Hedwig Server stays in "disconnected" state when connection to ZK dies but gets 

                 Key: ZOOKEEPER-886
                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-886
             Project: Zookeeper
          Issue Type: Bug
          Components: contrib-hedwig
            Reporter: Erwin Tam
            Assignee: Erwin Tam

The Hedwig Server is connected to ZooKeeper.  In the ZkTopicManager, it 
registers a watcher so that if it ever gets disconnected from ZK, it will 
temporarily fail all incoming requests since the Hedwig server does not know 
for sure if it is still the master for the topics.  When the ZK client gets 
reconnected, the logic currently is wrong and it does not unset the suspended 
flag.  Thus once it gets disconnected, it will stay in the suspended state 
forever, thereby making the Hedwig server hub dead.

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