yaooqinn opened a new pull request #26622: [WIP][SPARK-28023][Test] Cheap UTF8String Trim URL: https://github.com/apache/spark/pull/26622 This PR is under test currently, aiming to see if "cheap" trim can help improve performance https://github.com/apache/spark/pull/24872#issuecomment-556917834 benchmark is based on https://github.com/apache/spark/pull/24872#issuecomment-503827016
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