HDFS Architecture

Given below is the architecture of a Hadoop File System.

HDFS follows the master-slave architecture and it has the following elements.

Namenode

Datanode

Block

Features of HDFS

• It is suitable for the distributed storage and processing.
• Hadoop provides a command interface to interact with HDFS.
• The built-in servers of namenode and datanode help users to easily check the status of cluster.
• Streaming access to file system data.
• HDFS provides file permissions and authentication.

Hadoop - HDFS Overview

Hadoop File System was developed using distributed file system design. It is run on commodity hardware. Unlike other distributed systems, HDFS is highly faulttolerant and designed using low-cost hardware.

HDFS holds very large amount of data and provides easier access. To store such huge data, the files are stored across multiple machines. These files are stored in redundant fashion to rescue the system from possible data losses in case of failure. HDFS also makes applications available to parallel processing.