ZooKeeper cleanup and refactor
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Key: HBASE-2696
URL: https://issues.apache.org/jira/browse/HBASE-2696
Project: HBase
Issue Type: Sub-task
Components: zookeeper
Reporter: Jonathan Gray
Priority: Critical
Fix For: 0.21.0
Currently almost everything we do with ZooKeeper is stuffed into a single class
{{ZookeeperWrapper}}.
This issue will deal with cleaning up our usage of ZK, adding some new
abstractions to help with the master changes, splitting up watchers from
utility methods, and nailing down the contracts of our ZK methods with respect
to setting watchers, throwing exceptions, etc...
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