YARN-283. Fair scheduler fails to get queue info without root prefix. (sandyr via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1424999 13f79535-47bb-0310-9956-ffa450edef68

hadoop-yarn-project/CHANGES.txt

@@ -135,6 +135,9 @@ Release 2.0.3-alpha - Unreleased
     YARN-282. Fair scheduler web UI double counts Apps Submitted. 
     (sandyr via tucu)
 
+    YARN-283. Fair scheduler fails to get queue info without root prefix. 
+    (sandyr via tucu)
+
 Release 2.0.2-alpha - 2012-09-07 
 
     YARN-9. Rename YARN_HOME to HADOOP_YARN_HOME. (vinodkv via acmurthy)

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/QueueManager.java

@@ -227,6 +227,9 @@ public class QueueManager {
    * Return whether a queue exists already.
    */
   public boolean exists(String name) {
+    if (!name.startsWith(ROOT_QUEUE + ".") && !name.equals(ROOT_QUEUE)) {
+      name = ROOT_QUEUE + "." + name;
+    }
     synchronized (queues) {
       return queues.containsKey(name);
     }