[jira] [Created] (KYLIN-3161) Enforce global dictionary for bitmap count distinct column

[Shaofeng SHI (JIRA)]

Shaofeng SHI created KYLIN-3161:
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             Summary: Enforce global dictionary for bitmap count distinct column
                 Key: KYLIN-3161
                 URL: https://issues.apache.org/jira/browse/KYLIN-3161
             Project: Kylin
          Issue Type: Improvement
          Components: Metadata, Web 
            Reporter: Shaofeng SHI
            Assignee: Shaofeng SHI


For bitmap based count distinct column (as the data type is not int), a Global 
dictionary is required. But now user can use normal dictionary, which may cause 
incorrect result.



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