hadoop What is HDFS? HDFS - Hadoop Distributed File System
Example
Hadoop Distributed File System (HDFS) is a Java-based file system that provides scalable and reliable data storage that is designed to span large clusters of commodity servers. HDFS, MapReduce, and YARN form the core of Apache™ Hadoop®.
HDFS is designed to be highly fault-tolerant, which is achieved by saving multiple copies(3 by default) of a given data block across multiple nodes.
