[JENKINS-43473] Add support for hostname attribute in Junit XML

JUnit XML has a hostname attribute as part of testsuite element. At least in a number of schemas I found.

Adding support for this attribute would allow us:

1. Possibly displaying it along with the testcase or testsuite results.


2. Would make deduplication easier for parallel jobs or same tests running on diff machines/architectures/operating systems.


3. Since a different slave could be used for a different test run would make it easier to see how results vary if we can tell which slave was used to run the tests.

---
Originally reported by gena01, imported from: Add support for hostname attribute in Junit XML

• status: Open
  
• priority: Minor
  
• component(s): junit-plugin
  
• resolution: Unresolved
  
• votes: 1
  
• watchers: 2
  
• imported: 2025-11-26
  

JUnit XML has a hostname attribute as part of testsuite element. At least in a number of schemas I found.


Adding support for this attribute would allow us:



	
Possibly displaying it along with the testcase or testsuite results.

	
Would make deduplication easier for parallel jobs or same tests running on diff machines/architectures/operating systems.

	
Since a different slave could be used for a different test run would make it easier to see how results vary if we can tell which slave was used to run the tests.

The issue names the junit-plugin component and the JUnit XML testsuite hostname attribute, but no files, tests, or entry points. Start by locating where JUnit XML is parsed and results are represented; done requires an agreed way to retain and expose hostname, including its role in deduplication.

Written by the indexing model from the issue text.