Gautham Banasandra created HADOOP-19555:
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Summary: Fix testRenameFileWithFullQualifiedPath on Windows
Key: HADOOP-19555
URL: https://issues.apache.org/jira/browse/HADOOP-19555
Project: Hadoop Common
Issue Type: Bug
Components: hadoop-common
Affects Versions: 3.5.0
Environment: Windows 10
Reporter: Gautham Banasandra
Assignee: Gautham Banasandra
Fix For: 3.5.0
Attachments: image-2025-04-27-23-05-05-212.png
The Apache Commons Net FTP library is used for FTPFileSystem. In
*TestFTPFileSystem#testRenameFileWithFullQualifiedPath()*, the FS operations
(such as touch and rename) are made using absolute paths. However, the library
expects relative paths.
This caused *FTPFileSystem#getFileStatus()* to throw FileNotFoundException
since the library was trying to look for the absolute path under which the
FileSystem was mounted.
This worked fine on Linux as it just appended the absolute path under the
FileSystem's mount path -
!image-2025-04-27-23-05-05-212.png!
However, this fails on Windows since suffixing the absolute path under the
FileSystem's mount path doesn't yield a valid path due to the drive letter in
the absolute path.
Consider the following illustration -
+On Linux+
{text}
path1 => /mnt/d/a/b
path2 => /mnt/d/x/y
path1 + path2 yields a valid path => /mnt/d/a/b/mnt/d/x/y
{text}
+On Windows+
{text}
path1 => C:\a\b
path2 => C:\x\y
path1 + path2 doesn't yield a valid path => C:\a\b\C:\x\y
{text}
So, to fix this, we need to treat the FS operations a purely relative.
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