Bright:Configuring Hadoop
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Adding Drives in pre-installed instance
Existing configuration uses directory /disk1 and we need to add /disk2. (Assuming hadoop category exists)
Adding disks to Datanodes
cmsh
[hadooptest]% category roles hadoop
[hadooptest->category[hadoop]->roles]% configurations hadoopdatanode
[hadooptest->category[hadoop]->roles[hadoopdatanode]->configurations]% get boston-hdfs datadirectories
/disk1/hadoop/hdfs/datanode
[hadooptest->category[hadoop]->roles[hadoopdatanode]->configurations]% set boston-hdfs datadirectories /disk1/hadoop/hdfs/datanode /disk2/hadoop/hdfs/datanode
[hadooptest->category*[hadoop*]->roles*[hadoopdatanode*]->configurations*]% commit