steveloughran commented on PR #8811:
URL: https://github.com/apache/hadoop/pull/8811#issuecomment-6132271442

   copilot says
   
   >  CI exposed an interaction with the  maven-install-plugin  3.1.4 upgrade.  
hadoop-project-dist  is a  pom  parent that inherits JAR/test-JAR executions 
for its distribution children. As the parent has no sources, those executions 
created empty artifacts; Install 3.1.4 then used the assigned empty JAR as the 
primary artifact and wrote it to the  .pom  path.
   
   > The result was a non-XML  hadoop-project-dist  POM in Yetus’s local 
repository, breaking inherited dependency management in later module builds. 
The fix adds  skipIfEmpty  to both inherited executions: the parent installs 
its actual POM, while children with classes continue to produce their normal 
JARs and test JARs.


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