org.apache.tez.dag.app.dag.impl

Class VertexImpl

java.lang.Object

org.apache.tez.dag.app.dag.impl.VertexImpl

All Implemented Interfaces:

Comparable<Vertex>, org.apache.hadoop.yarn.event.EventHandler<VertexEvent>, Vertex

public class VertexImpl
extends Object
implements Vertex, org.apache.hadoop.yarn.event.EventHandler<VertexEvent>

Implementation of Vertex interface. Maintains the state machines of Vertex. The read and write calls use ReadWriteLock for concurrency.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	VertexImpl.InitTransition
static class	VertexImpl.InputDataInformationTransition
static class	VertexImpl.NoOpVertexManager This is for recovery when VertexReconfigureDoneEvent is seen.
static class	VertexImpl.NullEdgeInitializedTransition
static class	VertexImpl.RecoverTransition
static class	VertexImpl.RootInputInitializedTransition
static class	VertexImpl.SourceVertexStartedTransition
static class	VertexImpl.StartTransition
static class	VertexImpl.StartWhileInitializingTransition
static class	VertexImpl.VertexInitializedTransition

Nested classes/interfaces inherited from interface org.apache.tez.dag.app.dag.Vertex

Vertex.VertexConfig

Field Summary

Fields

Modifier and Type	Field and Description
protected StateChangeNotifier	stateChangeNotifier
protected static org.apache.hadoop.yarn.state.StateMachineFactory<VertexImpl,VertexState,VertexEventType,VertexEvent>	stateMachineFactory

Constructor Summary

Constructors

Constructor and Description

VertexImpl(org.apache.tez.dag.records.TezVertexID vertexId, org.apache.tez.dag.api.records.DAGProtos.VertexPlan vertexPlan, String vertexName, org.apache.hadoop.conf.Configuration dagConf, org.apache.hadoop.yarn.event.EventHandler eventHandler, TaskCommunicatorManagerInterface taskCommunicatorManagerInterface, org.apache.hadoop.yarn.util.Clock clock, TaskHeartbeatHandler thh, boolean commitVertexOutputs, AppContext appContext, org.apache.tez.dag.api.VertexLocationHint vertexLocationHint, Map<String,org.apache.tez.dag.app.dag.impl.DAGImpl.VertexGroupInfo> dagVertexGroups, TaskSpecificLaunchCmdOption taskSpecificLaunchCmdOption, StateChangeNotifier entityStatusTracker, org.apache.hadoop.conf.Configuration dagOnlyConf)

