HBASE-1936 ClassLoader that loads from hdfs; useful adding filters to classpath without having to restart services

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1467092 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8119 Optimize StochasticLoadBalancer

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1467109 13f79535-47bb-0310-9956-ffa450edef68
HBASE-7605 TestMiniClusterLoadSequential fails in trunk build on hadoop2


git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1467135 13f79535-47bb-0310-9956-ffa450edef68