Package io.trino.execution

Class StageStateMachine

java.lang.Object

io.trino.execution.StageStateMachine

@ThreadSafe
public class StageStateMachine
extends Object

Constructor Summary

Constructors

Constructor	Description
StageStateMachine(StageId stageId, PlanFragment fragment, Map<PlanNodeId,TableInfo> tables, Executor executor, io.opentelemetry.api.trace.Tracer tracer, io.opentelemetry.api.trace.Span querySpan, SplitSchedulerStats schedulerStats)

Method Summary

Modifier and Type	Method	Description
void	addFinalStageInfoListener(StateMachine.StateChangeListener<StageInfo> finalStatusListener)	Add a listener for the final stage info.
void	addStateChangeListener(StateMachine.StateChangeListener<StageState> stateChangeListener)	Listener is always notified asynchronously using a dedicated notification thread pool so, care should be taken to avoid leaking this when adding a listener in a constructor.
BasicStageStats	getBasicStageStats(Supplier<Iterable<TaskInfo>> taskInfosSupplier)
PlanFragment	getFragment()
StageId	getStageId()
StageInfo	getStageInfo(Supplier<Iterable<TaskInfo>> taskInfosSupplier)
io.opentelemetry.api.trace.Span	getStageSpan()
StageState	getState()
long	getTotalMemoryReservation()
long	getUserMemoryReservation()
void	recordGetSplitTime(long startNanos)
void	setAllTasksFinal(Iterable<TaskInfo> finalTaskInfos)
String	toString()
boolean	transitionToAborted()
boolean	transitionToFailed(Throwable throwable)
boolean	transitionToFinished()
boolean	transitionToPending()
boolean	transitionToRunning()
boolean	transitionToScheduling()
void	updateMemoryUsage(long deltaUserMemoryInBytes, long deltaRevocableMemoryInBytes, long deltaTotalMemoryInBytes)

Methods inherited from class java.lang.Object

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

Constructor Details

StageStateMachine

public StageStateMachine(StageId stageId,
 PlanFragment fragment,
 Map<PlanNodeId,TableInfo> tables,
 Executor executor,
 io.opentelemetry.api.trace.Tracer tracer,
 io.opentelemetry.api.trace.Span querySpan,
 SplitSchedulerStats schedulerStats)

Method Details

getStageId

public StageId getStageId()

getState

public StageState getState()

getFragment

public PlanFragment getFragment()

getStageSpan

public io.opentelemetry.api.trace.Span getStageSpan()

addStateChangeListener

public void addStateChangeListener(StateMachine.StateChangeListener<StageState> stateChangeListener)

Listener is always notified asynchronously using a dedicated notification thread pool so, care should be taken to avoid leaking this when adding a listener in a constructor. Additionally, it is possible notifications are observed out of order due to the asynchronous execution.

transitionToScheduling

public boolean transitionToScheduling()

transitionToRunning

public boolean transitionToRunning()

transitionToPending

public boolean transitionToPending()

transitionToFinished

public boolean transitionToFinished()

transitionToAborted

public boolean transitionToAborted()

transitionToFailed

public boolean transitionToFailed(Throwable throwable)

addFinalStageInfoListener

public void addFinalStageInfoListener(StateMachine.StateChangeListener<StageInfo> finalStatusListener)

Add a listener for the final stage info. This notification is guaranteed to be fired only once. Listener is always notified asynchronously using a dedicated notification thread pool so, care should be taken to avoid leaking this when adding a listener in a constructor. Additionally, it is possible notifications are observed out of order due to the asynchronous execution.

setAllTasksFinal

public void setAllTasksFinal(Iterable<TaskInfo> finalTaskInfos)

getUserMemoryReservation

public long getUserMemoryReservation()

getTotalMemoryReservation

public long getTotalMemoryReservation()

updateMemoryUsage

public void updateMemoryUsage(long deltaUserMemoryInBytes,
 long deltaRevocableMemoryInBytes,
 long deltaTotalMemoryInBytes)

getBasicStageStats

public BasicStageStats getBasicStageStats(Supplier<Iterable<TaskInfo>> taskInfosSupplier)

getStageInfo

public StageInfo getStageInfo(Supplier<Iterable<TaskInfo>> taskInfosSupplier)

recordGetSplitTime

public void recordGetSplitTime(long startNanos)

toString

public String toString()

Overrides:

toString in class Object