HBASE-8469 [hadoop2] Several tests break because of HDFS-4305


git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1478203 13f79535-47bb-0310-9956-ffa450edef68
REVERT HBASE-8469.  Breaks TestOpenedRegionHandler unit test.


git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1478239 13f79535-47bb-0310-9956-ffa450edef68