commit d8f3016eb6c145c8e5c7623b280df8be4e9f6afe

Author: Boris Shkolnik <borya@yahoo-inc.com>
Date:   Mon Mar 1 15:18:55 2010 -0800

    HADOOP:6600 from https://issues.apache.org/jira/secure/attachment/12437534/HADOOP-6600-BP20-fix.patch
    
    +++ b/YAHOO-CHANGES.txt
    +
    +    HADOOP-6600. Fix for branch backport only. Comparing of user should use
    +    equals. (boryas).
    +


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.20-security-patches@1077259 13f79535-47bb-0310-9956-ffa450edef68

src/core/org/apache/hadoop/security/authorize/ServiceAuthorizationManager.java

@@ -80,7 +80,7 @@ public class ServiceAuthorizationManager {
         clientPrincipal = conf.get(clientKey);
       }
     }
-    if((clientPrincipal != null && clientPrincipal != user.getUserName()) || 
+    if((clientPrincipal != null && !clientPrincipal.equals(user.getUserName())) || 
         !acl.isUserAllowed(user)) {
       auditLOG.warn(AUTHZ_FAILED_FOR + user + " for protocol="+protocol);
       throw new AuthorizationException("User " + user +