abstractdog commented on PR #6642:
URL: https://github.com/apache/hive/pull/6642#issuecomment-5094275831

   > @abstractdog recent fix in this area: 
[5ae5a70](https://github.com/apache/hive/commit/5ae5a709996c6950f2103dd4e252f224ac20e1a9)
   > 
   > cc @difin
   
   yeah, I confirmed that it didn't solve the problem I was investigating 
completely
   [HIVE-29744](https://issues.apache.org/jira/browse/HIVE-29744) was about to 
decide whether to fall into the `replaceFiles` or the `copyFiles` codepaths as 
far as I can recall, and this patch solves the remaining problems after we're 
still in the `copyFiles` path: without this patch, `mvFile` simply cannot cope 
with highly concurrent inserts with the old 'suffix++' workaround


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