[GitHub] spark issue #19073: [SPARK-21855][YARN] Should print error when upload same ...

[caneGuy]

Github user caneGuy commented on the issue:

    https://github.com/apache/spark/pull/19073
  
    @jerryshao 
    reproduce step is below:
    1、add `--files` when submit jobs
    2、add file with same name in `--files` then exception will throw
    After looking into your pr,that fix this issue.
    I will backport 14423 to our inner branch,and can you backport your fix to 
master。


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