The collection of access methods that can be used to retrieve statistical information about the data processed in a job.
The optimizer that takes the user specified program plan and creates an optimized plan that contains exact descriptions about how the physical execution will take place.
An exception that is thrown by the Optimizer when encountering an illegal condition.
An exception that is thrown by the Optimizer when encountering a problem during the optimizer post pass.
Copyright © 2014–2019 The Apache Software Foundation. All rights reserved.