YARN-629. Make YarnRemoteException not be rooted at IOException. Contributed by Xuan Gong.
MAPREDUCE-5204. Handling YarnRemoteException separately from IOException in MR app after YARN-629. Contributed by Xuan Gong.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1479680 13f79535-47bb-0310-9956-ffa450edef68
YARN-633. Changed RMAdminProtocol api to throw IOException and YarnRemoteException. Contributed by Xuan Gong.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1479738 13f79535-47bb-0310-9956-ffa450edef68
YARN-632. Changed ContainerManager api to throw IOException and YarnRemoteException. Contributed by Xuan Gong.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1479740 13f79535-47bb-0310-9956-ffa450edef68
YARN-45. Add protocol for schedulers to request containers back from
ApplicationMasters. Contributed by Carlo Curino and Chris Douglas.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1479771 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9540. Expose the InMemoryS3 and S3N FilesystemStores implementations for Unit testing. Hari

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1479985 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4804. WARN when users set the block balanced preference percent below 0.5 or above 1.0. Contributed by Stephen Chu.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1480098 13f79535-47bb-0310-9956-ffa450edef68
Move the CHANGES.txt entry for HDFS-4804 from BUG to IMPROVEMENT.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1480101 13f79535-47bb-0310-9956-ffa450edef68
Merge remote-tracking branch 'apache/trunk' into MAPREDUCE-5203
Add test and make the ContainerLauncher implementation configurable.