To step through the recipes in this chapter, make sure you have completed the recipes in Chapter 1, Hadoop Architecture and Deployment or at least understand the basic Hadoop cluster setup.
sshto the master node, which is Namenode, and navigate to the directory where Hadoop is installed. In the previous chapter, Hadoop was installed at
$ ssh firstname.lastname@example.org
Hadoopuser, or any other user that is running Hadoop, by using the following:
$ sudo su - hadoop
hdfs-site.xmlfile and modify the parameter to reflect the changes, as shown in the following screenshot:
dfs.blocksizeis the parameter that decides on the value of the HDFS block size. The unit is ...