[jira] [Created] (KYLIN-2852) Step "Build Dimension Dictionary" is very slow for Step "Extract Fact Table Distinct Columns" only build dict from fact table

[Yang Hao (JIRA)]

Yang Hao created KYLIN-2852:
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             Summary: Step "Build Dimension Dictionary" is very slow for Step 
"Extract Fact Table Distinct Columns" only build dict from fact table
                 Key: KYLIN-2852
                 URL: https://issues.apache.org/jira/browse/KYLIN-2852
             Project: Kylin
          Issue Type: Improvement
            Reporter: Yang Hao
         Attachments: getAllDictColumnsOnFact.png

If a dict column is from lookup table, then "Build Dimension Dictionary" would 
be very slow, because  Step "Extract Fact Table Distinct Columns" only build 
dict from fact table.



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