MAPREDUCE-5244. Two functions changed their visibility in JobStatus. (zjshen via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1482622 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5232. Add a configuration to be able to log classpath and other system properties on mapreduce JVMs startup. Contributed by Sangjin Lee.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1482643 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4813. Add volatile to BlocksMap.blocks so that the replication thread can see the updated value.  Contributed by Jing Zhao


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1482658 13f79535-47bb-0310-9956-ffa450edef68
HDFS-3180. Add socket timeouts to WebHdfsFileSystem.  Contributed by Chris Nauroth


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1482661 13f79535-47bb-0310-9956-ffa450edef68