Hadoop concepts
Apache Hadoop is the leading open source big data platform that can store and analyze massive amounts of structured and unstructured data efficiently and can be hosted on low cost commodity hardware. There are other technologies that complement Hadoop under the big data umbrella such as MongoDB, a NoSQL database; Cassandra, a document database; and VoltDB, an in-memory database. This section describes Apache Hadoop core concepts and its ecosystem.
Brief history of Hadoop
Doug Cutting created Hadoop; he named it after his kid's stuffed yellow elephant and it has no real meaning. In 2004, the initial version of Hadoop was launched as Nutch Distributed Filesystem (NDFS). In February 2006, Apache Hadoop project was officially started ...
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