@Override
public void handle(ContainerEvent event) {
try {
this.writeLock.lock();
ContainerId containerID = event.getContainerID();
LOG.debug("Processing " + containerID + " of type " + event.getType());
ContainerState oldState = stateMachine.getCurrentState();
ContainerState newState = null;
try {
newState = stateMachine.doTransition(event.getType(), event);
} catch (InvalidStateTransitonException e) {
LOG.warn(
"Can't handle this event at current state: Current: ["
+ oldState
+ "], eventType: ["
+ event.getType()
+ "]",
e);
}
if (oldState != newState) {
LOG.info("Container " + containerID + " transitioned from " + oldState + " to " + newState);
}
} finally {
this.writeLock.unlock();
}
}
@Override
public void handle(TaskEvent event) {
if (LOG.isDebugEnabled()) {
LOG.debug(
"Processing TaskEvent "
+ event.getTaskID()
+ " of type "
+ event.getType()
+ " while in state "
+ getInternalState()
+ ". Event: "
+ event);
}
try {
writeLock.lock();
TaskStateInternal oldState = getInternalState();
try {
stateMachine.doTransition(event.getType(), event);
} catch (InvalidStateTransitonException e) {
LOG.error("Can't handle this event at current state for " + this.taskId, e);
internalError(event.getType());
}
if (oldState != getInternalState()) {
LOG.info(taskId + " Task Transitioned from " + oldState + " to " + getInternalState());
}
} finally {
writeLock.unlock();
}
}
public QueryState getState() {
readLock.lock();
try {
return stateMachine.getCurrentState();
} finally {
readLock.unlock();
}
}
@Override
public ContainerState getContainerState() {
this.readLock.lock();
try {
return stateMachine.getCurrentState();
} finally {
this.readLock.unlock();
}
}
@VisibleForTesting
public TaskStateInternal getInternalState() {
readLock.lock();
try {
return stateMachine.getCurrentState();
} finally {
readLock.unlock();
}
}
public org.apache.hadoop.yarn.api.records.ContainerState getCurrentState() {
switch (stateMachine.getCurrentState()) {
case NEW:
case LOCALIZING:
case LOCALIZATION_FAILED:
case LOCALIZED:
case RUNNING:
case EXITED_WITH_SUCCESS:
case EXITED_WITH_FAILURE:
case KILLING:
case CONTAINER_CLEANEDUP_AFTER_KILL:
case CONTAINER_RESOURCES_CLEANINGUP:
return org.apache.hadoop.yarn.api.records.ContainerState.RUNNING;
case DONE:
default:
return org.apache.hadoop.yarn.api.records.ContainerState.COMPLETE;
}
}