Ruben Q L created HIVE-29833:
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Summary: Override isSafeOperator method on Hive operators that are
safe
Key: HIVE-29833
URL: https://issues.apache.org/jira/browse/HIVE-29833
Project: Hive
Issue Type: Improvement
Reporter: Ruben Q L
Some Calcite simplifications on RexSimplify's SafeRexVisitor that are currently
"blocked" could be enabled by overriding isSafeOperator method to return true
(instead of the default false) on those Hive operators that we can consider
"safe" (i.e. that shall not throw at runtime, unlike e.g. DIVISION which can
throw in case of. division by zero).
Potential candidates (currently not covered by standard Calcite RexSimplify
SafeRexVisitor code):
- HiveExtractDate
- others?
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