#include <exec-node.h>

Inheritance diagram for impala::ExecNode:

Collaboration diagram for impala::ExecNode:

Classes
class	RowBatchQueue

Public Member Functions
	ExecNode (ObjectPool *pool, const TPlanNode &tnode, const DescriptorTbl &descs)
	Init conjuncts. More...

virtual	~ExecNode ()

virtual Status	Init (const TPlanNode &tnode)

virtual Status	Prepare (RuntimeState *state)

virtual Status	Open (RuntimeState *state)

virtual Status	GetNext (RuntimeState state, RowBatch row_batch, bool *eos)=0

virtual Status	Reset (RuntimeState *state)

virtual void	Close (RuntimeState *state)

void	CollectNodes (TPlanNodeType::type node_type, std::vector< ExecNode * > *nodes)

void	CollectScanNodes (std::vector< ExecNode * > *nodes)
	Collect all scan node types. More...

std::string	DebugString () const
	Returns a string representation in DFS order of the plan rooted at this. More...

virtual void	DebugString (int indentation_level, std::stringstream *out) const

const std::vector< ExprContext * > &	conjunct_ctxs () const

int	id () const

TPlanNodeType::type	type () const

const RowDescriptor &	row_desc () const

int64_t	rows_returned () const

int64_t	limit () const

bool	ReachedLimit ()

RuntimeProfile *	runtime_profile ()

MemTracker *	mem_tracker ()

MemTracker *	expr_mem_tracker ()

Static Public Member Functions
static Status	CreateTree (ObjectPool pool, const TPlan &plan, const DescriptorTbl &descs, ExecNode *root)

static void	SetDebugOptions (int node_id, TExecNodePhase::type phase, TDebugAction::type action, ExecNode *tree)
	Set debug action for node with given id in 'tree'. More...

static bool	EvalConjuncts (ExprContext const ctxs, int num_ctxs, TupleRow *row)

static llvm::Function *	CodegenEvalConjuncts (RuntimeState state, const std::vector< ExprContext > &conjunct_ctxs, const char *name="EvalConjuncts")

static int	GetNodeIdFromProfile (RuntimeProfile *p)
	Extract node id from p->name(). More...

Static Public Attributes
static const std::string	ROW_THROUGHPUT_COUNTER = "RowsReturnedRate"
	Names of counters shared by all exec nodes. More...

Protected Member Functions
ExecNode *	child (int i)

bool	is_closed ()

virtual bool	IsScanNode () const

void	InitRuntimeProfile (const std::string &name)

Status	ExecDebugAction (TExecNodePhase::type phase, RuntimeState *state)

void	AddRuntimeExecOption (const std::string &option)
	Appends option to 'runtime_exec_options_'. More...

virtual Status	QueryMaintenance (RuntimeState *state)

void	AddExprCtxToFree (ExprContext *ctx)

void	AddExprCtxsToFree (const std::vector< ExprContext * > &ctxs)

void	AddExprCtxsToFree (const SortExecExprs &sort_exec_exprs)

Static Protected Member Functions
static Status	CreateNode (ObjectPool pool, const TPlanNode &tnode, const DescriptorTbl &descs, ExecNode *node)
	Create a single exec node derived from thrift node; place exec node in 'pool'. More...

static Status	CreateTreeHelper (ObjectPool pool, const std::vector< TPlanNode > &tnodes, const DescriptorTbl &descs, ExecNode parent, int node_idx, ExecNode *root)

Protected Attributes
int	id_

TPlanNodeType::type	type_

ObjectPool *	pool_

std::vector< ExprContext * >	conjunct_ctxs_

std::vector< ExecNode * >	children_

RowDescriptor	row_descriptor_

TExecNodePhase::type	debug_phase_

TDebugAction::type	debug_action_

int64_t	limit_

int64_t	num_rows_returned_

boost::scoped_ptr< RuntimeProfile >	runtime_profile_

RuntimeProfile::Counter *	rows_returned_counter_

RuntimeProfile::Counter *	rows_returned_rate_

boost::scoped_ptr< MemTracker >	mem_tracker_
	Account for peak memory used by this node. More...

boost::scoped_ptr< MemTracker >	expr_mem_tracker_
	MemTracker that should be used for ExprContexts. More...

boost::mutex	exec_options_lock_

std::string	runtime_exec_options_

Private Attributes
bool	is_closed_

std::vector< ExprContext * >	expr_ctxs_to_free_
	Expr contexts whose local allocations are safe to free in the main execution thread. More...

