@Override
public String toString() {
return String.format(
"Attempt #%d (%s) @ %s - [%s]",
attemptNumber,
vertex.getSimpleName(),
(assignedResource == null ? "(unassigned)" : assignedResource.toString()),
state);
}
public void deployToSlot(final SimpleSlot slot) throws JobException {
// sanity checks
if (slot == null) {
throw new NullPointerException();
}
if (!slot.isAlive()) {
throw new JobException("Target slot for deployment is not alive.");
}
// make sure exactly one deployment call happens from the correct state
// note: the transition from CREATED to DEPLOYING is for testing purposes only
ExecutionState previous = this.state;
if (previous == SCHEDULED || previous == CREATED) {
if (!transitionState(previous, DEPLOYING)) {
// race condition, someone else beat us to the deploying call.
// this should actually not happen and indicates a race somewhere else
throw new IllegalStateException("Cannot deploy task: Concurrent deployment call race.");
}
} else {
// vertex may have been cancelled, or it was already scheduled
throw new IllegalStateException(
"The vertex must be in CREATED or SCHEDULED state to be deployed. Found state "
+ previous);
}
try {
// good, we are allowed to deploy
if (!slot.setExecutedVertex(this)) {
throw new JobException("Could not assign the ExecutionVertex to the slot " + slot);
}
this.assignedResource = slot;
this.assignedResourceLocation = slot.getInstance().getInstanceConnectionInfo();
// race double check, did we fail/cancel and do we need to release the slot?
if (this.state != DEPLOYING) {
slot.releaseSlot();
return;
}
if (LOG.isInfoEnabled()) {
LOG.info(
String.format(
"Deploying %s (attempt #%d) to %s",
vertex.getSimpleName(),
attemptNumber,
slot.getInstance().getInstanceConnectionInfo().getHostname()));
}
final TaskDeploymentDescriptor deployment =
vertex.createDeploymentDescriptor(
attemptId, slot, operatorState, recoveryTimestamp, attemptNumber);
// register this execution at the execution graph, to receive call backs
vertex.getExecutionGraph().registerExecution(this);
final Instance instance = slot.getInstance();
final ActorGateway gateway = instance.getActorGateway();
final Future<Object> deployAction = gateway.ask(new SubmitTask(deployment), timeout);
deployAction.onComplete(
new OnComplete<Object>() {
@Override
public void onComplete(Throwable failure, Object success) throws Throwable {
if (failure != null) {
if (failure instanceof TimeoutException) {
String taskname =
deployment.getTaskInfo().getTaskNameWithSubtasks() + " (" + attemptId + ')';
markFailed(
new Exception(
"Cannot deploy task "
+ taskname
+ " - TaskManager ("
+ instance
+ ") not responding after a timeout of "
+ timeout,
failure));
} else {
markFailed(failure);
}
} else {
if (!(success.equals(Messages.getAcknowledge()))) {
markFailed(
new Exception(
"Failed to deploy the task to slot "
+ slot
+ ": Response was not of type Acknowledge"));
}
}
}
},
executionContext);
} catch (Throwable t) {
markFailed(t);
ExceptionUtils.rethrow(t);
}
}
public String getVertexWithAttempt() {
return vertex.getSimpleName() + " - execution #" + attemptNumber;
}