Method Summary

Modifier and Type	Method and Description
void	addCounters(org.apache.tez.common.counters.TezCounters tezCounters) Add custom counters to the vertex
void	addSharedOutputs(Set<String> outputs)
protected void	addTask(Task task)
int	compareTo(Vertex other)
void	constructFinalFullcounters()
protected RootInputInitializerManager	createRootInputInitializerManager(String dagName, String vertexName, org.apache.tez.dag.records.TezVertexID vertexID, org.apache.hadoop.yarn.event.EventHandler eventHandler, int numTasks, int numNodes, org.apache.hadoop.yarn.api.records.Resource vertexTaskResource, org.apache.hadoop.yarn.api.records.Resource totalResource)
void	doneReconfiguringVertex()
boolean	equals(Object obj)
Map<String,org.apache.tez.dag.api.RootInputLeafOutput<org.apache.tez.dag.api.InputDescriptor,org.apache.tez.dag.api.InputInitializerDescriptor>>	getAdditionalInputs()
Map<String,org.apache.tez.dag.api.RootInputLeafOutput<org.apache.tez.dag.api.OutputDescriptor,org.apache.tez.dag.api.OutputCommitterDescriptor>>	getAdditionalOutputs()
org.apache.tez.common.counters.TezCounters	getAllCounters() Get all the counters of this vertex.
AppContext	getAppContext()
org.apache.tez.common.counters.TezCounters	getCachedCounters() Get all the counters of this vertex.
float	getCompletedTaskProgress()
int	getCompletedTasks()
org.apache.hadoop.conf.Configuration	getConf()
int	getContainerLauncherIdentifier()
DAG	getDAG()
List<String>	getDiagnostics()
int	getDistanceFromRoot()
int	getFailedTaskAttemptCount()
long	getFinishTime()
long	getFirstTaskStartTime()
List<org.apache.tez.runtime.api.impl.GroupInputSpec>	getGroupInputSpecList()
long	getInitTime()
List<org.apache.tez.runtime.api.impl.InputSpec>	getInputSpecList(int taskIndex)
Map<Vertex,Edge>	getInputVertices()
int	getInputVerticesCount()
LinkedHashMap<String,Integer>	getIOIndices()
int	getKilledTaskAttemptCount()
long	getLastTaskFinishTime()
String	getLogIdentifier()
int	getMaxTaskConcurrency()
String	getName()
org.apache.tez.runtime.api.OutputCommitter	getOutputCommitter(String outputName)
Map<String,org.apache.tez.runtime.api.OutputCommitter>	getOutputCommitters()
List<org.apache.tez.runtime.api.impl.OutputSpec>	getOutputSpecList(int taskIndex)
Map<Vertex,Edge>	getOutputVertices()
int	getOutputVerticesCount()
org.apache.tez.dag.api.ProcessorDescriptor	getProcessorDescriptor()
float	getProgress()
int	getRejectedTaskAttemptCount()
int	getRunningTasks()
ServicePluginInfo	getServicePluginInfo()
Set<String>	getSharedOutputs()
LegacySpeculator	getSpeculator()
long	getStartTime()
VertexState	getState()
protected org.apache.hadoop.yarn.state.StateMachine<VertexState,VertexEventType,VertexEvent>	getStateMachine()
org.apache.tez.runtime.api.VertexStatistics	getStatistics()
int	getSucceededTasks()
Task	getTask(int taskIndex)
Task	getTask(org.apache.tez.dag.records.TezTaskID taskID)
TaskAttemptEventInfo	getTaskAttemptTezEvents(org.apache.tez.dag.records.TezTaskAttemptID attemptID, int fromEventId, int preRoutedFromEventId, int maxEvents)
int	getTaskCommunicatorIdentifier()
org.apache.tez.dag.api.TaskLocationHint	getTaskLocationHint(org.apache.tez.dag.records.TezTaskID taskId)
org.apache.hadoop.yarn.api.records.Resource	getTaskResource()
Map<org.apache.tez.dag.records.TezTaskID,Task>	getTasks()
int	getTaskSchedulerIdentifier()
VertexTerminationCause	getTerminationCause()
int	getTotalTasks()
Vertex.VertexConfig	getVertexConfig()
org.apache.tez.dag.records.TezVertexID	getVertexId()
org.apache.tez.dag.api.records.DAGProtos.VertexPlan	getVertexPlan()
ProgressBuilder	getVertexProgress()
VertexStats	getVertexStats()
VertexStatusBuilder	getVertexStatus(Set<org.apache.tez.dag.api.client.StatusGetOpts> statusOptions)
void	handle(VertexEvent event)
void	handleSpeculatorEvent(SpeculatorEvent event)
int	hashCode()
void	incrementFailedTaskAttemptCount()
void	incrementKilledTaskAttemptCount()
void	incrementRejectedTaskAttemptCount()
static org.apache.tez.common.counters.TezCounters	incrTaskCounters(org.apache.tez.common.counters.TezCounters counters, Collection<Task> tasks)
boolean	isSpeculationEnabled()
void	reconfigureVertex(int parallelism, org.apache.tez.dag.api.VertexLocationHint locationHint, Map<String,org.apache.tez.dag.api.EdgeProperty> sourceEdgeProperties)
void	reconfigureVertex(int parallelism, org.apache.tez.dag.api.VertexLocationHint locationHint, Map<String,org.apache.tez.dag.api.EdgeProperty> sourceEdgeProperties, Map<String,org.apache.tez.runtime.api.InputSpecUpdate> rootInputSpecUpdate)
void	reconfigureVertex(Map<String,org.apache.tez.runtime.api.InputSpecUpdate> rootInputSpecUpdate, int parallelism, org.apache.tez.dag.api.VertexLocationHint locationHint)
void	reportTaskStartTime(long taskStartTime)
void	scheduleSpeculativeTask(org.apache.tez.dag.records.TezTaskID taskId)
void	scheduleTasks(List<org.apache.tez.dag.api.VertexManagerPluginContext.ScheduleTaskRequest> tasksToSchedule)
void	setAdditionalInputs(List<org.apache.tez.dag.api.records.DAGProtos.RootInputLeafOutputProto> inputs)
void	setAdditionalOutputs(List<org.apache.tez.dag.api.records.DAGProtos.RootInputLeafOutputProto> outputs)
void	setInputVertices(Map<Vertex,Edge> inVertices)
void	setOutputVertices(Map<Vertex,Edge> outVertices)
void	setParallelism(int parallelism, org.apache.tez.dag.api.VertexLocationHint vertexLocationHint, Map<String,org.apache.tez.dag.api.EdgeManagerPluginDescriptor> sourceEdgeManagers, Map<String,org.apache.tez.runtime.api.InputSpecUpdate> rootInputSpecUpdates, boolean fromVertexManager)
void	setVertexLocationHint(org.apache.tez.dag.api.VertexLocationHint vertexLocationHint)
static VertexStats	updateVertexStats(VertexStats stats, Collection<Task> tasks)
void	vertexReconfigurationPlanned()

