Tajo Master Configuration¶

Tajo Rootdir¶

Tajo uses HDFS as a primary storage layer. So, one Tajo cluster instance should have one tajo rootdir. A user is allowed to specific your tajo rootdir as follows:

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

Tajo rootdir must be a url form like scheme://hostname:port/path. The current implementaion only supports hdfs:// and file:// schemes. The default value is file:///tmp/tajo-${user.name}/.

TajoMaster Heap Memory Size¶

The environment variable TAJO_MASTER_HEAPSIZE in conf/tajo-env.sh allow Tajo Master to use the specified heap memory size.

If you want to adjust heap memory size, set TAJO_MASTER_HEAPSIZE variable in conf/tajo-env.sh with a proper size as follows:

TAJO_MASTER_HEAPSIZE=2000

The default size is 1000 (1GB).