HBASE-7577 Review names of all znodes in zk to make sure they are sensible before 0.96

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1435995 13f79535-47bb-0310-9956-ffa450edef68
HBASE-5138 [ref manual] Add a discussion on the number of regions

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1435998 13f79535-47bb-0310-9956-ffa450edef68
HBASE-7507 Make memstore flush be able to retry after exception (Chunhui)

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1436111 13f79535-47bb-0310-9956-ffa450edef68