Friends
class	DataSink

Detailed Description

Superclass of all executor nodes. All subclasses need to make sure to check RuntimeState::is_cancelled() periodically in order to ensure timely termination after the cancellation flag gets set.

Definition at line 46 of file exec-node.h.

Constructor & Destructor Documentation

impala::ExecNode::ExecNode	(	ObjectPool *	pool,
		const TPlanNode &	tnode,
		const DescriptorTbl &	descs
	)

Init conjuncts.

Definition at line 106 of file exec-node.cc.

References InitRuntimeProfile(), and impala::PrintPlanNodeType().

impala::ExecNode::~ExecNode ( )

virtual

Definition at line 121 of file exec-node.cc.

Member Function Documentation

void impala::ExecNode::AddExprCtxsToFree ( const std::vector< ExprContext * > & ctxs )

protected

Referenced by AddExprCtxsToFree(), impala::UnionNode::Prepare(), impala::SortNode::Prepare(), impala::TopNNode::Prepare(), impala::ExchangeNode::Prepare(), impala::PartitionedHashJoinNode::Prepare(), Prepare(), impala::PartitionedAggregationNode::Prepare(), and impala::HdfsScanNode::Prepare().

void impala::ExecNode::AddExprCtxsToFree ( const SortExecExprs & sort_exec_exprs )

protected

Definition at line 410 of file exec-node.cc.

References AddExprCtxsToFree(), impala::SortExecExprs::lhs_ordering_expr_ctxs(), impala::SortExecExprs::rhs_ordering_expr_ctxs(), and impala::SortExecExprs::sort_tuple_slot_expr_ctxs().

void impala::ExecNode::AddExprCtxToFree ( ExprContext * ctx )

inlineprotected

Add an ExprContext to have its local allocations freed by QueryMaintenance(). Exprs that are evaluated in the main execution thread should be added. Exprs evaluated in a separate thread are generally not safe to add, since a local allocation may be freed while it's being used. Rather than using this mechanism, threads should call FreeLocalAllocations() on local ExprContexts periodically.

Definition at line 276 of file exec-node.h.

References expr_ctxs_to_free_.

Referenced by impala::AnalyticEvalNode::Prepare().

void impala::ExecNode::AddRuntimeExecOption ( const std::string & option )

protected

Appends option to 'runtime_exec_options_'.

Definition at line 188 of file exec-node.cc.

References impala::RuntimeProfile::AddInfoString(), exec_options_lock_, runtime_exec_options_, and runtime_profile().

Referenced by impala::PartitionedHashJoinNode::AttachProbeFilters(), impala::HashJoinNode::ConstructBuildSide(), impala::BlockingJoinNode::Open(), impala::HashJoinNode::Prepare(), impala::AggregationNode::Prepare(), impala::PartitionedHashJoinNode::Prepare(), impala::PartitionedAggregationNode::Prepare(), impala::HdfsScanNode::Prepare(), and impala::HdfsScanNode::StopAndFinalizeCounters().

ExecNode* impala::ExecNode::child ( int i )

inlineprotected

Definition at line 241 of file exec-node.h.

References children_.

void impala::ExecNode::Close ( RuntimeState * state )

virtual

Close() will get called for every exec node, regardless of what else is called and the status of these calls (i.e. Prepare() may never have been called, or Prepare()/Open()/GetNext() returned with an error). Close() releases all resources that were allocated in Open()/GetNext(), even if the latter ended with an error. Close() can be called if the node has been prepared or the node is closed. The default implementation updates runtime profile counters and calls Close() on the children. Subclasses should check if the node has already been closed (is_closed()), then close themselves, then call the base Close(). Nodes that are using tuples returned by a child may call Close() on their children before their own Close() if the child node has returned eos. It is only safe to call Close() on the child node while the parent node is still returning rows if the parent node fully materializes the child's input.

Reimplemented in impala::HdfsScanNode, impala::PartitionedAggregationNode, impala::AnalyticEvalNode, impala::PartitionedHashJoinNode, impala::BlockingJoinNode, impala::AggregationNode, impala::DataSourceScanNode, impala::HashJoinNode, impala::CrossJoinNode, impala::HBaseScanNode, impala::ExchangeNode, impala::TopNNode, impala::SortNode, impala::UnionNode, and impala::SelectNode.

