Ferenc Erdelyi created YARN-11468:
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             Summary: Zookeeper SSL/TLS support
                 Key: YARN-11468
                 URL: https://issues.apache.org/jira/browse/YARN-11468
             Project: Hadoop YARN
          Issue Type: Improvement
          Components: resourcemanager
            Reporter: Ferenc Erdelyi


Zookeeper 3.5.5 server can operate with SSL/TLS secure connection with its 
clients.

[https://cwiki.apache.org/confluence/display/ZOOKEEPER/ZooKeeper+SSL+User+Guide]

The SSL communication should be possible in the different parts of YARN, where 
it communicates with Zookeeper servers. The Zookeeper clients are used in the 
following places:
 * ResourceManager
 * ZKConfigurationStore
 * ZKRMStateStore

The flag to enable SSL communication and the required parameters should be 
provided by different configuration parameters, corresponding to the different 
use cases. 



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