Cascading™ is a Java application framework produced by Concurrent, Inc. that enables developers to quickly and easily build rich enterprise-grade Data Processing and Machine Learning applications that can be deployed and managed across private or cloud-based Hadoop clusters.
Note: Cascading is not part of MapR distribution and not supported by MapR. However, like many other open source technologies, it can be used with MapR. The following information provides relevant details about using Cascading with MapR.

The mt command is the wrapper around Cascading. Multitool, a command line tool for processing large text files and datasets (like sed and grep on unix). The mt command is located in the /opt/mapr/contrib/multitool/bin directory.