Definition at line 166 of file exec-node.cc.

References children_, impala::Expr::Close(), conjunct_ctxs_, COUNTER_SET, impala::RuntimeState::instance_mem_tracker(), is_closed_, impala::MemTracker::LogUsage(), mem_tracker(), num_rows_returned_, impala::RuntimeState::query_id(), and rows_returned_counter_.

Function * impala::ExecNode::CodegenEvalConjuncts	(	RuntimeState *	state,
		const std::vector< ExprContext * > &	conjunct_ctxs,
		const char *	name = `"EvalConjuncts"`
	)

static

Returns a codegen'd version of EvalConjuncts(), or NULL if the function couldn't be codegen'd. The codegen'd version uses inlined, codegen'd GetBooleanVal() functions.

Definition at line 452 of file exec-node.cc.

References impala::LlvmCodeGen::FnPrototype::AddArgument(), impala::LlvmCodeGen::context(), impala::CodegenAnyVal::CreateCallWrapped(), impala::LlvmCodeGen::false_value(), impala::LlvmCodeGen::FinalizeFunction(), impala::RuntimeState::GetCodegen(), impala::Status::GetDetail(), impala::CodegenAnyVal::GetIsNull(), impala::LlvmCodeGen::GetType(), impala::CodegenAnyVal::GetVal(), impala::TupleRow::LLVM_CLASS_NAME, impala::ExprContext::LLVM_CLASS_NAME, impala::Status::ok(), impala::LlvmCodeGen::true_value(), type(), impala::TYPE_BOOLEAN, impala::TYPE_INT, and VLOG_QUERY.

Referenced by impala::HdfsAvroScanner::CodegenDecodeAvroData(), impala::HashJoinNode::CodegenProcessProbeBatch(), and impala::PartitionedHashJoinNode::CodegenProcessProbeBatch().

void impala::ExecNode::CollectNodes	(	TPlanNodeType::type	node_type,
		std::vector< ExecNode * > *	nodes
	)

Collect all nodes of given 'node_type' that are part of this subtree, and return in 'nodes'.

Definition at line 359 of file exec-node.cc.

References children_, and type_.

Referenced by CollectScanNodes(), and impala::PlanFragmentExecutor::Prepare().

void impala::ExecNode::CollectScanNodes ( std::vector< ExecNode * > * nodes )

Collect all scan node types.

Definition at line 366 of file exec-node.cc.

References CollectNodes().

Referenced by impala::PlanFragmentExecutor::Prepare().

const std::vector<ExprContext*>& impala::ExecNode::conjunct_ctxs ( ) const

inline

Definition at line 152 of file exec-node.h.

References conjunct_ctxs_.

Referenced by impala::HdfsScanNode::ComputeSlotMaterializationOrder(), impala::SelectNode::CopyRows(), impala::UnionNode::EvalAndMaterializeExprs(), impala::HashJoinNode::GetNext(), impala::PartitionedHashJoinNode::OutputUnmatchedBuild(), impala::HashJoinNode::ProcessProbeBatch(), and impala::PartitionedHashJoinNode::ProcessProbeBatch().

Status impala::ExecNode::CreateNode	(	ObjectPool *	pool,
		const TPlanNode &	tnode,
		const DescriptorTbl &	descs,
		ExecNode **	node
	)

staticprotected

Create a single exec node derived from thrift node; place exec node in 'pool'.

Definition at line 260 of file exec-node.cc.

References impala::ObjectPool::Add(), impala::Status::OK, and RETURN_IF_ERROR.

Referenced by CreateTreeHelper().

Status impala::ExecNode::CreateTree	(	ObjectPool *	pool,
		const TPlan &	plan,
		const DescriptorTbl &	descs,
		ExecNode **	root
	)

static

Creates exec node tree from list of nodes contained in plan via depth-first traversal. All nodes are placed in pool. Returns error if 'plan' is corrupted, otherwise success.

Definition at line 199 of file exec-node.cc.

References CreateTreeHelper(), impala::Status::OK, and impala::Status::ok().

Referenced by impala::PlanFragmentExecutor::Prepare().

Status impala::ExecNode::CreateTreeHelper	(	ObjectPool *	pool,
		const std::vector< TPlanNode > &	tnodes,
		const DescriptorTbl &	descs,
		ExecNode *	parent,
		int *	node_idx,
		ExecNode **	root
	)

staticprotected

Definition at line 218 of file exec-node.cc.

