Kazuaki Ishizaki created SPARK-22130:
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             Summary: UTF8String.trim() inefficiently scans all white-space 
string twice.
                 Key: SPARK-22130
                 URL: https://issues.apache.org/jira/browse/SPARK-22130
             Project: Spark
          Issue Type: Bug
          Components: Spark Core
    Affects Versions: 2.2.0
            Reporter: Kazuaki Ishizaki
            Priority: Minor


{{UTF8String.trim()}} scans a string including only white space (e.g. {{"    
"}}) twice inefficiently. 




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