Big data & analytics bring together open source technologies. That works together to accelerate the data pipeline. They are : Spark - for large-scale data processing

Mesos -  for cluster resource management

Akka - for data-heavy applications

Cassandra - for storage engine and 

Kafka - for event processing

To gain the full value of data, there is a need to analyze it in real time. Read more at:  http://www.cio.com/article/3068672/analytics/igniting-faster-analytics-with-the-smack-stack.html