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

expired. Contributed by Zhijie Shen

(cherry picked from commit d1abc5d4fc00bb1b226066684556ba16ace71744)
(cherry picked from commit 56c2050ab7c04e9741bcba9504b71e5a54d09eea)
(cherry picked from commit 780a9b1a98827a692e0ea9fbc92f9d1ab979e3e0)

hadoop-yarn-project/CHANGES.txt

@@ -105,6 +105,9 @@ Release 2.6.1 - 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

@@ -425,6 +425,7 @@ public class TimelineClientImpl extends TimelineClient {
         UserGroupInformation callerUGI = isProxyAccess ?
             UserGroupInformation.getCurrentUser().getRealUser()
             : UserGroupInformation.getCurrentUser();
+        callerUGI.checkTGTAndReloginFromKeytab();
         try {
           return callerUGI.doAs(action);
         } catch (UndeclaredThrowableException e) {
@@ -474,6 +475,7 @@ 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