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