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Posted to dev@kylin.apache.org by "Shaofeng SHI (JIRA)" <ji...@apache.org> on 2016/03/09 09:25:40 UTC

[jira] [Created] (KYLIN-1478) TopN measure should support non-dictionary encoding for ultra high cardinality

Shaofeng SHI created KYLIN-1478:
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             Summary: TopN measure should support non-dictionary encoding for ultra high cardinality
                 Key: KYLIN-1478
                 URL: https://issues.apache.org/jira/browse/KYLIN-1478
             Project: Kylin
          Issue Type: Wish
    Affects Versions: v2.0
            Reporter: Shaofeng SHI
             Fix For: Future


TopN measure uses dictionary to encode the literal column, that may not work when the cardinality is ultra high. Need support other encoding like fixedLength.



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