Package org.apache.hadoop.mapreduce.task.annotation

Annotation Interface Checkpointable

@Documented
@Target(TYPE)
@Retention(RUNTIME)
@Public
@Evolving
public @interface Checkpointable

Contract representing to the framework that the task can be safely preempted and restarted between invocations of the user-defined function. This is often true when the result of a function does not rely on state derived from previous elements in the record stream, but the guarantee is left as an exercise to the implementor.