After you run the mapping, you can verify that the mapping used the Data Integration Service and new Grid Manager that you intended to use to run the mapping. Verify the resources that the mapping used by examining the Running Applications list in the Hadoop Resource Manager web interface. Look for applications that correspond to the namespace that you configured for the Blaze instance.

The following image shows applications with a name that includes the namespace, "testuser1_namespace," that you configured for the Grid Manager:

After completion of the mapping run, the Grid Manager persists. The mapping uses the same Grid Manager whenever it runs with the unique combination of Data Integration Service and connection.

To use multiple connections that use the same Grid Manager, use an identical namespace in each connection to refer to the Blaze instance. Verify that each connection also uses identical values for the Blaze user name and queue name. If you use different values for the Blaze user name and queue name to connect to the same Blaze instance, the mapping fails.