[HDFS-4542] Webhdfs doesn't support secure proxy users

• Type: Sub-task
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 0.23.0, 2.0.0-alpha, 3.0.0
• Fix Version/s: 3.0.0, 0.23.7, 2.1.0-beta
• Component/s: webhdfs
• Target Version/s: 3.0.0, 0.23.7, 2.1.0-beta
• Assignee: Daryn Sharp
• Reporter: Daryn Sharp
• Created: 01/Mar/13 21:27
• Updated: 27/Aug/13 23:08
• Resolved: 05/Mar/13 20:23

Description

Webhdfs doesn't ever send the DoAsParam in the REST calls for proxy users. Proxy users on a non-secure cluster "work" because the server sees them as the effective user, not a proxy user, which effectively bypasses the proxy authorization checks. On secure clusters, it doesn't work at all in part due to wrong ugi being used for the connection (HDFS-3367), but then it fails because the effective user tries to use a non-proxy token for the real user.

Issue Links

• depends upon: HADOOP-9352 Expose UGI.setLoginUser for tests
• is required by: HDFS-3367 WebHDFS doesn't use the logged in user when opening connections
• relates to: HDFS-4560 Webhdfs cannot use tokens obtained by another user