HBASE-11005 Remove dead code in HalfStoreFileReader#getScanner#seekBefore() (Gustavo Anatoly)



git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1588295 13f79535-47bb-0310-9956-ffa450edef68
HBASE-11009 We sync every hbase:meta table write twice

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1588329 13f79535-47bb-0310-9956-ffa450edef68
HBASE-10984 Add description about setting up htrace-zipkin to documentation

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1588333 13f79535-47bb-0310-9956-ffa450edef68