YARN-3227. Timeline renew delegation token fails when RM user's TGT is

expired. Contributed by Zhijie Shen

hadoop-yarn-project/CHANGES.txt

@@ -713,6 +713,9 @@ Release 2.7.0 - UNRELEASED
     YARN-3242. Asynchrony in ZK-close can lead to ZKRMStateStore watcher receiving 
     events for old client. (Zhihai Xu via kasha)
 
+    YARN-3227. Timeline renew delegation token fails when RM user's TGT is expired
+    (Zhijie Shen via xgong)
+
 Release 2.6.0 - 2014-11-18
 
   INCOMPATIBLE CHANGES

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/client/api/impl/TimelineClientImpl.java

@@ -439,6 +439,7 @@ public class TimelineClientImpl extends TimelineClient {
         UserGroupInformation callerUGI = isProxyAccess ?
             UserGroupInformation.getCurrentUser().getRealUser()
             : UserGroupInformation.getCurrentUser();
+        callerUGI.checkTGTAndReloginFromKeytab();
         try {
           return callerUGI.doAs(action);
         } catch (UndeclaredThrowableException e) {
@@ -488,6 +489,7 @@ public class TimelineClientImpl extends TimelineClient {
           : UserGroupInformation.getCurrentUser();
       final String doAsUser = isProxyAccess ?
           UserGroupInformation.getCurrentUser().getShortUserName() : null;
+      callerUGI.checkTGTAndReloginFromKeytab();
       try {
         return callerUGI.doAs(new PrivilegedExceptionAction<HttpURLConnection>() {
           @Override