VoltDB Enterprise Edition with an included 30-day trial license can be downloaded from VoltDB. The download page (after registration) has several download packages:
a .tar.gz file for manual installation on 64-bit Linux
a .tar.gz file for manual installation on Mac (for development use only)
a .deb package for 64-bit Ubuntu Linux
a .rpm package for 64-bit RHEL and CentOS Linux
a link to a trial AMI on Amazon EC2
a link to the AWS Cloud Formation Template for launching a 3-node cluster on EC2
a VMware image with VoltDB pre-installed
The < ahref="http://docs.voltdb.com/UsingVoltDB/ChapGetStarted.php">online documentation describes the Operating System and Software Requirements as well as step by step instructions for installing each of the available packages.
The Welcome to VoltDB tutorial provides a quick step-by-step guide to getting a VoltDB database up and running.
Integration with MapR Hadoop involves configuring one or more EXPORT tables and configuring the HTTP Connector to your MapR Hadoop instance. This is documented in detail in here.
After successfully configuring VoltDB with export to MapR Hadoop using the export HTTP Connector, you can test it by inserting records into one of the export tables you have defined in the VoltDB schema, which can be done through any of the interfaces including the command-line SQLCMD tool, the web interface, from a client application, or from within a procedure. The records will be pushed to files in the configured target folder on HDFS and can be verified using any of the MapR HDFS interfaces.