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Posted to dev@kylin.apache.org by "Shaofeng SHI (JIRA)" <ji...@apache.org> on 2016/07/22 10:50:20 UTC

[jira] [Created] (KYLIN-1917) TopN counter merge performance improvement

Shaofeng SHI created KYLIN-1917:
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             Summary: TopN counter merge performance improvement
                 Key: KYLIN-1917
                 URL: https://issues.apache.org/jira/browse/KYLIN-1917
             Project: Kylin
          Issue Type: Improvement
          Components: Job Engine
    Affects Versions: v1.5.2, v1.5.3
            Reporter: Shaofeng SHI
             Fix For: Backlog


Observed the reduce phase of cube build is slow when there is TopN counter. There should be room for performance improvement.



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