Gopal V created HIVE-11406:
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Summary: Vectorization: StringExpr::compare() == 0 is bad for
performance
Key: HIVE-11406
URL: https://issues.apache.org/jira/browse/HIVE-11406
Project: Hive
Issue Type: Bug
Components: Vectorization
Affects Versions: 1.3.0, 2.0.0
Reporter: Gopal V
Assignee: Gopal V
{{StringExpr::compare() == 0}} is forced to evaluate the whole memory
comparison loop for differing lengths of strings, though there is no
possibility they will ever be equal.
Add a {{StringExpr::equals}} which can be a smaller and tighter loop.
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