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https://issues.apache.org/jira/browse/KYLIN-2797?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16239590#comment-16239590
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Billy Liu commented on KYLIN-2797:
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+1

> Remove MR engine V1
> -------------------
>
>                 Key: KYLIN-2797
>                 URL: https://issues.apache.org/jira/browse/KYLIN-2797
>             Project: Kylin
>          Issue Type: Improvement
>          Components: Job Engine
>            Reporter: Shaofeng SHI
>            Assignee: Shaofeng SHI
>            Priority: Minor
>              Labels: scope
>             Fix For: v2.3.0
>
>
> MR Engine V1 was the MR Cubing algorith in Kylin 1.3 and before. Kylin 1.5 
> introduced the V2 engine together with sharded HBase storage, which has 
> proven having better performance than V1. Now I didn't see a reason to keep 
> the V1 engine in Kylin code base. Suggest to remove them. 



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