Shaofeng SHI updated KYLIN-2657:
    Fix Version/s: v2.1.0
      Component/s: Job Engine

> 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
>          Components: Job Engine
>            Reporter: Roger Shi
>            Assignee: Roger Shi
>             Fix For: v2.1.0
> 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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