Hadoop version 2 has transitioned from an application to a Big Data platform. Reports of its demise are premature at best.
http://www.linuxpromagazine.com/Issues/2015/172/Hadoop-2-and-Apache-Spark
Encrypting your data is becoming increasingly important, but you don’t always have to use an encrypted filesystem. Sometimes just encrypting files is enough.
Nethogs knows which programs and users are monopolizing the system's network connection.
http://www.linuxpromagazine.com/Issues/2015/173/Nethogs
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