io.druid.indexing.worker

Class WorkerTaskMonitor

java.lang.Object

io.druid.indexing.worker.WorkerTaskMonitor

public class WorkerTaskMonitor
extends Object

The monitor watches ZK at a specified path for new tasks to appear. Upon starting the monitor, a listener will be created that waits for new tasks. Tasks are executed as soon as they are seen.

Constructor Summary

Constructors

Constructor and Description
WorkerTaskMonitor(com.fasterxml.jackson.databind.ObjectMapper jsonMapper, org.apache.curator.framework.CuratorFramework cf, WorkerCuratorCoordinator workerCuratorCoordinator, TaskRunner taskRunner)

Method Summary

Modifier and Type	Method and Description
void	start() Register a monitor for new tasks.
void	stop()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

WorkerTaskMonitor

@Inject
public WorkerTaskMonitor(com.fasterxml.jackson.databind.ObjectMapper jsonMapper,
                                 org.apache.curator.framework.CuratorFramework cf,
                                 WorkerCuratorCoordinator workerCuratorCoordinator,
                                 TaskRunner taskRunner)

Method Detail

start

public void start()
           throws Exception

Register a monitor for new tasks. When new tasks appear, the worker node announces a status to indicate it has started the task. When the task is complete, the worker node updates the status.

Throws:

Exception

stop

public void stop()
          throws InterruptedException

Throws:

InterruptedException