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Hadoop Security Explained

Brilliant article:

In nutshell, Hadoop has strong support for authentication and authorization. On the other hand privacy and data integrity is optionally supported when Hadoop services are accessed through RPC and HTTP, while the actual HDFS blocks are transferred unencrypted. Hadoop assumes network involved in HDFS block transfer is secure and not publicly accessible for sniffing, which is not a bad assumption for private enterprise network.

Original title and link: Hadoop Security Explained (NoSQL database©myNoSQL)

via: http://clustermania.blogspot.com/2011/11/hadoop-how-it-manages-security.html