HADOOP-9343. Allow additional exceptions through the RPC layer. (sseth)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1452918 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4542. Webhdfs doesn't support secure proxy users. Contributed by Daryn Sharp.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1452978 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4540. Namenode http server should use the web authentication keytab for spnego principal. Contributed by Arpit Gupta.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1453025 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4519. Support overriding jsvc binary and log file locations when launching secure datanode. Contributed by Chris Nauroth.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1453050 13f79535-47bb-0310-9956-ffa450edef68
YARN-227. Application expiration difficult to debug for end-users (Jason Lowe via jeagles)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1453080 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5027. Shuffle does not limit number of outstanding connections (Robert Parker via jeagles)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1453098 13f79535-47bb-0310-9956-ffa450edef68
Merging latest trunk to branch-trunk-win

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-trunk-win@1453127 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9368. Add timeouts to new tests in branch-trunk-win. Contributed by Arpit Agarwal.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-trunk-win@1453157 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-3685. Fix bugs in MergeManager to ensure compression codec is appropriately used and that on-disk segments are correctly sorted on file-size. Contributed by Anty Rao and Ravi Prakash.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1453365 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4544. Error in deleting blocks should not do check disk, for all types of errors. Contributed by Arpit Agarwal.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1453436 13f79535-47bb-0310-9956-ffa450edef68
Merging trunk to branch-trunk-win

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-trunk-win@1453456 13f79535-47bb-0310-9956-ffa450edef68
Merge branch 'branch-trunk-win' into HADOOP-8973