Ted Xu created CALCITE-2619:
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Summary: Reduce string literal creation cost by removing charset
check
Key: CALCITE-2619
URL: https://issues.apache.org/jira/browse/CALCITE-2619
Project: Calcite
Issue Type: Improvement
Components: core
Reporter: Ted Xu
Assignee: Julian Hyde
The cost of creating NlsString is very high, due to its charset check. In some
cases, e.g., expression evaluate because of Partition Prune, the NlsString
creation costs 40%+ of total executor's overhead.
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