[jira] [Created] (MAPREDUCE-7287) Distcp will delete exists file , If we use "--delete and --update" options and distcp file.

["zhengchenyu (Jira)" <ji...@apache.org>]

zhengchenyu created MAPREDUCE-7287:
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             Summary: Distcp will delete exists file ,  If we use "--delete and --update" options and distcp file.
                 Key: MAPREDUCE-7287
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7287
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: distcp
    Affects Versions: 3.2.1
            Reporter: zhengchenyu
             Fix For: 3.3.1


hdfs://ns1/tmp/a is an existing file, hdfs://ns2/tmp/a is also an existing file.

When I run this command, 

{code}

hadoop distcp -delete -update hdfs://ns1/tmp/a hdfs://ns2/tmp/a

{code}

I Found hdfs://ns2/tmp/a is deleted unpectectedly.

 

Then problem is DeletedDirTracker. Because here we only distcp a file (not a directory), the varialbe `directories` in DeletedDirTracker is not set.

Maybe I think DeletedDirTracker only consider directory in design stage. But we distcp only a file, they are deleted unpectectedly.



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