alamb opened a new pull request, #17119:
URL: https://github.com/apache/datafusion/pull/17119

   ## Which issue does this PR close?
   
   
   - Follow on to https://github.com/apache/datafusion/issues/14319
   - Reverts https://github.com/apache/datafusion/pull/15101
   
   ## Rationale for this change
   
   
   @danila-b made a very cool set of github runner workflows to run the 
extended tests on demand on CI. The idea was that
   it could be used to run the extended tests on each PR that might cause 
breakages before merging to main.
   
   However, in practice it seems it is not used much and hasn't stopped 
regressions
   as we had hoped. For example here are [some recent issues that were closed 
that
   mentioned extended tests] where extended tests broke after merging to main 
even
   after the `run extended tests` command was added (on Mar 27, 2025):
   
   [some recent issues that were closed that mentioned extended tests]: 
https://github.com/apache/datafusion/issues?q=is%3Aissue%20state%3Aclosed%20extended%20test
   
   - https://github.com/apache/datafusion/issues/15641
   - https://github.com/apache/datafusion/issues/16595
   - https://github.com/apache/datafusion/issues/16378
   
   I think the challenge is twofold:
   1. It is not obvious when to run the extended tests
   2. It is not obvious the result of the extended tests (it is reported as a 
Labeler check, which is not very visible -- see 
https://github.com/apache/datafusion/pull/16900#issuecomment-3172505862 for an 
example)
   
   I am sure we could the second point, but the first remains very hard.
   
   Also, the complexity of the extended workflow makes it harder to 
understanding
   and maintain and verify the security of the CI workflows in general.
   
   Thus, I think it is best to remove the extended github comment workflow for 
now.
   
   ## What changes are included in this PR?
   
   1. Remove the github extended workflow
   
   ## Are these changes tested?
   I tested it manually
   
   ## Are there any user-facing changes?
   
   Less PR automation


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