Methods inherited from class java.lang.Object

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

Field Detail

stateChangeNotifier

protected final StateChangeNotifier stateChangeNotifier

stateMachineFactory

protected static final org.apache.hadoop.yarn.state.StateMachineFactory<VertexImpl,VertexState,VertexEventType,VertexEvent> stateMachineFactory

Constructor Detail

VertexImpl

public VertexImpl(org.apache.tez.dag.records.TezVertexID vertexId,
                  org.apache.tez.dag.api.records.DAGProtos.VertexPlan vertexPlan,
                  String vertexName,
                  org.apache.hadoop.conf.Configuration dagConf,
                  org.apache.hadoop.yarn.event.EventHandler eventHandler,
                  TaskCommunicatorManagerInterface taskCommunicatorManagerInterface,
                  org.apache.hadoop.yarn.util.Clock clock,
                  TaskHeartbeatHandler thh,
                  boolean commitVertexOutputs,
                  AppContext appContext,
                  org.apache.tez.dag.api.VertexLocationHint vertexLocationHint,
                  Map<String,org.apache.tez.dag.app.dag.impl.DAGImpl.VertexGroupInfo> dagVertexGroups,
                  TaskSpecificLaunchCmdOption taskSpecificLaunchCmdOption,
                  StateChangeNotifier entityStatusTracker,
                  org.apache.hadoop.conf.Configuration dagOnlyConf)

Method Detail

getConf

public org.apache.hadoop.conf.Configuration getConf()

Specified by:

getConf in interface Vertex

getTaskSchedulerIdentifier

public int getTaskSchedulerIdentifier()

Specified by:

getTaskSchedulerIdentifier in interface Vertex

getContainerLauncherIdentifier

public int getContainerLauncherIdentifier()

Specified by:

getContainerLauncherIdentifier in interface Vertex

getTaskCommunicatorIdentifier

public int getTaskCommunicatorIdentifier()

Specified by:

getTaskCommunicatorIdentifier in interface Vertex

getServicePluginInfo

public ServicePluginInfo getServicePluginInfo()

Specified by:

getServicePluginInfo in interface Vertex

isSpeculationEnabled

public boolean isSpeculationEnabled()

Specified by:

isSpeculationEnabled in interface Vertex

getStateMachine

protected org.apache.hadoop.yarn.state.StateMachine<VertexState,VertexEventType,VertexEvent> getStateMachine()

getVertexId

public org.apache.tez.dag.records.TezVertexID getVertexId()

Specified by:

getVertexId in interface Vertex

getVertexPlan

public org.apache.tez.dag.api.records.DAGProtos.VertexPlan getVertexPlan()

Specified by:

getVertexPlan in interface Vertex

getDistanceFromRoot

public int getDistanceFromRoot()

Specified by:

getDistanceFromRoot in interface Vertex

getIOIndices

public LinkedHashMap<String,Integer> getIOIndices()

Specified by:

getIOIndices in interface Vertex

getName

public String getName()

Specified by:

getName in interface Vertex

getTask

public Task getTask(org.apache.tez.dag.records.TezTaskID taskID)

Specified by:

getTask in interface Vertex

getTask

public Task getTask(int taskIndex)

Specified by:

getTask in interface Vertex

getTotalTasks

public int getTotalTasks()

Specified by:

getTotalTasks in interface Vertex

getCompletedTasks

public int getCompletedTasks()

Specified by:

getCompletedTasks in interface Vertex

getSucceededTasks

public int getSucceededTasks()

Specified by:

getSucceededTasks in interface Vertex

getRunningTasks

public int getRunningTasks()

Specified by:

getRunningTasks in interface Vertex

getAllCounters

public org.apache.tez.common.counters.TezCounters getAllCounters()

Description copied from interface: Vertex

Get all the counters of this vertex.

