io.prestosql.execution.executor

Class PrioritizedSplitRunner

java.lang.Object

io.prestosql.execution.executor.PrioritizedSplitRunner

All Implemented Interfaces:

Comparable<PrioritizedSplitRunner>

public class PrioritizedSplitRunner
extends Object
implements Comparable<PrioritizedSplitRunner>

Field Summary

Fields

Modifier and Type	Field and Description
protected AtomicLong	lastRun
protected AtomicReference<Priority>	priority
static io.airlift.units.Duration	SPLIT_RUN_QUANTA

Method Summary

Modifier and Type	Method and Description
int	compareTo(PrioritizedSplitRunner o)
void	destroy()
long	getCpuTimeNanos()
long	getCreatedNanos()
com.google.common.util.concurrent.ListenableFuture<?>	getFinishedFuture()
String	getInfo()
Priority	getPriority()
long	getScheduledNanos()
int	getSplitId()
TaskHandle	getTaskHandle()
long	getWaitNanos()
boolean	isDestroyed()
boolean	isFinished()
com.google.common.util.concurrent.ListenableFuture<?>	process()
void	resetLevelPriority() Updates the task level priority to be greater than or equal to the minimum priority within that level.
void	setReady()
String	toString()
boolean	updateLevelPriority() Updates the (potentially stale) priority value cached in this object.

Methods inherited from class java.lang.Object

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

Field Detail

SPLIT_RUN_QUANTA

public static final io.airlift.units.Duration SPLIT_RUN_QUANTA

priority

protected final AtomicReference<Priority> priority

lastRun

protected final AtomicLong lastRun

Method Detail

getTaskHandle

public TaskHandle getTaskHandle()

getFinishedFuture

public com.google.common.util.concurrent.ListenableFuture<?> getFinishedFuture()

isDestroyed

public boolean isDestroyed()

destroy

public void destroy()

getCreatedNanos

public long getCreatedNanos()

isFinished

public boolean isFinished()

getScheduledNanos

public long getScheduledNanos()

getCpuTimeNanos

public long getCpuTimeNanos()

getWaitNanos

public long getWaitNanos()

process

public com.google.common.util.concurrent.ListenableFuture<?> process()

setReady

public void setReady()

updateLevelPriority

public boolean updateLevelPriority()

Updates the (potentially stale) priority value cached in this object. This should be called when this object is outside the queue.

Returns:

true if the level changed.

resetLevelPriority

public void resetLevelPriority()

Updates the task level priority to be greater than or equal to the minimum priority within that level. This ensures that tasks that spend time blocked do not return and starve already-running tasks. Also updates the cached priority object.

compareTo

public int compareTo(PrioritizedSplitRunner o)

Specified by:

compareTo in interface Comparable<PrioritizedSplitRunner>

getSplitId

public int getSplitId()

getPriority

public Priority getPriority()

getInfo

public String getInfo()

toString

public String toString()

Overrides:

toString in class Object