On Tue, May 4, 2010 at 5:13 AM, Sujitha <gs...@tce.edu> wrote: > i am working on hadoop security wherein in the first step to > authenticate users,Kerberos authentication protocol was used.
Look at the UserGroupInformation class in subversion trunk. It uses Java's JAAS interface to authenticate the user using Kerberos. The RPC connections are authenticated with Kerberos or delegation tokens that are generated by the NameNode or JobTracker. -- Owen
