You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@kylin.apache.org by "Zhong Yanghong (Jira)" <ji...@apache.org> on 2020/08/19 03:08:00 UTC

[jira] [Updated] (KYLIN-4707) Add one config to disable mapper side combiner especially when there's topn measure

     [ https://issues.apache.org/jira/browse/KYLIN-4707?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zhong Yanghong updated KYLIN-4707:
----------------------------------
    Summary: Add one config to disable mapper side combiner especially when there's topn measure  (was: Add one config to disable mapper side combiner especially there's topn measure)

> Add one config to disable mapper side combiner especially when there's topn measure
> -----------------------------------------------------------------------------------
>
>                 Key: KYLIN-4707
>                 URL: https://issues.apache.org/jira/browse/KYLIN-4707
>             Project: Kylin
>          Issue Type: Improvement
>            Reporter: Zhong Yanghong
>            Assignee: Zhong Yanghong
>            Priority: Major
>
> Since mapper side combiner is only using one single thread to do measure merge. If there's some topn measure defined in cube, it will become very slow to finish a mapper task. It's better to provide an option to disable it.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)