HDFS in Practice
This lesson provides hands-on practice with HDFS.
We'll cover the following...
HDFS in Practice
So far, we covered the theory behind HDFS, its different components and a higher level of understanding on its working. Now we delve into a hands-on exercise interacting with HDFS in a pseudo-distributed cluster running in a docker container. The path environment variable has been set correctly so that the hdfs executable is available. The hdfs command line utility exposes three kinds of commands:
- Admin commands
- Client commands
- Daemon commands
Client commands are the most commonly used. Admin and daemon commands are usually used by Hadoop administrators. Our overview of the commands isn’t a comprehensive study of all the commands and features exposed by the hdfs utility. Rather, it gives the user enough familiarity to ...