HADOOP-9581. hadoop --config non-existent directory should result in error. Contributed by Ashwin Shankar


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1491548 13f79535-47bb-0310-9956-ffa450edef68
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/trunk@1491611 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4752. TestRBWBlockInvalidation fails on Windows due to file locking. Contributed by Chris Nauroth.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1491631 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-HADOOP-7435-trunk-gd