HADOOP-9433 TestLocalFileSystem#testHasFileDescriptor leaks file handle (Chris Nauroth via sanjay)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1460922 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5062. Fix MR AM to read max-retries from the RM. Contributed by *Zhijie Shen.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1460923 13f79535-47bb-0310-9956-ffa450edef68
YARN-498. Unmanaged AM launcher does not set various constants in env for an AM, also does not handle failed AMs properly (Hitesh Shah via bikas)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1460954 13f79535-47bb-0310-9956-ffa450edef68
YARN-469. Make scheduling mode in FS pluggable. (kkambatl via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1460961 13f79535-47bb-0310-9956-ffa450edef68