Cluster Setup¶

Settings¶

Please add the following configs to tajo-site.xml file:

<property>
  <name>tajo.rootdir</name>
  <value>hdfs://hostname:port/tajo</value>
</property>

<property>
  <name>tajo.master.umbilical-rpc.address</name>
  <value>hostname:26001</value>
</property>

<property>
  <name>tajo.master.client-rpc.address</name>
  <value>hostname:26002</value>
</property>

<property>
  <name>tajo.resource-tracker.rpc.address</name>
  <value>hostname:26003</value>
</property>

<property>
  <name>tajo.catalog.client-rpc.address</name>
  <value>hostname:26005</value>
</property>

Workers¶

The file conf/workers lists all host names of workers, one per line. By default, this file contains the single entry localhost. You can easily add host names of workers via your favorite text editor.

For example:

$ cat > conf/workers
host1.domain.com
host2.domain.com
....

<ctrl + d>

Make base directories and set permissions¶

If you want to know Tajo’s configuration in more detail, see Configuration page. Before launching the tajo, you should create the tajo root dir and set the permission as follows:

$ $HADOOP_HOME/bin/hadoop fs -mkdir       /tajo
$ $HADOOP_HOME/bin/hadoop fs -chmod g+w   /tajo

Launch a Tajo cluster¶

Then, execute start-tajo.sh

$ $TAJO_HOME/bin/start-tajo.sh