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Posted to issues@kylin.apache.org by "Yang Hao (JIRA)" <ji...@apache.org> on 2017/09/13 12:24:01 UTC

[jira] [Commented] (KYLIN-2363) Prune cuboids by capping number of dimensions

    [ https://issues.apache.org/jira/browse/KYLIN-2363?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16164566#comment-16164566 ] 

Yang Hao commented on KYLIN-2363:
---------------------------------

[~R0ger] I have met the same problem. Some data are useless, we want another paramter to filter the data that have dimension with null. Can you consider it?

> Prune cuboids by capping number of dimensions
> ---------------------------------------------
>
>                 Key: KYLIN-2363
>                 URL: https://issues.apache.org/jira/browse/KYLIN-2363
>             Project: Kylin
>          Issue Type: Improvement
>            Reporter: fengYu
>            Assignee: Roger Shi
>         Attachments: Dimension Capping.md
>
>
> the scene like this:
> I have 20+ dimensions, However the query will only use at most 5 dimensions in all dimensions, so cuboid that contains 5+ dimensions(except base cuboid) is useless.
> I think we can add a configuration in cube, which limit the max dimensions that cuboid includes.
> What's more, we can config which level(number of dimension) need to calculate. in above scene, we only calculate leve 1,2,3,4,5. and skip level 5+



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