References impala::RuntimeProfile::AddChild(), children_, CreateNode(), impala::Status::OK, RETURN_IF_ERROR, and runtime_profile().

Referenced by CreateTree().

string impala::ExecNode::DebugString ( ) const

Returns a string representation in DFS order of the plan rooted at this.

Definition at line 345 of file exec-node.cc.

Referenced by impala::SortNode::DebugString(), impala::TopNNode::DebugString(), impala::ExchangeNode::DebugString(), impala::AggregationNode::DebugString(), impala::AnalyticEvalNode::DebugString(), impala::PartitionedAggregationNode::DebugString(), impala::BlockingJoinNode::DebugString(), and impala::PlanFragmentExecutor::Prepare().

virtual void impala::ExecNode::DebugString	(	int	indentation_level,
		std::stringstream *	out
	)		const

virtual

Recursive helper method for generating a string for DebugString(). Implementations should call DebugString(int, std::stringstream) on their children. Input parameters: indentation_level: Current level in plan tree. Output parameters: out: Stream to accumulate debug string.

Reimplemented in impala::BlockingJoinNode, impala::PartitionedAggregationNode, impala::AnalyticEvalNode, impala::AggregationNode, impala::DataSourceScanNode, impala::ExchangeNode, impala::HBaseScanNode, impala::TopNNode, and impala::SortNode.

bool impala::ExecNode::EvalConjuncts	(	ExprContext const	ctxs,
		int	num_ctxs,
		TupleRow *	row
	)

static

Evaluate ExprContexts over row. Returns true if all exprs return true. TODO: This doesn't use the vector<Expr*> signature because I haven't figured out how to deal with declaring a templated std:vector type in IR

Definition at line 393 of file exec-node.cc.

References impala::ExprContext::GetBooleanVal(), impala_udf::AnyVal::is_null, and impala_udf::BooleanVal::val.

Referenced by impala::SelectNode::CopyRows(), impala::UnionNode::EvalAndMaterializeExprs(), impala::HdfsScanner::EvalConjuncts(), EvalOtherJoinConjuncts(), EvalOtherJoinConjuncts2(), impala::PartitionedHashJoinNode::EvaluateNullProbe(), impala::HBaseScanNode::GetNext(), impala::HashJoinNode::GetNext(), impala::AggregationNode::GetNext(), impala::PartitionedAggregationNode::GetNext(), impala::AnalyticEvalNode::GetNextOutputBatch(), impala::PartitionedHashJoinNode::OutputNullAwareProbeRows(), impala::PartitionedHashJoinNode::OutputUnmatchedBuild(), impala::CrossJoinNode::ProcessLeftChildBatch(), impala::HashJoinNode::ProcessProbeBatch(), and impala::PartitionedHashJoinNode::ProcessProbeBatch().

Status impala::ExecNode::ExecDebugAction	(	TExecNodePhase::type	phase,
		RuntimeState *	state
	)

protected

Executes debug_action_ if phase matches debug_phase_. 'phase' must not be INVALID.

Definition at line 378 of file exec-node.cc.

References impala::Status::CANCELLED, debug_action_, debug_phase_, impala::RuntimeState::is_cancelled(), and impala::Status::OK.

Referenced by impala::SelectNode::GetNext(), impala::SortNode::GetNext(), impala::UnionNode::GetNext(), impala::HBaseScanNode::GetNext(), impala::TopNNode::GetNext(), impala::ExchangeNode::GetNext(), impala::CrossJoinNode::GetNext(), impala::HashJoinNode::GetNext(), impala::AggregationNode::GetNext(), impala::AnalyticEvalNode::GetNext(), impala::PartitionedHashJoinNode::GetNext(), impala::PartitionedAggregationNode::GetNext(), impala::HdfsScanNode::GetNextInternal(), Open(), and Prepare().

MemTracker* impala::ExecNode::expr_mem_tracker ( )

inline

Definition at line 163 of file exec-node.h.

References expr_mem_tracker_.

Referenced by impala::PartitionedAggregationNode::Partition::InitStreams(), impala::SortNode::Prepare(), impala::UnionNode::Prepare(), impala::TopNNode::Prepare(), impala::ExchangeNode::Prepare(), impala::HashJoinNode::Prepare(), impala::AggregationNode::Prepare(), impala::AnalyticEvalNode::Prepare(), impala::PartitionedHashJoinNode::Prepare(), Prepare(), impala::PartitionedAggregationNode::Prepare(), and impala::HdfsScanNode::Prepare().

virtual Status impala::ExecNode::GetNext	(	RuntimeState *	state,
		RowBatch *	row_batch,
		bool *	eos
	)

pure virtual

Retrieves rows and returns them via row_batch. Sets eos to true if subsequent calls will not retrieve any more rows. Data referenced by any tuples returned in row_batch must not be overwritten by the callee until Close() is called. The memory holding that data can be returned via row_batch's tuple_data_pool (in which case it may be deleted by the caller) or held on to by the callee. The row_batch, including its tuple_data_pool, will be destroyed by the caller at some point prior to the final Close() call. In other words, if the memory holding the tuple data will be referenced by the callee in subsequent GetNext() calls, it must not be attached to the row_batch's tuple_data_pool. Caller must not be holding any io buffers. This will cause deadlock. TODO: AggregationNode and HashJoinNode cannot be "re-opened" yet.

Implemented in impala::HdfsScanNode, impala::PartitionedAggregationNode, impala::AnalyticEvalNode, impala::PartitionedHashJoinNode, impala::AggregationNode, impala::HashJoinNode, impala::DataSourceScanNode, impala::CrossJoinNode, impala::ExchangeNode, impala::TopNNode, impala::HBaseScanNode, impala::SortNode, impala::UnionNode, impala::SelectNode, and impala::EmptySetNode.

Referenced by impala::PlanFragmentExecutor::GetNextInternal(), and impala::BlockingJoinNode::Open().

int impala::ExecNode::GetNodeIdFromProfile ( RuntimeProfile * p )

static

Extract node id from p->name().

Definition at line 62 of file exec-node.cc.

References impala::RuntimeProfile::metadata().

int impala::ExecNode::id ( ) const

inline

Definition at line 154 of file exec-node.h.

References id_.

Status impala::ExecNode::Init ( const TPlanNode & tnode )

virtual

Initializes this object from the thrift tnode desc. The subclass should do any initialization that can fail in Init() rather than the ctor. If overridden in subclass, must first call superclass's Init().

Reimplemented in impala::PartitionedAggregationNode, impala::AnalyticEvalNode, impala::PartitionedHashJoinNode, impala::AggregationNode, impala::HashJoinNode, impala::BlockingJoinNode, impala::ExchangeNode, impala::TopNNode, impala::SortNode, and impala::UnionNode.

Definition at line 124 of file exec-node.cc.

References conjunct_ctxs_, impala::Expr::CreateExprTrees(), impala::Status::OK, pool_, and RETURN_IF_ERROR.

Referenced by impala::SortNode::Init(), impala::UnionNode::Init(), impala::TopNNode::Init(), impala::ExchangeNode::Init(), impala::BlockingJoinNode::Init(), impala::AggregationNode::Init(), impala::AnalyticEvalNode::Init(), and impala::PartitionedAggregationNode::Init().

void impala::ExecNode::InitRuntimeProfile ( const std::string & name )

protected

Definition at line 371 of file exec-node.cc.

References id_, pool_, and runtime_profile_.

Referenced by ExecNode().

bool impala::ExecNode::is_closed ( )

inlineprotected

Definition at line 242 of file exec-node.h.

References is_closed_.

virtual bool impala::ExecNode::IsScanNode ( ) const

inlineprotectedvirtual

Reimplemented in impala::ScanNode.

Definition at line 251 of file exec-node.h.

int64_t impala::ExecNode::limit ( ) const

inline

Definition at line 158 of file exec-node.h.

References limit_.

Referenced by impala::CrossJoinNode::GetNext(), and impala::HashJoinNode::LeftJoinGetNext().

MemTracker* impala::ExecNode::mem_tracker ( )

inline

Definition at line 162 of file exec-node.h.

References mem_tracker_.

Status impala::ExecNode::Open ( RuntimeState * state )

virtual

Performs any preparatory work prior to calling GetNext(). Caller must not be holding any io buffers. This will cause deadlock. If overridden in subclass, must first call superclass's Open(). If a parent exec node adds slot filters (see RuntimeState::AddBitmapFilter()), they need to be added before calling Open() on the child that will consume them.

Reimplemented in impala::HdfsScanNode, impala::PartitionedAggregationNode, impala::AnalyticEvalNode, impala::AggregationNode, impala::BlockingJoinNode, impala::DataSourceScanNode, impala::ExchangeNode, impala::TopNNode, impala::SortNode, impala::UnionNode, impala::HBaseScanNode, and impala::SelectNode.

Definition at line 154 of file exec-node.cc.

References conjunct_ctxs_, ExecDebugAction(), impala::Expr::Open(), and RETURN_IF_ERROR.

Referenced by impala::SelectNode::Open(), impala::HBaseScanNode::Open(), impala::UnionNode::Open(), impala::SortNode::Open(), impala::TopNNode::Open(), impala::ExchangeNode::Open(), impala::DataSourceScanNode::Open(), impala::BlockingJoinNode::Open(), impala::AggregationNode::Open(), impala::AnalyticEvalNode::Open(), impala::PartitionedAggregationNode::Open(), impala::HdfsScanNode::Open(), and impala::PlanFragmentExecutor::OpenInternal().

Status impala::ExecNode::Prepare ( RuntimeState * state )

virtual

Sets up internal structures, etc., without doing any actual work. Must be called prior to Open(). Will only be called once in this node's lifetime. All code generation (adding functions to the LlvmCodeGen object) must happen in Prepare(). Retrieving the jit compiled function pointer must happen in Open(). If overridden in subclass, must first call superclass's Prepare().

Reimplemented in impala::HdfsScanNode, impala::PartitionedAggregationNode, impala::ScanNode, impala::AnalyticEvalNode, impala::PartitionedHashJoinNode, impala::AggregationNode, impala::HashJoinNode, impala::BlockingJoinNode, impala::CrossJoinNode, impala::DataSourceScanNode, impala::ExchangeNode, impala::TopNNode, impala::SortNode, impala::UnionNode, impala::HBaseScanNode, and impala::SelectNode.

Definition at line 130 of file exec-node.cc.

References ADD_COUNTER, impala::RuntimeProfile::AddDerivedCounter(), AddExprCtxsToFree(), children_, conjunct_ctxs_, ExecDebugAction(), expr_mem_tracker(), expr_mem_tracker_, impala::RuntimeState::instance_mem_tracker(), mem_tracker_, impala::Status::OK, impala::Expr::Prepare(), RETURN_IF_ERROR, row_desc(), ROW_THROUGHPUT_COUNTER, rows_returned_counter_, rows_returned_rate_, runtime_profile(), runtime_profile_, and impala::RuntimeProfile::UnitsPerSecond().

Referenced by impala::SelectNode::Prepare(), impala::SortNode::Prepare(), impala::UnionNode::Prepare(), impala::TopNNode::Prepare(), impala::ExchangeNode::Prepare(), impala::BlockingJoinNode::Prepare(), impala::AggregationNode::Prepare(), impala::AnalyticEvalNode::Prepare(), impala::ScanNode::Prepare(), impala::PlanFragmentExecutor::Prepare(), and impala::PartitionedAggregationNode::Prepare().

Status impala::ExecNode::QueryMaintenance ( RuntimeState * state )

protectedvirtual

Frees any local allocations made by expr_ctxs_to_free_ and returns the result of state->CheckQueryState(). Nodes should call this periodically, e.g. once per input row batch. This should not be called outside the main execution thread. Nodes may override this to add extra periodic cleanup, e.g. freeing other local allocations. ExecNodes overriding this function should return ExecNode::QueryMaintenance().

Reimplemented in impala::PartitionedAggregationNode, and impala::AnalyticEvalNode.

Definition at line 401 of file exec-node.cc.

References impala::RuntimeState::CheckQueryState(), expr_ctxs_to_free_, and impala::ExprContext::FreeLocalAllocations().

