steveloughran commented on PR #4284:
URL: https://github.com/apache/hadoop/pull/4284#issuecomment-1120938219

   -1. wontfix. 
   
   if this were to go in
   
   * every pending PR would no longer apply without rebasing/reworking
   * every subsequent pr would be impossible to backport without reversing the 
work
   
   we have a fraction of this problem even with the movement of unshaded guava 
to shaded guava to hadoop's own Precondition classes; moving things from trunk 
to 3.3. to internal PRs always fail to merge at those two or three imports. 
   
   we couldn't cope with this at scale. 
   
   this is also why we don't go overboard in reordering imports in the files 
touched within a normal PR: IDEs may think they are being helpful by cleaning 
up imports, but aren't. Removing unused imports is fine, but big cleanups, tht 
causes too many problems.
   
   Sorry. if you had to deal with backporting you'd understand why.


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