Whilst the chennuri gouri shankar answer with a link to the Hadoop Connector allows an existing Kognitio instance to connect to a Hadoop cluster, you can also run Kognitio as a YARN application on your Hadoop cluster, which has a number of benefits:
For more details on downloading and using Kognitio on Hadoop see on-hadoop
Note that if you have problems getting permission to evaluate new software on your in-house Hadoop cluster(s), you can try on Amazon EMR (for free, except for the costs of the Amazon resource). With spot pricing you can run a 5TB machine with 640 processors for $15 per hour currently. More information in this blog post from our website.