[jira] [Created] (HADOOP-9507) LocalFileSystem rename() is broken in some cases when destination exists

["Mostafa Elhemali (JIRA)" <ji...@apache.org>]

Mostafa Elhemali created HADOOP-9507:
----------------------------------------

             Summary: LocalFileSystem rename() is broken in some cases when destination exists
                 Key: HADOOP-9507
                 URL: https://issues.apache.org/jira/browse/HADOOP-9507
             Project: Hadoop Common
          Issue Type: Bug
          Components: fs
    Affects Versions: 1-win
            Reporter: Mostafa Elhemali
            Assignee: Mostafa Elhemali
            Priority: Minor


In branch-1-win, the rename() method in RawLocalFileSystem uses FileUtil.copy() without realizing that FileUtil.copy() has a special behavior that if you're copying /foo to /bar and /bar exists and is a directory, it'll copy /foo inside /bar instead of overwriting it, which is not what rename() wants. So you end up with weird behaviors like in this repro:

{code}
c:
cd \
md Foo
md Bar
md Foo\X
md Bar\X
hadoop fs -mv file:///c:/Foo file:///c:/Bar
{code}

At the end of this, you would expect to find only Bar\X, but you instead find Bar\X\X.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira