HDS-5118. Provide testing support for DFSClient to drop RPC responses. Contributed by Jing Zhao.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1520637 13f79535-47bb-0310-9956-ffa450edef68
Move HDFS-5118 to 2.1.1-beta section.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1520650 13f79535-47bb-0310-9956-ffa450edef68
Fixing CHANGES.txt for YARN-758 as it is now merged into branch-2.1-beta.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1520659 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4879. Add BlockedArrayList collection to avoid CMS full GCs (Contributed by Todd Lipcon)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1520667 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-8704. add request logging to jetty/httpserver (jeagles)

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