Uses of Class
org.apache.reef.annotations.Optional

Packages that use Optional

Package	Description
org.apache.reef.driver	Driver APIs for REEF in terms of Rx.
org.apache.reef.driver.client	Representations of the Client (i.e.
org.apache.reef.evaluator.context	Evaluator Contexts.

Uses of Optional in org.apache.reef.driver

Classes in org.apache.reef.driver with annotations of type Optional

Modifier and Type	Interface and Description
interface	PreemptionHandler This EventHandler will receive preemption events from the underlying resourcemanager.

Uses of Optional in org.apache.reef.driver.client

Classes in org.apache.reef.driver.client with annotations of type Optional

Modifier and Type	Interface and Description
interface	JobMessageObserver The driver uses this interface to communicate with the job client.

Uses of Optional in org.apache.reef.evaluator.context

Classes in org.apache.reef.evaluator.context with annotations of type Optional

Modifier and Type	Interface and Description
interface	ContextMessageHandler Implement this interface to receive messages from the driver in a context.