HBASE-7643 HFileArchiver.resolveAndArchive() race condition may lead to snapshot data loss

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1438972 13f79535-47bb-0310-9956-ffa450edef68
HBASE-7682 Replace HRegion custom File-System debug, with FSUtils.logFileSystemState()

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1438974 13f79535-47bb-0310-9956-ffa450edef68
HBASE-7681 Address some recent random test failures

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1439003 13f79535-47bb-0310-9956-ffa450edef68