Package org.apache.iotdb.db.mpp.execution.schedule

Interface ITaskScheduler

public interface ITaskScheduler

the scheduler interface of DriverTask

Method Summary

Modifier and Type	Method	Description
void	blockedToReady(DriverTask task)	Switch a task from DriverTaskStatus.BLOCKED to DriverTaskStatus.READY.
boolean	readyToRunning(DriverTask task)	Switch a task from DriverTaskStatus.READY to DriverTaskStatus.RUNNING.
void	runningToBlocked(DriverTask task, ExecutionContext context)	Switch a task from DriverTaskStatus.RUNNING to DriverTaskStatus.BLOCKED.
void	runningToFinished(DriverTask task, ExecutionContext context)	Switch a task from DriverTaskStatus.RUNNING to DriverTaskStatus.FINISHED.
void	runningToReady(DriverTask task, ExecutionContext context)	Switch a task from DriverTaskStatus.RUNNING to DriverTaskStatus.READY.
void	toAborted(DriverTask task)	Switch a task to DriverTaskStatus.ABORTED.

Method Detail

blockedToReady

void blockedToReady(DriverTask task)

Switch a task from DriverTaskStatus.BLOCKED to DriverTaskStatus.READY.

Parameters:

task - the task to be switched.

readyToRunning

boolean readyToRunning(DriverTask task)

Switch a task from DriverTaskStatus.READY to DriverTaskStatus.RUNNING.

Parameters:

task - the task to be switched.

Returns:

true if it's switched to the target status successfully, otherwise false.

runningToReady

void runningToReady(DriverTask task,
                    ExecutionContext context)

Switch a task from DriverTaskStatus.RUNNING to DriverTaskStatus.READY.

Parameters:

task - the task to be switched.

context - the execution context of last running.

runningToBlocked

void runningToBlocked(DriverTask task,
                      ExecutionContext context)

Switch a task from DriverTaskStatus.RUNNING to DriverTaskStatus.BLOCKED.

Parameters:

task - the task to be switched.

context - the execution context of last running.

runningToFinished

void runningToFinished(DriverTask task,
                       ExecutionContext context)

Switch a task from DriverTaskStatus.RUNNING to DriverTaskStatus.FINISHED.

Parameters:

task - the task to be switched.

context - the execution context of last running.

toAborted

void toAborted(DriverTask task)

Switch a task to DriverTaskStatus.ABORTED.

Parameters:

task - the task to be switched.