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Posted to issues@kylin.apache.org by "hongbin ma (JIRA)" <ji...@apache.org> on 2017/08/30 08:06:01 UTC

[jira] [Created] (KYLIN-2823) Trim TupleFilter after dictionary-based filter optimization

hongbin ma created KYLIN-2823:
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             Summary: Trim TupleFilter after dictionary-based filter optimization
                 Key: KYLIN-2823
                 URL: https://issues.apache.org/jira/browse/KYLIN-2823
             Project: Kylin
          Issue Type: Improvement
            Reporter: hongbin ma


with cube's dictionary, kylin will optimize filters like:

( a = 'value_in_dict' OR a = 'value_not_in_dict')   =>      (a = 'value_in_dict' OR ConstantTupleFilter.FALSE)

we need to further trim the filter to (a = 'value_in_dict') to avoid too many children after flatten filter step




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