svn merge -c 1491611 FIXES: MAPREDUCE-5308. Shuffling to memory can get out-of-sync when fetching multiple compressed map outputs. Contributed by Nathan Roberts


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1491614 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4752. Merge 1491631 from trunk

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1491633 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9604. Javadoc of FSDataOutputStream is slightly inaccurate. Contributed by Jingguo Yao.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1491669 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4878. On Remove Block, block is not removed from neededReplications queue. Contributed by Tao Luo.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1491672 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9630. [RPC v9] Remove IpcSerializationType. (Junping Du via llu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1491683 13f79535-47bb-0310-9956-ffa450edef68