Referenced by impala::CrossJoinNode::ConstructBuildSide(), impala::HashJoinNode::ConstructBuildSide(), impala::SelectNode::GetNext(), impala::SortNode::GetNext(), impala::UnionNode::GetNext(), impala::HBaseScanNode::GetNext(), impala::TopNNode::GetNext(), impala::ExchangeNode::GetNext(), impala::CrossJoinNode::GetNext(), impala::HashJoinNode::GetNext(), impala::AggregationNode::GetNext(), impala::PartitionedHashJoinNode::GetNext(), impala::HdfsScanNode::GetNextInternal(), impala::HBaseScanNode::Open(), impala::SortNode::Open(), impala::TopNNode::Open(), impala::BlockingJoinNode::Open(), impala::AggregationNode::Open(), impala::PartitionedHashJoinNode::ProcessBuildInput(), impala::AnalyticEvalNode::QueryMaintenance(), impala::PartitionedAggregationNode::QueryMaintenance(), and impala::SortNode::SortInput().

bool impala::ExecNode::ReachedLimit ( )

inline

Definition at line 159 of file exec-node.h.

References limit_, and num_rows_returned_.

Status impala::ExecNode::Reset ( RuntimeState * state )

virtual

Resets all data-specific state, returning this node to the state it was in after calling Prepare() and before calling Open(). Prepare() must have already been called before calling Reset(). Open() and GetNext() may have optionally been called. Close() must not have been called. If overridden in a subclass, must call superclass's Reset() at the end. The default implementation calls Reset() on children. Note that this function may be called many times, so should be fast. For example, accumulated memory does not need to be freed on every call if it's expensive.

Reimplemented in impala::HdfsScanNode, impala::PartitionedAggregationNode, impala::AnalyticEvalNode, impala::PartitionedHashJoinNode, impala::AggregationNode, impala::BlockingJoinNode, impala::HashJoinNode, impala::DataSourceScanNode, impala::CrossJoinNode, impala::ExchangeNode, impala::HBaseScanNode, impala::TopNNode, impala::SortNode, impala::UnionNode, and impala::SelectNode.

Definition at line 159 of file exec-node.cc.

References children_, impala::Status::OK, and RETURN_IF_ERROR.

Referenced by impala::BlockingJoinNode::Reset().

const RowDescriptor& impala::ExecNode::row_desc ( ) const

inline

Definition at line 156 of file exec-node.h.

References row_descriptor_.

int64_t impala::ExecNode::rows_returned ( ) const

inline

Definition at line 157 of file exec-node.h.

References num_rows_returned_.

Referenced by impala::CrossJoinNode::GetNext(), impala::AnalyticEvalNode::GetNext(), impala::HashJoinNode::LeftJoinGetNext(), impala::PartitionedAggregationNode::Open(), impala::HdfsSequenceScanner::ProcessDecompressedBlock(), impala::CrossJoinNode::ProcessLeftChildBatch(), impala::HashJoinNode::ProcessProbeBatch(), and impala::HdfsTextScanner::WriteFields().

RuntimeProfile* impala::ExecNode::runtime_profile ( )

inline

Definition at line 161 of file exec-node.h.

References runtime_profile_.

void impala::ExecNode::SetDebugOptions	(	int	node_id,
		TExecNodePhase::type	phase,
		TDebugAction::type	action,
		ExecNode *	tree
	)

static

Set debug action for node with given id in 'tree'.

Definition at line 332 of file exec-node.cc.

References children_, debug_action_, debug_phase_, and id_.

Referenced by impala::PlanFragmentExecutor::Prepare().

TPlanNodeType::type impala::ExecNode::type ( ) const

inline

Definition at line 155 of file exec-node.h.

References type_.

Referenced by CodegenEvalConjuncts(), impala::PartitionedAggregationNode::CodegenUpdateTuple(), and impala::PlanFragmentExecutor::Prepare().

Friends And Related Function Documentation

friend class DataSink

friend

Definition at line 172 of file exec-node.h.

Member Data Documentation

std::vector<ExecNode*> impala::ExecNode::children_

protected

Definition at line 214 of file exec-node.h.

Referenced by child(), Close(), CollectNodes(), CreateTreeHelper(), impala::HBaseScanNode::DebugString(), impala::UnionNode::GetNext(), impala::UnionNode::Open(), impala::AggregationNode::Open(), impala::PartitionedAggregationNode::Open(), impala::UnionNode::OpenCurrentChild(), Prepare(), impala::PartitionedAggregationNode::ProcessStream(), Reset(), and SetDebugOptions().

std::vector<ExprContext*> impala::ExecNode::conjunct_ctxs_

protected

TDebugAction::type impala::ExecNode::debug_action_

protected

Definition at line 220 of file exec-node.h.

Referenced by ExecDebugAction(), and SetDebugOptions().

