Vineet Garg created HIVE-22074:
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Summary: Slow compilation due to IN to OR transformation
Key: HIVE-22074
URL: https://issues.apache.org/jira/browse/HIVE-22074
Project: Hive
Issue Type: Improvement
Components: Logical Optimizer
Reporter: Vineet Garg
Assignee: Vineet Garg
Currently Hive transform IN expressions to OR to apply various CBO rules. This
incur significant performance hit if IN consist of large number of expressions.
It is better to not transform IN expressions to OR in such cases because
overall benefit of various optimizations/transformations is unrealized due to
the compilation overhead
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