[jira] [Created] (KYLIN-1851) Imrpove build dictionary, consider that input is already sorted

[liyang (JIRA)]

liyang created KYLIN-1851:
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             Summary: Imrpove build dictionary, consider that input is already 
sorted
                 Key: KYLIN-1851
                 URL: https://issues.apache.org/jira/browse/KYLIN-1851
             Project: Kylin
          Issue Type: Bug
            Reporter: liyang


Currently dictionary build may encounter OOM when cardinality is huge. This can 
benefit from that the input (which is the output of FactDistinctColumn reducer) 
is already sorted.



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