AngersZhuuuu opened a new pull request #33811:
URL: https://github.com/apache/spark/pull/33811


   ### What changes were proposed in this pull request?
   When target path is empty, we can directly rename stagingDir to targetPath 
avoid to rename path one by one
   
   
   ### Why are the changes needed?
   Optimize file commit logic
   
   
   ### Does this PR introduce _any_ user-facing change?
   User can set `spark.sql.source.stagingDir` to enable  direct rename to 
targetPath instead of partition path one by one when targetPath is empty for 
dynamicPartitionOverWrite
   
   
   ### How was this patch tested?
   Added UT
   


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