HADOOP-9485. No default value in the code for hadoop.rpc.socket.factory.class.default. Contributed by Colin Patrick McCabe.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1481208 13f79535-47bb-0310-9956-ffa450edef68
YARN-634. Modified YarnRemoteException to be not backed by PB and introduced a separate SerializedException record. Contributed by Siddharth Seth.
MAPREDUCE-5239. Updated MR App to reflect YarnRemoteException changes after YARN-634. Contributed by Siddharth Seth.
svn merge --ignore-ancestry -c 1481205 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1481209 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4533. Merge 1481178 from trunk.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1481211 13f79535-47bb-0310-9956-ffa450edef68
YARN-663. Changed ResourceTracker API and LocalizationProtocol API to throw YarnRemoteException and IOException. Contributed by Xuan Gong.
svn merge --ignore-ancestry -c 1481215 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1481216 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/branch-2' into branch-2-gd
Merge remote branch 'origin/branch-2-gd' into fb-HADOOP-9063-branch-2-gd