[Discuss] Merge YARN-3368 to trunk

YARN Devs, *Updates since Sep 22, 2016:* We sent a merge YARN-3368 discussion email on Sep 22, 2016 and received some valuable feedbacks, since then, we have updated: *- The biggest change* is configuration model, the latest UI project doesn't require to configure RM/Timeline-server's address

Apache Hadoop qbt Report: trunk+JDK8 on Linux/ppc64le

For more details, see https://builds.apache.org/job/hadoop-qbt-trunk-java8-linux-ppc/128/ [Oct 17, 2016 6:04:42 PM] (yzhang) HDFS-9820. Improve distcp to support efficient restore to an earlier [Oct 17, 2016 8:15:11 PM] (wang) HADOOP-13722. Code cleanup -- ViewFileSystem and InodeTree.

[jira] [Resolved] (YARN-5553) [ATSv2] "metrics" for YARN_CONTAINERS are displayed as empty.

[ https://issues.apache.org/jira/browse/YARN-5553?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Rohith Sharma K S resolved YARN-5553. - Resolution: Not A Problem Closed as Not a Problem. thank you all for discussing this JIRA.

Apache Hadoop qbt Report: trunk+JDK8 on Linux/x86

For more details, see https://builds.apache.org/job/hadoop-qbt-trunk-java8-linux-x86/198/ [Oct 17, 2016 12:04:49 PM] (weichiu) HADOOP-13661. Upgrade HTrace version. Contributed by Sean Mackrory. [Oct 17, 2016 6:04:42 PM] (yzhang) HDFS-9820. Improve distcp to support efficient restore to an