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Ted Xu commented on CALCITE-2619: --------------------------------- Thanks [~lemire] for the test and blog post. We should move forward by adopting Guava. Daniel, are you going to give a patch in Calcite? Or else I'd like to contribute. > 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 > Priority: Major > > 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. > -- This message was sent by Atlassian JIRA (v7.6.3#76005)