Specified by:

getAllCounters in interface Vertex

Returns:

aggregate task-counters

getCachedCounters

public org.apache.tez.common.counters.TezCounters getCachedCounters()

Description copied from interface: Vertex

Get all the counters of this vertex.

Specified by:

getCachedCounters in interface Vertex

Returns:

aggregate task-counters

addCounters

public void addCounters(org.apache.tez.common.counters.TezCounters tezCounters)

Description copied from interface: Vertex

Add custom counters to the vertex

Specified by:

addCounters in interface Vertex

Parameters:

tezCounters - counters to add

getMaxTaskConcurrency

public int getMaxTaskConcurrency()

Specified by:

getMaxTaskConcurrency in interface Vertex

getVertexStats

public VertexStats getVertexStats()

getInitTime

public long getInitTime()

Specified by:

getInitTime in interface Vertex

getStartTime

public long getStartTime()

Specified by:

getStartTime in interface Vertex

getFinishTime

public long getFinishTime()

Specified by:

getFinishTime in interface Vertex

reportTaskStartTime

public void reportTaskStartTime(long taskStartTime)

Specified by:

reportTaskStartTime in interface Vertex

getFirstTaskStartTime

public long getFirstTaskStartTime()

Specified by:

getFirstTaskStartTime in interface Vertex

getLastTaskFinishTime

public long getLastTaskFinishTime()

Specified by:

getLastTaskFinishTime in interface Vertex

getVertexConfig

public Vertex.VertexConfig getVertexConfig()

Specified by:

getVertexConfig in interface Vertex

incrTaskCounters

public static org.apache.tez.common.counters.TezCounters incrTaskCounters(org.apache.tez.common.counters.TezCounters counters,
                                                                          Collection<Task> tasks)

updateVertexStats

public static VertexStats updateVertexStats(VertexStats stats,
                                            Collection<Task> tasks)

getDiagnostics

public List<String> getDiagnostics()

Specified by:

getDiagnostics in interface Vertex

getProgress

public float getProgress()

Specified by:

getProgress in interface Vertex

getCompletedTaskProgress

public float getCompletedTaskProgress()

Specified by:

getCompletedTaskProgress in interface Vertex

getVertexProgress

public ProgressBuilder getVertexProgress()

Specified by:

getVertexProgress in interface Vertex

getVertexStatus

public VertexStatusBuilder getVertexStatus(Set<org.apache.tez.dag.api.client.StatusGetOpts> statusOptions)

Specified by:

getVertexStatus in interface Vertex

getTaskLocationHint

public org.apache.tez.dag.api.TaskLocationHint getTaskLocationHint(org.apache.tez.dag.records.TezTaskID taskId)

Specified by:

getTaskLocationHint in interface Vertex

getTasks

public Map<org.apache.tez.dag.records.TezTaskID,Task> getTasks()

Specified by:

getTasks in interface Vertex

getState

public VertexState getState()

Specified by:

getState in interface Vertex

getTerminationCause

public VertexTerminationCause getTerminationCause()

Specified by:

getTerminationCause in interface Vertex

getAppContext

public AppContext getAppContext()

Specified by:

getAppContext in interface Vertex

getLogIdentifier

public String getLogIdentifier()

Specified by:

getLogIdentifier in interface Vertex

incrementFailedTaskAttemptCount

public void incrementFailedTaskAttemptCount()

Specified by:

incrementFailedTaskAttemptCount in interface Vertex

incrementKilledTaskAttemptCount

public void incrementKilledTaskAttemptCount()

Specified by:

incrementKilledTaskAttemptCount in interface Vertex

incrementRejectedTaskAttemptCount

public void incrementRejectedTaskAttemptCount()

