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

Interface IDriverScheduler

All Known Implementing Classes:

DriverScheduler

public interface IDriverScheduler

the interface of fragment instance 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.
double	getSchedulePriority(FragmentInstanceId instanceId)	Return the schedule priority of a fragment.
void	submitDrivers(QueryId queryId, java.util.List<IDriver> instances, long timeOut)	Submit one or more IDriver in one query for later scheduling.

Method Detail

submitDrivers

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

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

Parameters:

queryId - the queryId these instances belong to.

instances - the submitted instances.

timeOut - the query timeout

abortQuery

void abortQuery(QueryId queryId)

Abort all the instances in this query.

Parameters:

queryId - the id of the query to be aborted.

abortFragmentInstance

void abortFragmentInstance(FragmentInstanceId instanceId)

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

Parameters:

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

getSchedulePriority

double getSchedulePriority(FragmentInstanceId instanceId)

Return the schedule priority of a fragment.

Parameters:

instanceId - the fragment instance id.

Returns:

the schedule priority.

Throws:

java.lang.IllegalStateException - if the instance has already been cleared.