Running Callable Objects on Bootstrapped Instances

Like with running asadmin commands, there are two methods available for running Callable objects, both also named run.

The two methods also work in a similar way to the two asadmin run methods:

run(Callable<T> callable)

runs the specified Callable on all instances in a runtime’s cluster.


members, Callable<T> callable)` runs the Callable on a subset of the instances in a runtime’s cluster.

Both methods return a Map object with a key/value type of <InstanceDescriptor, Future<T>>, where the type variable T is Serializable.