When you run a mapping , the Data Integration Service checks for the binary files on the cluster. If they do not exist or if they are not synchronized, the Data Integration Service prepares the files for transfer. It transfers the files to the distributed cache through the Informatica Hadoop staging directory on HDFS. By default, the staging directory is /tmp. This process replaces the requirement to install distribution packages on the Hadoop cluster.

For more information, see the

Informatica Big Data Management 10.2 Hadoop Integration Guide

.