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https://issues.apache.org/jira/browse/KYLIN-2657?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Roger Shi resolved KYLIN-2657.
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Resolution: Fixed
fixed in commit 9ad0ba3ddb391695eddaadca438dc4dfdda60d5f
> Cube merge TopN dictionary not found, cause NPE
> -----------------------------------------------
>
> Key: KYLIN-2657
> URL: https://issues.apache.org/jira/browse/KYLIN-2657
> Project: Kylin
> Issue Type: Bug
> Reporter: Roger Shi
> Assignee: Roger Shi
>
> One TopN measure with two group-by columns, and both of them are in fact
> table. If one cardinality is high and the other is low, merging Cube may fail
> for NPE (dict not found).
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