What is the difference between Hadoop and Splunk?

Splunk Hadoop Connect provides bi-directional integration to move data between the Splunk platform and Hadoop. Deploy the Splunk platform for real-time collection, indexing, analysis, and visualizations and then forward events to Hadoop for archiving and additional batch analytics. You can also import data that is already stored in Hadoop.

With Splunk Hadoop Connect, you can:

Deliver events in their raw form or preprocessed from the Splunk platform to Hadoop Distributed File System (HDFS) or a mounted file system.

 Explore HDFS and your mounted file system.

Import data from HDFS into the Splunk platform at search or index time, if you are using the Splunk platform version 5.0 or later.