| ************************** |
| The storage-site.json File |
| ************************** |
| |
| This file is for configuring :doc:`/table_management/tablespaces`. |
| The syntax of ``storage-site.json`` is like this basically: |
| |
| .. code:: json |
| |
| { |
| "spaces": { |
| <space config 1>, <space config 2>, ... |
| }, |
| "storages": { |
| <storage config 1>, <storage config 2>, ... |
| } |
| } |
| |
| ------ |
| Spaces |
| ------ |
| |
| This is a section for registering tablespaces. Some space config example is here: |
| |
| .. code:: json |
| |
| "spaces": { |
| "jdbc_pgsql": { |
| "uri": "jdbc:postgresql://127.0.0.1:5740/origin", |
| "configs": { |
| "mapped_database":"tajo_pgsql_origin", |
| "connection_properties": { |
| "user":"tajouser", |
| "password":"123456" |
| } |
| } |
| }, |
| ... |
| } |
| |
| * **space name** : Your own tablespace name which indicates a specific tablespace. Alpha-numeric characters and underscore(_) are permitted. |
| * **uri** : An URI address of a tablespace |
| * **configs** : It is optional. You can specify it as JSON object to pass to each tablespace handler. |
| |
| After you specify a tablespace, you can use it in `create table statement <../sql_language/ddl.html#create-table>`_. |
| |
| -------- |
| Storages |
| -------- |
| |
| This is for registering storage format and custom storage handler class. |
| Tajo already supports HDFS, HBase, PostgreSQL, Amazon S3, Openstack Swift, etc, thus in usual cases using mentioned storages, you don't have to add any ``storages`` configuration. |
| However, if you want to use your custom storage as one of Tajo's data source, you need to add a configuration for your storage. Here is an example of HDFS storage. |
| See :doc:`storage_plugins/overview` for more information. |
| |
| .. code:: json |
| |
| "storages": { |
| "hdfs": { |
| "handler": "org.apache.tajo.storage.FileTablespace", |
| "default-format": "text" |
| }, |
| ... |
| } |