1.

Explain About Catalog Configuration?

Answer»

If you WANT to customize the CATALOG service, COPY $TAJO_HOME/conf/catalog-site.xml.template to catalog-site.xml. Then, add the following configs to catalog-site.xml. NOTE that the default configs are ENOUGH to launch Tajo cluster in most cases.

tajo.catalog.master.addr - If you want to launch a Tajo cluster in distributed mode, you must specify this address. For more detail information, see Default Ports.

tajo.catalog.store.class - If you want to change the persistent storage of the catalog server, specify the class name. Its default value is tajo.catalog.store.DerbyStore. In the current version, Tajo provides three persistent storage classes as follows:

tajo.catalog.store.DerbyStore - this storage class uses Apache Derby.

tajo.catalog.store.MySQLStore - this storage class uses MySQL.

tajo.catalog.store.MemStore - this is the in-memory storage. It is only used in unit tests to shorten the duration of unit tests.

If you want to customize the catalog service, copy $TAJO_HOME/conf/catalog-site.xml.template to catalog-site.xml. Then, add the following configs to catalog-site.xml. Note that the default configs are enough to launch Tajo cluster in most cases.

tajo.catalog.master.addr - If you want to launch a Tajo cluster in distributed mode, you must specify this address. For more detail information, see Default Ports.

tajo.catalog.store.class - If you want to change the persistent storage of the catalog server, specify the class name. Its default value is tajo.catalog.store.DerbyStore. In the current version, Tajo provides three persistent storage classes as follows:

tajo.catalog.store.DerbyStore - this storage class uses Apache Derby.

tajo.catalog.store.MySQLStore - this storage class uses MySQL.

tajo.catalog.store.MemStore - this is the in-memory storage. It is only used in unit tests to shorten the duration of unit tests.



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