Specified by:

incrementRejectedTaskAttemptCount in interface Vertex

getFailedTaskAttemptCount

public int getFailedTaskAttemptCount()

Specified by:

getFailedTaskAttemptCount in interface Vertex

getKilledTaskAttemptCount

public int getKilledTaskAttemptCount()

Specified by:

getKilledTaskAttemptCount in interface Vertex

getRejectedTaskAttemptCount

public int getRejectedTaskAttemptCount()

Specified by:

getRejectedTaskAttemptCount in interface Vertex

scheduleSpeculativeTask

public void scheduleSpeculativeTask(org.apache.tez.dag.records.TezTaskID taskId)

Specified by:

scheduleSpeculativeTask in interface Vertex

scheduleTasks

public void scheduleTasks(List<org.apache.tez.dag.api.VertexManagerPluginContext.ScheduleTaskRequest> tasksToSchedule)

Specified by:

scheduleTasks in interface Vertex

reconfigureVertex

public void reconfigureVertex(int parallelism,
                              @Nullable
                              org.apache.tez.dag.api.VertexLocationHint locationHint,
                              @Nullable
                              Map<String,org.apache.tez.dag.api.EdgeProperty> sourceEdgeProperties)
                       throws AMUserCodeException

Specified by:

reconfigureVertex in interface Vertex

Throws:

AMUserCodeException

reconfigureVertex

public void reconfigureVertex(@Nullable
                              Map<String,org.apache.tez.runtime.api.InputSpecUpdate> rootInputSpecUpdate,
                              int parallelism,
                              @Nullable
                              org.apache.tez.dag.api.VertexLocationHint locationHint)
                       throws AMUserCodeException

Specified by:

reconfigureVertex in interface Vertex

Throws:

AMUserCodeException

reconfigureVertex

public void reconfigureVertex(int parallelism,
                              @Nullable
                              org.apache.tez.dag.api.VertexLocationHint locationHint,
                              @Nullable
                              Map<String,org.apache.tez.dag.api.EdgeProperty> sourceEdgeProperties,
                              @Nullable
                              Map<String,org.apache.tez.runtime.api.InputSpecUpdate> rootInputSpecUpdate)
                       throws AMUserCodeException

Specified by:

reconfigureVertex in interface Vertex

Throws:

AMUserCodeException

setParallelism

public void setParallelism(int parallelism,
                           org.apache.tez.dag.api.VertexLocationHint vertexLocationHint,
                           Map<String,org.apache.tez.dag.api.EdgeManagerPluginDescriptor> sourceEdgeManagers,
                           Map<String,org.apache.tez.runtime.api.InputSpecUpdate> rootInputSpecUpdates,
                           boolean fromVertexManager)
                    throws AMUserCodeException

Specified by:

setParallelism in interface Vertex

Throws:

AMUserCodeException

setVertexLocationHint

public void setVertexLocationHint(org.apache.tez.dag.api.VertexLocationHint vertexLocationHint)

Specified by:

setVertexLocationHint in interface Vertex

vertexReconfigurationPlanned

public void vertexReconfigurationPlanned()

Specified by:

vertexReconfigurationPlanned in interface Vertex

doneReconfiguringVertex

public void doneReconfiguringVertex()

Specified by:

doneReconfiguringVertex in interface Vertex

handle

public void handle(VertexEvent event)

Specified by:

handle in interface org.apache.hadoop.yarn.event.EventHandler<VertexEvent>

addTask

protected void addTask(Task task)

createRootInputInitializerManager

protected RootInputInitializerManager createRootInputInitializerManager(String dagName,
                                                                        String vertexName,
                                                                        org.apache.tez.dag.records.TezVertexID vertexID,
                                                                        org.apache.hadoop.yarn.event.EventHandler eventHandler,
                                                                        int numTasks,
                                                                        int numNodes,
                                                                        org.apache.hadoop.yarn.api.records.Resource vertexTaskResource,
                                                                        org.apache.hadoop.yarn.api.records.Resource totalResource)

constructFinalFullcounters

@InterfaceAudience.Private
public void constructFinalFullcounters()

getTaskAttemptTezEvents

public TaskAttemptEventInfo getTaskAttemptTezEvents(org.apache.tez.dag.records.TezTaskAttemptID attemptID,
                                                    int fromEventId,
                                                    int preRoutedFromEventId,
                                                    int maxEvents)

