WSO2 Storage Server ships preconfigured HDFS file system. In the default configuration HDFS is disabled and user has to enable it by disabling the system variable named disable.hdfs.startup in $CARBON_HOME/bin/wso2server.sh
enable.hdfs.startup=true
HDFS Name Node
1. To start HDFS name node, open a command prompt (in Windows) or a text Linux console (in Linux) in $SS_HOME/bin directory and execute wso2server.bat (in Windows) or wso2server.sh (in Linux).
2. To disable HDFS name node at the Storage Server start-up, execute the above command with the following properties.
bin/wso2server.sh -Ddisable.hdfs.namenode.startup=true
3. To introduce a star-tup delay to name node:
bin/wso2server.sh -Dhdfs.namenode.startup.delay=400000
HDFS Data Node
1. To start the HDFS data node, change the directory to $SS_HOME
HADOOP_SECURE_DN_USER=<user> sudo -E bin/hadoop datanode
The user should have sudo privileges.
2. To format HDFS name node, cache the file system related user ticket:
$kinit hdfs/node0
Next, change the directory to $SS_HOME and execute:
bin/hadoop name node -format