Resource Groups

Resource groups are a Simba Presto JDBC Connector feature that allows administrators to control resource usage and query scheduling.

To use resource groups, in the connection URL, define either the APPLICATIONNAME or CLIENTTAGS properties, and the ApplicationNamePrefix property if required. If the Presto server has a resource group that selects for those values, then the queries are executed according to the policies defined for that resource group.

Alternatively, you can set the APPLICATIONNAME and CLIENTTAGS properties on the server side. To do this, call setClientInfo() using the APPLICATIONNAME and CLIENTTAGS keywords.

Important:

When you call setClientInfo(), make sure that the APPLICATIONNAME and CLIENTTAGS keywords are in capital letters.

For example:

java.util.Properties pr = new java.util.Properties();

pr.put("APPLICATIONNAME", "Simba");

pr.put("CLIENTTAGS", "Presto, ClientApp" );

conn.setClientInfo(pr);

Or, as another example:

conn.setClientInfo("APPLICATIONNAME", "simba");

conn.setClientInfo("CLIENTTAGS", "Presto, Simba");