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| Tajo Master Configuration |
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| Tajo Rootdir |
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| 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: |
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| .. code-block:: xml |
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| <property> |
| <name>tajo.rootdir</name> |
| <value>hdfs://namenode_hostname:port/path</value> |
| </property> |
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| 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}/``. |
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| TajoMaster Heap Memory Size |
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| The environment variable TAJO_MASTER_HEAPSIZE in conf/tajo-env.sh allow Tajo Master to use the specified heap memory size. |
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| If you want to adjust heap memory size, set ``TAJO_MASTER_HEAPSIZE`` variable in ``conf/tajo-env.sh`` with a proper size as follows: |
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| .. code-block:: sh |
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| TAJO_MASTER_HEAPSIZE=2000 |
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| The default size is 1000 (1GB). |
