Here’s what you learned in this chapter:
The hdfs dfs command is your ally in performing day-to-day work with HDFS files and directories
The hdfs dfsadmin command is highly useful for checking the status of the DataNodes and the way HDFS data is spread across the DataNodes
By granting space and file quotas, you can control HDFS usage.
RThe hdfs du and hdfs df commands are handy for finding out how your cluster is using its storage
Balancing your cluster’s data on a regular basis provides computational benefits by evenly spreading HDFS data across all the nodes of your Hadoop cluster.