[HADOOP-18047] hostnmae is shown in LowerCase in SecurityUtil#replacePattern

• Type: Wish
• Status: Resolved
• Priority: Trivial
• Resolution: Invalid
• Affects Version/s: 3.3.1
• Component/s: common
• Target Version/s: 3.3.1
• Assignee: Unassigned
• Reporter: Vitalii Diravka
• Created: 14/Dec/21 22:19
• Updated: 16/Jan/24 09:12
• Resolved: 15/Dec/21 07:18

Description

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?

Issue Links

• relates to: HADOOP-11699 _HOST not consistently resolving to lowercase fully qualified hostname on Windows
• relates to: HADOOP-8917 add LOCALE.US to toLowerCase in SecurityUtil.replacePattern