mustafasrepo opened a new pull request, #10502:
URL: https://github.com/apache/datafusion/pull/10502

   ## Which issue does this PR close?
   
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   Closes #.
   
   ## Rationale for this change
   `PipelineChecker` rule either accepts the physical plan (marking it as safe 
to execute) or rejects it. In this sense, it doesn't change anything in the 
plan. It just checks the validity of the generated plan. Hence, I think with 
this behavior it is more apropriate for this rule to execute after other rules 
(where plans might be modified by rules.)
   
   With this PR, `PipelineChecker` works at the end after other rules.
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   ## What changes are included in this PR?
   
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   ## Are these changes tested?
   
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   ## Are there any user-facing changes?
   
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