Definitely a nice article by Hortonworks on how to combine Hadoop and Hortonworks, in order to create a powerful analytics pipeline.
Full article:
http://hortonworks.com/blog/fast-search-and-analytics-on-hadoop-with-elasticsearch-and-hdp/
http://hortonworks.com/blog/fast-search-and-analytics-on-hadoop-with-elasticsearch-and-hdp/
Hortonworks customers can now enhance their Hadoop applications with Elasticsearch real-time data exploration, analytics, logging and search features, all designed to help businesses ask better questions, get clearer answers and better analyze their business metrics in real-time.
Hortonworks Data Platform and Elasticsearch make for a powerful combination of technologies that are extremely useful to anyone handling large volumes of data on a day-to-day basis. With the ability of YARN to support multiple workloads, customers with current investments in flexible batch processing can also add real-time search applications from Elasticsearch.

Image http://hortonworks.com/