[HADOOP-9651] Filesystems to throw FileAlreadyExistsException in createFile(path, overwrite=false) when the file exists

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 2.1.0-beta
• Component/s: fs
• Assignee: Unassigned
• Reporter: Steve Loughran
• Created: 18/Jun/13 14:17
• Updated: 03/Jul/14 13:13

Description

While HDFS and other filesystems throw a FileAlreadyExistsException if you try to create a file that exists and you have set overwrite=false, RawLocalFileSystem throws a plain IOException. This makes it impossible to distinguish a create operation failing from a fixable problem (the file is there) and something more fundamental.