Which DataNodes to Install VectorH On?
By default, VectorH is installed on all the active DataNodes in a Hadoop cluster, and their Fully Qualified Domain Names (FQDN) are automatically recorded in the slaves file in $II_SYSTEM/ingres/files/hdfs.
If you do not want to install VectorH on all the active DataNodes, follow this procedure:
To control the number of DataNodes used by VectorH
1. When you are prompted during the installation whether you want to set up the DataNodes, enter "n" for no.
The install process stops.
2. Edit the slaves file in $II_SYSTEM/ingres/files/hdfs to list the DataNodes you want to use.
3. Continue the installation by using the following command:
iisuhdfs datanodes
The slave nodes are set up and the installation is complete.