[HADOOP-9336] Allow UGI of current connection to be queried

• Type: Improvement
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 0.23.0, 2.0.0-alpha, 3.0.0
• Fix Version/s: 0.23.7, 2.1.0-beta
• Component/s: ipc
• Target Version/s: 3.0.0, 0.23.7, 2.1.0-beta
• Assignee: Daryn Sharp
• Reporter: Daryn Sharp
• Created: 26/Feb/13 20:22
• Updated: 27/Aug/13 23:06
• Resolved: 28/Feb/13 22:07

Description

Querying UGI.getCurrentUser is synch'ed and inefficient for short-lived RPC requests. Since the connection already contains the UGI, there should be a means to query it directly and avoid a call to UGI.getCurrentUser.

Issue Links

• depends upon: HADOOP-9339 IPC.Server incorrectly sets UGI auth type
• is depended upon by: HDFS-4532 RPC call queue may fill due to current user lookup