| *************** |
| Preliminary |
| *************** |
| |
| =================================== |
| catalog-site.xml and tajo-site.xml |
| =================================== |
| Tajo's configuration is based on Hadoop's configuration system. Tajo uses two config files: |
| |
| * catalog-site.xml - configuration for the catalog server. |
| * tajo-site.xml - configuration for other tajo modules. |
| |
| Each config consists of a pair of a name and a value. If you want to set the config name ``a.b.c`` with the value ``123``, add the following element to an appropriate file. |
| |
| .. code-block:: xml |
| |
| <property> |
| <name>a.b.c</name> |
| <value>123</value> |
| </property> |
| |
| Tajo has a variety of internal configs. If you don't set some config explicitly, the default config will be used for for that config. Tajo is designed to use only a few of configs in usual cases. You may not be concerned with the configuration. |
| |
| In default, there is no ``tajo-site.xml`` in ``${TAJO}/conf`` directory. If you set some configs, first copy ``$TAJO_HOME/conf/tajo-site.xml.templete`` to ``tajo-site.xml``. Then, add the configs to your tajo-site. |
| |
| ============ |
| tajo-env.sh |
| ============ |
| |
| tajo-env.sh is a shell script file. The main purpose of this file is to set shell environment variables for TajoMaster and TajoWorker java program. So, you can set some variable as follows: |
| |
| .. code-block:: sh |
| |
| VARIABLE=value |
| |
| If a value is a literal string, type this as follows: |
| |
| .. code-block:: sh |
| |
| VARIABLE='value' |
