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

Class DriverTask

java.lang.Object

org.apache.iotdb.db.mpp.execution.schedule.task.DriverTask

All Implemented Interfaces:

IDIndexedAccessible

public class DriverTask
extends java.lang.Object
implements IDIndexedAccessible

the scheduling element of DriverTaskThread. It wraps a single Driver.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DriverTask.SchedulePriorityComparator	a comparator of ddl, the higher the schedulePriority is, the low order it has.
static class	DriverTask.TimeoutComparator	a comparator of ddl, the less the ddl is, the low order it has.

Constructor Summary

Constructors

Constructor	Description
DriverTask()	Initialize a dummy instance for queryHolder
DriverTask(IDriver instance, long timeoutMs, DriverTaskStatus status)

Method Summary

Modifier and Type	Method	Description
boolean	equals(java.lang.Object o)
java.lang.String	getAbortCause()
long	getDDL()
IDriver	getFragmentInstance()
DriverTaskID	getId()
double	getSchedulePriority()
DriverTaskStatus	getStatus()
int	hashCode()
boolean	isEndState()
void	lock()
void	setAbortCause(java.lang.String abortCause)
void	setId(ID id)
void	setStatus(DriverTaskStatus status)
void	unlock()
void	updateSchedulePriority(ExecutionContext context)	Update the schedule priority according to the execution context.

Methods inherited from class java.lang.Object

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

Constructor Detail

DriverTask

public DriverTask()

Initialize a dummy instance for queryHolder

DriverTask

public DriverTask(IDriver instance,
                  long timeoutMs,
                  DriverTaskStatus status)

Method Detail

getId

public DriverTaskID getId()

Specified by:

getId in interface IDIndexedAccessible

setId

public void setId(ID id)

Specified by:

setId in interface IDIndexedAccessible

getStatus

public DriverTaskStatus getStatus()

isEndState

public boolean isEndState()

getFragmentInstance

public IDriver getFragmentInstance()

setStatus

public void setStatus(DriverTaskStatus status)

updateSchedulePriority

public void updateSchedulePriority(ExecutionContext context)

Update the schedule priority according to the execution context.

Parameters:

context - the last execution context.

lock

public void lock()

unlock

public void unlock()

getSchedulePriority

public double getSchedulePriority()

getDDL

public long getDDL()

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

getAbortCause

public java.lang.String getAbortCause()

setAbortCause

public void setAbortCause(java.lang.String abortCause)