MAPREDUCE-4062. AM Launcher thread can hang forever (tgraves via bobby)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1309046 13f79535-47bb-0310-9956-ffa450edef68

hadoop-mapreduce-project/CHANGES.txt

@@ -28,6 +28,8 @@ Release 0.23.3 - UNRELEASED
     MAPREDUCE-4012 Hadoop Job setup error leaves no useful info to users 
     (when LinuxTaskController is used). (tgraves)
 
+    MAPREDUCE-4062. AM Launcher thread can hang forever (tgraves via bobby)
+
 Release 0.23.2 - UNRELEASED
 
   INCOMPATIBLE CHANGES