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

Class DriverScheduler

java.lang.Object

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

All Implemented Interfaces:

org.apache.iotdb.commons.service.IService, IDriverScheduler

public class DriverScheduler
extends java.lang.Object
implements IDriverScheduler, org.apache.iotdb.commons.service.IService

the manager of fragment instances scheduling

Method Summary

Modifier and Type	Method	Description
void	abortFragmentInstance(FragmentInstanceId instanceId)	Abort all Drivers of the fragment instance.
void	abortQuery(QueryId queryId)	Abort all the instances in this query.
org.apache.iotdb.commons.service.ServiceType	getID()
static DriverScheduler	getInstance()
double	getSchedulePriority(FragmentInstanceId instanceId)	Return the schedule priority of a fragment.
void	start()
void	stop()
void	submitDrivers(QueryId queryId, java.util.List<IDriver> instances, long timeOut)	Submit one or more IDriver in one query for later scheduling.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.iotdb.commons.service.IService

shutdown, waitAndStop

Method Detail

getInstance

public static DriverScheduler getInstance()

start

public void start()
           throws org.apache.iotdb.commons.exception.StartupException

Specified by:

start in interface org.apache.iotdb.commons.service.IService

Throws:

org.apache.iotdb.commons.exception.StartupException

stop

public void stop()

Specified by:

stop in interface org.apache.iotdb.commons.service.IService

getID

public org.apache.iotdb.commons.service.ServiceType getID()

Specified by:

getID in interface org.apache.iotdb.commons.service.IService

submitDrivers

public void submitDrivers(QueryId queryId,
                          java.util.List<IDriver> instances,
                          long timeOut)

Description copied from interface: IDriverScheduler

Submit one or more IDriver in one query for later scheduling.

Specified by:

submitDrivers in interface IDriverScheduler

Parameters:

queryId - the queryId these instances belong to.

instances - the submitted instances.

timeOut - the query timeout

abortQuery

public void abortQuery(QueryId queryId)

Description copied from interface: IDriverScheduler

Abort all the instances in this query.

Specified by:

abortQuery in interface IDriverScheduler

Parameters:

queryId - the id of the query to be aborted.

abortFragmentInstance

public void abortFragmentInstance(FragmentInstanceId instanceId)

Description copied from interface: IDriverScheduler

Abort all Drivers of the fragment instance. If the instance is not existed, nothing will happen.

Specified by:

abortFragmentInstance in interface IDriverScheduler

Parameters:

instanceId - the id of the fragment instance to be aborted.

getSchedulePriority

public double getSchedulePriority(FragmentInstanceId instanceId)

Description copied from interface: IDriverScheduler

Return the schedule priority of a fragment.

Specified by:

getSchedulePriority in interface IDriverScheduler

Parameters:

instanceId - the fragment instance id.

Returns:

the schedule priority.