Apache Spark is an open-source, easy to use, flexible, big data framework or unified analytics engine used for large-scale data processing. It is a cluster computing framework for real-time processing. Apache Spark can be set upon Hadoop, standalone, or in the cloud and capable of assessing diverse data sources, including HDFS, Cassandra, and others. Apache Spark provides an interface for entire programming clusters with implicit data parallelism and fault tolerance.
Apache Spark is one of the most successful projects in the Apache Software Foundation. It is evolved as the market leader for Big Data processing. Nowadays, many organizations run Spark on clusters with thousands of nodes. Some big companies which have adopted Apache Spark are Amazon, eBay, Yahoo etc.
