HADOOP-9593 stack trace printed at ERROR for all yarn clients without hadoop.home set

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1485842 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4807. createSocketForPipeline() should not include timeout extension on connect. Contributed by Cristina Abad.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1485861 13f79535-47bb-0310-9956-ffa450edef68
YARN-548. Add tests for YarnUncaughtExceptionHandler (Vadim Bondarev via jeagles)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1485877 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4714. Log short messages in Namenode RPC server for exceptions meant for clients. Contributed by Kihwal Lee.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1485881 13f79535-47bb-0310-9956-ffa450edef68
YARN-711. Copied BuilderUtil methods in individual API records as BuilderUtils is going to be dismantled. Contributed by Jian He.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1485888 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd