#include <QueryManager.hpp>

Collaboration diagram for NES::Runtime::DynamicQueryManager:

Public Member Functions
	DynamicQueryManager (std::shared_ptr< AbstractQueryStatusListener > queryStatusListener, std::vector< BufferManagerPtr > bufferManager, WorkerId nodeEngineId, uint16_t numThreads, HardwareManagerPtr hardwareManager, uint64_t numberOfBuffersPerEpoch, std::vector< uint64_t > workerToCoreMapping={})

void	destroy () override
	reset query manager. After this call, it wont be possible to use the query manager. More...

ExecutionResult	processNextTask (bool running, WorkerContext &workerContext) override
	process task from task queue More...

void	addWorkForNextPipeline (TupleBuffer &buffer, Execution::SuccessorExecutablePipeline executable, uint32_t queueId=0) override
	add work to the query manager, this methods is source-driven and is called for each buffer generated by the window trigger More...

Public Member Functions inherited from NES::Runtime::AbstractQueryManager
	AbstractQueryManager ()=delete

	AbstractQueryManager (const AbstractQueryManager &)=delete

AbstractQueryManager &	operator= (const AbstractQueryManager &)=delete

	AbstractQueryManager (std::shared_ptr< AbstractQueryStatusListener > queryStatusListener, std::vector< BufferManagerPtr > bufferManagers, WorkerId nodeEngineId, uint16_t numThreads, HardwareManagerPtr hardwareManager, uint64_t numberOfBuffersPerEpoch, std::vector< uint64_t > workerToCoreMapping={})

virtual	~AbstractQueryManager () NES_NOEXCEPT(false) override

virtual bool	registerExecutableQueryPlan (const Execution::ExecutableQueryPlanPtr &executableQueryPlan)
	register a query by extracting sources, windows and sink and add them to respective map More...

bool	unregisterExecutableQueryPlan (const Execution::ExecutableQueryPlanPtr &executableQueryPlan)
	deregister a query by extracting sources, windows and sink and remove them from respective map More...

bool	startExecutableQueryPlan (const Execution::ExecutableQueryPlanPtr &qep)
	method to start a query More...

bool	stopExecutableQueryPlan (const Execution::ExecutableQueryPlanPtr &qep, Runtime::QueryTerminationType type=Runtime::QueryTerminationType::HardStop)
	method to start a query More...

bool	failExecutableQueryPlan (const Execution::ExecutableQueryPlanPtr &qep)
	method to fail a query More...

void	postReconfigurationCallback (ReconfigurationMessage &task) override

void	reconfigure (ReconfigurationMessage &, WorkerContext &context) override

Execution::ExecutableQueryPlanStatus	getQepStatus (DecomposedQueryIdWithVersion decomposedQueryIdWithVersion)
	retrieve the execution status of a given local query sub plan id. More...

Execution::ExecutableQueryPlanPtr	getQueryExecutionPlan (DecomposedQueryIdWithVersion decomposedQueryIdWithVersion) const
	Provides the QEP object for an id. More...

bool	canTriggerEndOfStream (DataSourcePtr source, Runtime::QueryTerminationType)

QueryStatisticsPtr	getQueryStatistics (DecomposedQueryId decomposedQueryId)
	method to return the query statistics More...

void	resetQueryStatistics (DecomposedQueryId decomposedQueryId)
	Reset statistics for the decomposed query plan. More...

WorkerId	getNodeId () const

BufferManagerPtr	getBufferManager ()

void	notifyTaskFailure (Execution::SuccessorExecutablePipeline pipeline, const std::string &message)
	This method informs the QueryManager that a task has failed. More...

uint64_t	getNumberOfBuffersPerEpoch () const
	Returns the numberOfBuffersPerEpoch. More...

void	notifySourceFailure (DataSourcePtr source, const std::string errorMessage)
	This method informs the QueryManager that a source has failed. More...

void	notifyQueryStatusChange (const Execution::ExecutableQueryPlanPtr &qep, Execution::ExecutableQueryPlanStatus newStatus)
	Informs the query manager about a status change in a sub query plan. More...

SharedQueryId	getSharedQueryId (DecomposedQueryIdWithVersion decomposedQueryIdWithVersion) const
	get the shared query id mapped to the decomposed query plan id More...

bool	addEndOfStream (DataSourcePtr source, Runtime::QueryTerminationType graceful=Runtime::QueryTerminationType::Graceful)
	introduces end of stream to all QEPs connected to this source More...

bool	propagateReconfigurationMarker (const ReconfigurationMarkerPtr &marker, DataSourcePtr source)
	propagates a reconfiguration marker to all downstream operators of a source operator More...

bool	startNewExecutableQueryPlanAndPropagateMarker (const ReconfigurationMarkerPtr marker, DecomposedQueryIdWithVersion decomposedQueryIdWithVersion)
	starts new executable plan and propagates reconfiguration marker to it's source More...

bool	isThreadPoolRunning () const

uint64_t	getCurrentTaskSum ()

uint64_t	getNumberOfWorkerThreads ()

void	notifySourceCompletion (DataSourcePtr source, QueryTerminationType terminationType)
	Notifies that a source operator is done with its execution. More...

void	notifyPipelineCompletion (DecomposedQueryId decomposedQueryId, Execution::ExecutablePipelinePtr pipeline, QueryTerminationType terminationType)
	Notifies that a pipeline is done with its execution. More...

void	notifySinkCompletion (DecomposedQueryId decomposedQueryId, DecomposedQueryPlanVersion decomposedQueryVersion, DataSinkPtr sink, QueryTerminationType terminationType)
	Notifies that a sink operator is done with its execution. More...

std::optional< ReconfigurationMarkerEventPtr >	getReconfigurationEvent (Network::NetworkSourcePtr networkSource, SharedQueryId sharedQueryId, const ReconfigurationMarker &marker) const

std::unordered_set< DecomposedQueryIdWithVersion >	getExecutablePlanIdsForSource (DataSourcePtr source) const

Public Member Functions inherited from NES::detail::virtual_enable_shared_from_this< AbstractQueryManager, false >
	~virtual_enable_shared_from_this () NES_NOEXCEPT(isNoexceptDestructible) override=default

std::shared_ptr< T1 >	shared_from_this ()

std::weak_ptr< T1 >	weak_from_this ()

Public Member Functions inherited from NES::detail::virtual_enable_shared_from_this_base< isNoexceptDestructible >
virtual	~virtual_enable_shared_from_this_base () NES_NOEXCEPT(isNoexceptDestructible)=default

Public Member Functions inherited from NES::Runtime::Reconfigurable
	~Reconfigurable () NES_NOEXCEPT(false) override=default

Public Member Functions inherited from NES::detail::virtual_enable_shared_from_this< Reconfigurable, false >
	~virtual_enable_shared_from_this () NES_NOEXCEPT(isNoexceptDestructible) override=default

std::shared_ptr< T1 >	shared_from_this ()

std::weak_ptr< T1 >	weak_from_this ()

Protected Member Functions
ExecutionResult	terminateLoop (WorkerContext &) override

void	updateStatistics (const Task &task, SharedQueryId sharedQueryId, DecomposedQueryId decomposedQueryId, PipelineId pipeId, WorkerContext &workerContext) override

uint64_t	getNumberOfTasksInWorkerQueues () const override
	get number of tasks in the queue More...

uint64_t	getNumberOfBuffersPerEpoch () const
	Returns the numberOfBuffersPerEpoch. More...

Protected Member Functions inherited from NES::Runtime::AbstractQueryManager
void	completedWork (Task &task, WorkerContext &workerContext)
	finalize task execution by: 1.) update statistics (number of processed tuples and tasks) 2.) release input buffer (give back to the buffer manager) More...

bool	addSoftEndOfStream (DataSourcePtr source)
	Triggers a soft end of stream for a source. More...

bool	addHardEndOfStream (DataSourcePtr source)
	Triggers a hard end of stream for a source. More...

bool	addFailureEndOfStream (DataSourcePtr source)
	Triggers a failure end of stream for a source. More...

uint64_t	getNextTaskId ()
	Returns the next free task id. More...

Additional Inherited Members
Public Types inherited from NES::Runtime::AbstractQueryManager
enum class	QueryManagerStatus : uint8_t { Created , Running , Stopped , Destroyed , Failed }

using	inherited0 = NES::detail::virtual_enable_shared_from_this< AbstractQueryManager, false >

using	inherited1 = Reconfigurable

Public Attributes inherited from NES::Runtime::AbstractQueryManager
folly::Synchronized< std::unordered_map< std::string, std::shared_ptr< BasePersistentSourceProperties > > >	persistentSourceProperties

Protected Attributes inherited from NES::Runtime::AbstractQueryManager
WorkerId	nodeEngineId

std::atomic_uint64_t	taskIdCounter = 0

std::vector< BufferManagerPtr >	bufferManagers

uint16_t	numThreads

HardwareManagerPtr	hardwareManager

ThreadPoolPtr	threadPool {nullptr}
	worker threads running compute tasks More...

AsyncTaskExecutorPtr	asyncTaskExecutor
	worker thread for async maintenance task, e.g., fail queryIdAndCatalogEntryMapping More...

std::unordered_map< DecomposedQueryIdWithVersion, Execution::ExecutableQueryPlanPtr >	runningQEPs

std::mutex	statisticsMutex

cuckoohash_map< DecomposedQueryId, QueryStatisticsPtr >	queryToStatisticsMap

std::mutex	reconfigurationMutex

std::vector< uint64_t >	workerToCoreMapping

std::recursive_mutex	queryMutex

std::atomic< QueryManagerStatus >	queryManagerStatus {QueryManagerStatus::Created}

std::vector< AtomicCounter< uint64_t > >	tempCounterTasksCompleted

std::shared_ptr< AbstractQueryStatusListener >	queryStatusListener

std::unordered_map< DecomposedQueryIdWithVersion, std::vector< OperatorId > >	decomposeQueryToSourceIdMapping

std::unordered_map< OperatorId, std::vector< Execution::ExecutableQueryPlanPtr > >	sourceToQEPMapping

uint64_t	numberOfBuffersPerEpoch

Constructor & Destructor Documentation

◆ DynamicQueryManager()

NES::Runtime::DynamicQueryManager::DynamicQueryManager	(	std::shared_ptr< AbstractQueryStatusListener >	queryStatusListener,
		std::vector< BufferManagerPtr >	bufferManager,
		WorkerId	nodeEngineId,
		uint16_t	numThreads,
		HardwareManagerPtr	hardwareManager,
		uint64_t	numberOfBuffersPerEpoch,
		std::vector< uint64_t >	workerToCoreMapping = `{}`
	)

explicit

References NES_DEBUG, and NES::Runtime::AbstractQueryManager::numThreads.

Member Function Documentation

◆ addWorkForNextPipeline()

void NES::Runtime::DynamicQueryManager::addWorkForNextPipeline	(	TupleBuffer &	buffer,
		Execution::SuccessorExecutablePipeline	executable,
		uint32_t	queueId = `0`
	)

overridevirtual

add work to the query manager, this methods is source-driven and is called for each buffer generated by the window trigger

Parameters

Pointer	to the tuple buffer containing the data
Pointer	to the pipeline stage that will be executed next
id	of the queue where to put the task (only necessary if multiple queues are used)

Implements NES::Runtime::AbstractQueryManager.

References NES::Runtime::AbstractQueryManager::getNextTaskId(), NES_THROW_RUNTIME_ERROR, NES_TRACE, and NES_WARNING.

Here is the call graph for this function:

◆ destroy()

void NES::Runtime::DynamicQueryManager::destroy ( )

overridevirtual

reset query manager. After this call, it wont be possible to use the query manager.

Reimplemented from NES::Runtime::AbstractQueryManager.

References NES::Runtime::AbstractQueryManager::destroy(), NES::Runtime::AbstractQueryManager::Destroyed, and NES::Runtime::AbstractQueryManager::queryManagerStatus.

Here is the call graph for this function:

◆ getNumberOfBuffersPerEpoch()

uint64_t NES::Runtime::DynamicQueryManager::getNumberOfBuffersPerEpoch ( ) const

protected

Returns the numberOfBuffersPerEpoch.

Returns: numberOfBuffersPerEpoch

References NES::Runtime::AbstractQueryManager::numberOfBuffersPerEpoch.

◆ getNumberOfTasksInWorkerQueues()

uint64_t NES::Runtime::DynamicQueryManager::getNumberOfTasksInWorkerQueues ( ) const

overrideprotectedvirtual

get number of tasks in the queue

Returns: task count

Implements NES::Runtime::AbstractQueryManager.

◆ processNextTask()

ExecutionResult NES::Runtime::DynamicQueryManager::processNextTask	(	bool	running,
		WorkerContext &	workerContext
	)

overridevirtual

process task from task queue

Parameters

bool	indicating if the thread pool is still running
worker	context

Returns: an execution result

Implements NES::Runtime::AbstractQueryManager.

References NES::Runtime::AbstractQueryManager::completedWork(), NES::Error, NES::Finished, NES::Runtime::Task::getExecutable(), NES::Runtime::NesThread::getId(), NES::Runtime::Task::getNumberOfInputTuples(), NES_ERROR, NES_TRACE, NES::Runtime::AbstractQueryManager::notifyTaskFailure(), NES::Ok, terminateLoop(), and NES::Runtime::Task::toString().

Here is the call graph for this function:

◆ terminateLoop()

ExecutionResult NES::Runtime::DynamicQueryManager::terminateLoop ( WorkerContext & workerContext )

overrideprotectedvirtual

Returns

Implements NES::Runtime::AbstractQueryManager.

References NES::Finished, and NES::Runtime::Task::isReconfiguration().

Referenced by processNextTask().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ updateStatistics()

void NES::Runtime::DynamicQueryManager::updateStatistics	(	const Task &	task,
		SharedQueryId	sharedQueryId,
		DecomposedQueryId	decomposedQueryId,
		PipelineId	pipeId,
		WorkerContext &	workerContext
	)

overrideprotectedvirtual

Parameters

task
sharedQueryId
decomposedQueryId
pipeId
workerContext

Reimplemented from NES::Runtime::AbstractQueryManager.

References NES::Runtime::AbstractQueryManager::queryToStatisticsMap, and NES::Runtime::AbstractQueryManager::updateStatistics().

Here is the call graph for this function:

The documentation for this class was generated from the following files:

/nebulastream/nes-runtime/include/Runtime/QueryManager.hpp
/nebulastream/nes-runtime/src/Runtime/QueryManager.cpp
/nebulastream/nes-runtime/src/Runtime/QueryManagerTaskScheduler.cpp

Public Member Functions

Protected Member Functions

Additional Inherited Members

Constructor & Destructor Documentation

◆ DynamicQueryManager()

Member Function Documentation

◆ addWorkForNextPipeline()

◆ destroy()

◆ getNumberOfBuffersPerEpoch()

◆ getNumberOfTasksInWorkerQueues()

◆ processNextTask()

◆ terminateLoop()

◆ updateStatistics()