Changing the Default HDFS Configuration
- Former user (Deleted)
- Former user (Deleted)
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
-Ddisable.hdfs.startup="false"
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, change the property value of "disable.hdfs.namenode" to "false" in the wso2server.bat (in Windows) or wso2server.sh (in Linux).
-Ddisable.hdfs.namenode.startup=false
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