Specified by:

getTaskAttemptTezEvents in interface Vertex

setInputVertices

public void setInputVertices(Map<Vertex,Edge> inVertices)

Specified by:

setInputVertices in interface Vertex

setOutputVertices

public void setOutputVertices(Map<Vertex,Edge> outVertices)

Specified by:

setOutputVertices in interface Vertex

setAdditionalInputs

public void setAdditionalInputs(List<org.apache.tez.dag.api.records.DAGProtos.RootInputLeafOutputProto> inputs)

Specified by:

setAdditionalInputs in interface Vertex

handleSpeculatorEvent

public void handleSpeculatorEvent(SpeculatorEvent event)

Specified by:

handleSpeculatorEvent in interface Vertex

getOutputCommitters

@Nullable
public Map<String,org.apache.tez.runtime.api.OutputCommitter> getOutputCommitters()

Specified by:

getOutputCommitters in interface Vertex

getOutputCommitter

@Nullable
 @InterfaceAudience.Private
public org.apache.tez.runtime.api.OutputCommitter getOutputCommitter(String outputName)

setAdditionalOutputs

public void setAdditionalOutputs(List<org.apache.tez.dag.api.records.DAGProtos.RootInputLeafOutputProto> outputs)

Specified by:

setAdditionalOutputs in interface Vertex

getAdditionalInputs

@Nullable
public Map<String,org.apache.tez.dag.api.RootInputLeafOutput<org.apache.tez.dag.api.InputDescriptor,org.apache.tez.dag.api.InputInitializerDescriptor>> getAdditionalInputs()

Specified by:

getAdditionalInputs in interface Vertex

getAdditionalOutputs

@Nullable
public Map<String,org.apache.tez.dag.api.RootInputLeafOutput<org.apache.tez.dag.api.OutputDescriptor,org.apache.tez.dag.api.OutputCommitterDescriptor>> getAdditionalOutputs()

Specified by:

getAdditionalOutputs in interface Vertex

compareTo

public int compareTo(Vertex other)

Specified by:

compareTo in interface Comparable<Vertex>

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getInputVertices

public Map<Vertex,Edge> getInputVertices()

Specified by:

getInputVertices in interface Vertex

getOutputVertices

public Map<Vertex,Edge> getOutputVertices()

Specified by:

getOutputVertices in interface Vertex

getStatistics

public org.apache.tez.runtime.api.VertexStatistics getStatistics()

Specified by:

getStatistics in interface Vertex

getInputVerticesCount

public int getInputVerticesCount()

Specified by:

getInputVerticesCount in interface Vertex

getOutputVerticesCount

public int getOutputVerticesCount()

Specified by:

getOutputVerticesCount in interface Vertex

getProcessorDescriptor

public org.apache.tez.dag.api.ProcessorDescriptor getProcessorDescriptor()

Specified by:

getProcessorDescriptor in interface Vertex

getDAG

public DAG getDAG()

Specified by:

getDAG in interface Vertex

getTaskResource

public org.apache.hadoop.yarn.api.records.Resource getTaskResource()

Specified by:

getTaskResource in interface Vertex

getInputSpecList

public List<org.apache.tez.runtime.api.impl.InputSpec> getInputSpecList(int taskIndex)
                                                                 throws AMUserCodeException

Specified by:

getInputSpecList in interface Vertex

Throws:

AMUserCodeException

getOutputSpecList

public List<org.apache.tez.runtime.api.impl.OutputSpec> getOutputSpecList(int taskIndex)
                                                                   throws AMUserCodeException

Specified by:

getOutputSpecList in interface Vertex

Throws:

AMUserCodeException

getGroupInputSpecList

public List<org.apache.tez.runtime.api.impl.GroupInputSpec> getGroupInputSpecList()

Specified by:

getGroupInputSpecList in interface Vertex

addSharedOutputs

public void addSharedOutputs(Set<String> outputs)

Specified by:

addSharedOutputs in interface Vertex

getSharedOutputs

public Set<String> getSharedOutputs()

Specified by:

getSharedOutputs in interface Vertex

getSpeculator

public LegacySpeculator getSpeculator()