steveloughran commented on issue #1924: HADOOP-16877. S3A FS deleteOnExit to 
skip the exists check.
URL: https://github.com/apache/hadoop/pull/1924#issuecomment-606109821
 
 
   Note: I tried to allow FS instances to support parallel deletes for extra 
performance, but it all gets too complex, especially as the delete process is 
synchronized on the list of paths to delete; easy to cause problems on 
something which shouldn't be a critical path (unless something uses it in 
production a lot). What is key: no 404 creation in any registration of paths to 
delete
   

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