[HDFS-2760] HDFS notification

• Type: New Feature
• Status: Resolved
• Priority: Minor
• Resolution: Duplicate
• Affects Version/s: 0.20.2
• Labels: HDFS
• Assignee: Unassigned
• Reporter: Denny Ye
• Created: 06/Jan/12 09:36
• Updated: 09/Oct/14 01:11
• Resolved: 09/Oct/14 01:11

Description

Client would like to receive the interested namespace operation at HDFS, likes 'rename', 'block allocation' and so on. NameNode should support the changing notification to client with appropriate way.

In my opinion, I suggest the notification should be applied between NameNode RPC server and actual NameNode object (it's proxy for NameNode object).

Issue Links

• blocks: HDFS-1742 Provide hooks / callbacks to execute some code based on events happening in HDFS (file / directory creation, opening, closing, etc)
• duplicates: HDFS-210 API to get changes to the File System at NN for a window of time
• duplicates: HDFS-6634 inotify in HDFS