HDFS means Hadoop Distributed File System which is world’s most trusted storage engine designed to work on commodity hardware. It is designed to store very large files which may be of size of TB’s. Here commodity hardware means the systems which we use in our day-to-day life like of less expensive, less RAM, low memory, etc.
Some of the features of HDFS are fault-tolerance, scalability, reliability, high throughput, distributed nature.
In HDFS we can write and read the data which is distributed. For storing large size files, HDFS provides high data bandwidth.
The two main principles used in HDFS are storing of less number of large files and write-once-read-many access model for files.
We will see the detailed concepts in the tutorial.