TExecNodePhase::type impala::ExecNode::debug_phase_

protected

debug-only: if debug_action_ is not INVALID, node will perform action in debug_phase_

Definition at line 219 of file exec-node.h.

Referenced by ExecDebugAction(), and SetDebugOptions().

boost::mutex impala::ExecNode::exec_options_lock_

protected

Execution options that are determined at runtime. This is added to the runtime profile at Close(). Examples for options logged here would be "Codegen Enabled"

Definition at line 238 of file exec-node.h.

Referenced by AddRuntimeExecOption().

std::vector<ExprContext*> impala::ExecNode::expr_ctxs_to_free_

private

Expr contexts whose local allocations are safe to free in the main execution thread.

Definition at line 286 of file exec-node.h.

Referenced by AddExprCtxToFree(), and QueryMaintenance().

boost::scoped_ptr<MemTracker> impala::ExecNode::expr_mem_tracker_

protected

MemTracker that should be used for ExprContexts.

Definition at line 233 of file exec-node.h.

Referenced by expr_mem_tracker(), and Prepare().

int impala::ExecNode::id_

protected

Definition at line 209 of file exec-node.h.

Referenced by impala::PartitionedAggregationNode::CreateHashPartitions(), id(), InitRuntimeProfile(), impala::PartitionedAggregationNode::NextPartition(), impala::ExchangeNode::Prepare(), impala::PartitionedHashJoinNode::PrepareNextPartition(), impala::PartitionedHashJoinNode::ProcessBuildInput(), and SetDebugOptions().

bool impala::ExecNode::is_closed_

private

Set in ExecNode::Close(). Used to make Close() idempotent. This is not protected by a lock, it assumes all calls to Close() are made by the same thread.

Definition at line 283 of file exec-node.h.

Referenced by Close(), impala::PartitionedHashJoinNode::Partition::Close(), and is_closed().

int64_t impala::ExecNode::limit_

protected

Definition at line 222 of file exec-node.h.

Referenced by impala::SortNode::GetNext(), impala::HdfsScanNode::GetNextInternal(), impala::ExchangeNode::GetNextMerging(), impala::TopNNode::InsertTupleRow(), impala::HdfsScanNode::limit(), limit(), impala::TopNNode::Open(), and ReachedLimit().

boost::scoped_ptr<MemTracker> impala::ExecNode::mem_tracker_

protected

Account for peak memory used by this node.

Definition at line 230 of file exec-node.h.

Referenced by mem_tracker(), and Prepare().

int64_t impala::ExecNode::num_rows_returned_

protected

ObjectPool* impala::ExecNode::pool_

protected

Definition at line 211 of file exec-node.h.

Referenced by impala::SortNode::Init(), impala::UnionNode::Init(), impala::TopNNode::Init(), impala::ExchangeNode::Init(), impala::HashJoinNode::Init(), impala::AggregationNode::Init(), Init(), impala::PartitionedHashJoinNode::Init(), impala::AnalyticEvalNode::Init(), impala::PartitionedAggregationNode::Init(), InitRuntimeProfile(), impala::HdfsScanNode::Open(), impala::PartitionedHashJoinNode::Prepare(), and impala::PartitionedHashJoinNode::ProcessBuildInput().

RowDescriptor impala::ExecNode::row_descriptor_

protected

Definition at line 215 of file exec-node.h.

Referenced by impala::SortNode::Open(), impala::SortNode::Prepare(), impala::TopNNode::Prepare(), impala::ExchangeNode::Prepare(), and row_desc().

const string impala::ExecNode::ROW_THROUGHPUT_COUNTER = "RowsReturnedRate"

static

Names of counters shared by all exec nodes.

Definition at line 169 of file exec-node.h.

Referenced by Prepare().

RuntimeProfile::Counter* impala::ExecNode::rows_returned_rate_

protected

Definition at line 227 of file exec-node.h.

Referenced by Prepare().

std::string impala::ExecNode::runtime_exec_options_

protected

Definition at line 239 of file exec-node.h.

Referenced by AddRuntimeExecOption().

boost::scoped_ptr<RuntimeProfile> impala::ExecNode::runtime_profile_

protected

Definition at line 225 of file exec-node.h.

TPlanNodeType::type impala::ExecNode::type_

protected

Definition at line 210 of file exec-node.h.

Referenced by CollectNodes(), and type().

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

be/src/exec/exec-node.h
be/src/exec/exec-node.cc

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