Package io.trino.execution

Class TaskStateMachine

java.lang.Object

io.trino.execution.TaskStateMachine

@ThreadSafe
public class TaskStateMachine
extends Object

Constructor Summary

Constructors

Constructor	Description
TaskStateMachine(TaskId taskId, Executor executor)

Method Summary

Modifier and Type	Method	Description
void	abort()
void	addSourceTaskFailureListener(TaskFailureListener listener)
void	addStateChangeListener(StateMachine.StateChangeListener<TaskState> stateChangeListener)	Listener is always notified asynchronously using a dedicated notification thread pool so, care should be taken to avoid leaking this when adding a listener in a constructor.
void	cancel()
void	failed(Throwable cause)
void	finished()
org.joda.time.DateTime	getCreatedTime()
LinkedBlockingQueue<Throwable>	getFailureCauses()
TaskState	getState()
com.google.common.util.concurrent.ListenableFuture<TaskState>	getStateChange(TaskState currentState)
TaskId	getTaskId()
void	sourceTaskFailed(TaskId taskId, Throwable failure)
void	terminationComplete()
String	toString()
void	transitionToFlushing()

Methods inherited from class java.lang.Object

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

Constructor Details

TaskStateMachine

public TaskStateMachine(TaskId taskId,
 Executor executor)

Method Details

getCreatedTime

public org.joda.time.DateTime getCreatedTime()

getTaskId

public TaskId getTaskId()

getState

public TaskState getState()

getStateChange

public com.google.common.util.concurrent.ListenableFuture<TaskState> getStateChange(TaskState currentState)

getFailureCauses

public LinkedBlockingQueue<Throwable> getFailureCauses()

transitionToFlushing

public void transitionToFlushing()

finished

public void finished()

cancel

public void cancel()

abort

public void abort()

failed

public void failed(Throwable cause)

terminationComplete

public void terminationComplete()

addStateChangeListener

public void addStateChangeListener(StateMachine.StateChangeListener<TaskState> stateChangeListener)

Listener is always notified asynchronously using a dedicated notification thread pool so, care should be taken to avoid leaking this when adding a listener in a constructor. Additionally, it is possible notifications are observed out of order due to the asynchronous execution.

addSourceTaskFailureListener

public void addSourceTaskFailureListener(TaskFailureListener listener)

sourceTaskFailed

public void sourceTaskFailed(TaskId taskId,
 Throwable failure)

toString

public String toString()

Overrides:

toString in class Object