From d1abc5d4fc00bb1b226066684556ba16ace71744 Mon Sep 17 00:00:00 2001
From: Xuan <xgong@apache.org>
Date: Fri, 6 Mar 2015 13:32:05 -0800
Subject: [PATCH] YARN-3227. Timeline renew delegation token fails when RM
 user's TGT is expired. Contributed by Zhijie Shen

---
 hadoop-yarn-project/CHANGES.txt                                | 3 +++
 .../apache/hadoop/yarn/client/api/impl/TimelineClientImpl.java | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/hadoop-yarn-project/CHANGES.txt b/hadoop-yarn-project/CHANGES.txt
index accde785c8e..d073169d384 100644
--- a/hadoop-yarn-project/CHANGES.txt
+++ b/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
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/client/api/impl/TimelineClientImpl.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/client/api/impl/TimelineClientImpl.java
index af684929e1d..c05d65bbe82 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/client/api/impl/TimelineClientImpl.java
+++ b/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