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From "Chen He (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-8673) HDFS reports file already exists if there is a file/dir name end with ._COPYING_
Date Fri, 26 Jun 2015 05:30:05 GMT
Chen He created HDFS-8673:
-----------------------------

             Summary: HDFS reports file already exists if there is a file/dir name end with
._COPYING_
                 Key: HDFS-8673
                 URL: https://issues.apache.org/jira/browse/HDFS-8673
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 2.7.0
            Reporter: Chen He
            Assignee: Chen He


Because CLI is using CommandWithDestination.java which add "._COPYING_" to the tail of file
name when it does the copy. It will cause problem if there is a file/dir already called *._COPYING_
on HDFS.

For file:
-bash-4.1$ hadoop fs -put 5M /user/occ/
-bash-4.1$ hadoop fs -mv /user/occ/5M /user/occ/5M._COPYING_
-bash-4.1$ hadoop fs -ls /user/occ/
Found 1 items
-rw-r--r--   1 occ supergroup    5242880 2015-06-26 05:16 /user/occ/5M._COPYING_
-bash-4.1$ hadoop fs -put 128K /user/occ/5M
-bash-4.1$ hadoop fs -ls /user/occ/
Found 1 items
-rw-r--r--   1 occ supergroup     131072 2015-06-26 05:19 /user/occ/5M

For dir:
-bash-4.1$ hadoop fs -mkdir /user/occ/5M._COPYING_
-bash-4.1$ hadoop fs -ls /user/occ/
Found 1 items
drwxr-xr-x   - occ supergroup          0 2015-06-26 05:24 /user/occ/5M._COPYING_
-bash-4.1$ hadoop fs -put 128K /user/occ/5M
put: /user/occ/5M._COPYING_ already exists as a directory
-bash-4.1$ hadoop fs -ls /user/occ/
(/user/occ/5M._COPYING_ is gone)



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