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Posted to dev@kylin.apache.org by "Zhong Yanghong (Jira)" <ji...@apache.org> on 2020/08/19 02:44:00 UTC

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

Zhong Yanghong created KYLIN-4707:
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             Summary: Add one config to disable mapper side combiner especially 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


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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