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https://issues.apache.org/jira/browse/KYLIN-1790?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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qianqiaoneng updated KYLIN-1790:
--------------------------------
Assignee: Vic Wang
> Metadata Migration Tool didn't handle aggregation group joint rule
> successfully
> -------------------------------------------------------------------------------
>
> Key: KYLIN-1790
> URL: https://issues.apache.org/jira/browse/KYLIN-1790
> Project: Kylin
> Issue Type: Bug
> Reporter: qianqiaoneng
> Assignee: Vic Wang
>
> If the total dimension is 10, and aggregation group number is 9. after the
> metadata upgrade, there would be a joint rule with 10-9=1 dimension. But this
> definition will cause
> java.lang.IllegalStateException: Aggregation group 0 require at least 2 dims
> in a joint
> Should change the upgrade logic not to add joint rule if dimension number is
> 1.
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