[HADOOP-11196] Implement isFileClosed in WASB to make Flume happy

• Type: Sub-task
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 2.5.1
• Assignee: Unassigned
• Reporter: Mostafa Elhemali
• Created: 13/Oct/14 16:16
• Updated: 19/Dec/17 16:33

Description

Flume uses reflection to call isFileClosed() which is a method implemented by DFS but not part of the FileSystem abstract base class. It still works if the function is not implemented, but issues a lot of warnings and is distracting. It would help make it work smoother if we added the same method in the NativeAzureFileSystem class.