HBASE-8596 [docs] Add docs about RegionServer "draining" mode


git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1485442 13f79535-47bb-0310-9956-ffa450edef68
DOC: Suggestion from our Alejandro

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1485466 13f79535-47bb-0310-9956-ffa450edef68
HBASE-7649 ADDENDUM client retry timeout doesn't need to do x2 fallback when going to different server

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1485513 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8574 Add how to rename a table in th docbook (addendum)

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1485515 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8564 ADDENDUM TestMetricsRegionServer depends on test order

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1485525 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8504 HTable.getRegionsInRange() should provide a non-cached API

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1485540 13f79535-47bb-0310-9956-ffa450edef68