hongbin ma created KYLIN-2598:
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             Summary: Should not translate filter to a in-clause filter with 
too many elements
                 Key: KYLIN-2598
                 URL: https://issues.apache.org/jira/browse/KYLIN-2598
             Project: Kylin
          Issue Type: Improvement
            Reporter: hongbin ma
            Assignee: hongbin ma


In 
org.apache.kylin.dict.BuiltInFunctionTransformer#translateFunctionTupleFilter 
we will translate builtin-functions like upper,lower,like to in-clause filters.
 (KYLIN-993)

The approach is In-clause filter will soon become in-efficient when too many 
elements accumulate in the in-clause. Suggest to set a threshold so that when 
there're more elements than this threshold, the translation will abort



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