[ 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)