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Posted to issues@kylin.apache.org by "Guangxu Cheng (Jira)" <ji...@apache.org> on 2020/10/01 08:20:00 UTC

[jira] [Commented] (KYLIN-4666) Improve TopNCounter's merge performance

    [ https://issues.apache.org/jira/browse/KYLIN-4666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17205366#comment-17205366 ] 

Guangxu Cheng commented on KYLIN-4666:
--------------------------------------

duplicate of [KYLIN-4567|https://github.com/apache/kylin/pull/1259]  ?

> Improve TopNCounter's merge performance
> ---------------------------------------
>
>                 Key: KYLIN-4666
>                 URL: https://issues.apache.org/jira/browse/KYLIN-4666
>             Project: Kylin
>          Issue Type: Improvement
>            Reporter: Zhong Yanghong
>            Assignee: Zhong Yanghong
>            Priority: Major
>
> Currently, we need to do sort for very merge operation, which will cost much time for thousands of merges. It's better to leverage a bit more buffer to reduce the chance of sort



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