Vitalii Diravka created HADOOP-18047:
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             Summary: hostnmae is shown in LowerCase in 
SecurityUtil#replacePattern 
                 Key: HADOOP-18047
                 URL: https://issues.apache.org/jira/browse/HADOOP-18047
             Project: Hadoop Common
          Issue Type: Wish
          Components: common
    Affects Versions: 3.3.1
            Reporter: Vitalii Diravka
             Fix For: 3.4.0


Leading hostname to lower case causes test failures, when original hostname in 
uppercase. 

[https://github.com/apache/hadoop/blob/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/SecurityUtil.java#L230]

What is the intention of using lowercase there?



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