svn merge -c 1339000. FIXES: MAPREDUCE-4250. hadoop-config.sh missing variable exports, causes Yarn jobs to fail with ClassNotFoundException MRAppMaster. (phunt via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1356764 13f79535-47bb-0310-9956-ffa450edef68

hadoop-mapreduce-project/CHANGES.txt

@@ -255,6 +255,9 @@ Release 0.23.3 - UNRELEASED
     MAPREDUCE-4228. mapreduce.job.reduce.slowstart.completedmaps is not working
     properly (Jason Lowe via bobby)
 
+    MAPREDUCE-4250. hadoop-config.sh missing variable exports, causes Yarn 
+    jobs to fail with ClassNotFoundException MRAppMaster. (phunt via tucu)
+
 Release 0.23.2 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-mapreduce-project/hadoop-yarn/bin/yarn-config.sh

@@ -49,7 +49,7 @@ then
 fi
  
 # Allow alternate conf dir location.
-YARN_CONF_DIR="${HADOOP_CONF_DIR:-$YARN_HOME/conf}"
+export YARN_CONF_DIR="${HADOOP_CONF_DIR:-$YARN_HOME/conf}"
 
 #check to see it is specified whether to use the slaves or the
 # masters file