.apache.org by "kangkaisen (JIRA)" <ji...@apache.org> on 2017/07/07 08:55:00 UTC

[jira] [Commented] (KYLIN-2606) Only return counter for precise count_distinct if query is exactAggregate

    [ https://issues.apache.org/jira/browse/KYLIN-2606?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16077829#comment-16077829 ] 

kangkaisen commented on KYLIN-2606:
-----------------------------------

This commit has run for a long time in our prod env.  [~mahongbin], please you review this commit when you have time. Thanks you very much.

> Only return counter for precise count_distinct if query is exactAggregate
> -------------------------------------------------------------------------
>
>                 Key: KYLIN-2606
>                 URL: https://issues.apache.org/jira/browse/KYLIN-2606
>             Project: Kylin
>          Issue Type: Improvement
>          Components: Query Engine
>    Affects Versions: v2.0.0
>            Reporter: kangkaisen
>            Assignee: kangkaisen
>
> If the query is exactAggregation and has some memory hungry measures, we could directly return final result to speed up the query , reduce the RPC data size and memory usage in queryServer.



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