aihuaxu opened a new pull request #1643:
URL: https://github.com/apache/zookeeper/pull/1643


   This is to support resolving configured DNS entry to the list of quorum 
hosts.  It will resolve the DNS into multiple ip addresses and then reverse 
lookup the host names from the ip addresses. The host name is needed in secured 
cluster for Kerberos authentication.
   
   To use this feature, the client needs to:
   1. create ZKClientConfig to set 'zookeeper.quorum.resolve-needed' to true
   2. create ZooKeeper from the constructor with provided ZKClientConfig
   
   


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