Hi BigD,
I want to share with you a quick demo of replication. Let’s open the DFS health page first.
So the content will be replicated 3 times. This can be overridden in /opt/hadoop/etc/hadoop/hdfs-site.xml as given below.
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
Let’s make it as 1, using CLI.
hadoop@gandhari:~$ hadoop dfs -setrep -w 1 /data
DEPRECATED: Use of this script to execute hdfs command is deprecated.
Instead use the hdfs command for it.
Replication 1 set: /data
Waiting for /data ... done
