#include <exchange-node.h>

Inheritance diagram for impala::ExchangeNode:

Collaboration diagram for impala::ExchangeNode:

Public Member Functions
	ExchangeNode (ObjectPool *pool, const TPlanNode &tnode, const DescriptorTbl &descs)

virtual Status	Init (const TPlanNode &tnode)

virtual Status	Prepare (RuntimeState *state)

virtual Status	Open (RuntimeState *state)
	Blocks until the first batch is available for consumption via GetNext(). More...

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

virtual Status	Reset (RuntimeState *state)

virtual void	Close (RuntimeState *state)

void	set_num_senders (int num_senders)

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...

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

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 Member Functions
Status	GetNextMerging (RuntimeState state, RowBatch output_batch, bool *eos)

Status	FillInputRowBatch (RuntimeState *state)

Private Attributes
int	num_senders_

boost::shared_ptr < DataStreamRecvr >	stream_recvr_

RowDescriptor	input_row_desc_
	our input rows are a prefix of the rows we produce More...

RowBatch *	input_batch_

int	next_row_idx_

RuntimeProfile::Counter *	convert_row_batch_timer_
	time spent reconstructing received rows More...

bool	is_merging_

SortExecExprs	sort_exec_exprs_
	Sort expressions and parameters passed to the merging receiver.. More...

std::vector< bool >	is_asc_order_

std::vector< bool >	nulls_first_

int64_t	offset_
	Offset specifying number of rows to skip. More...

int64_t	num_rows_skipped_
	Number of rows skipped so far. More...

Detailed Description

Receiver node for data streams. The data stream receiver is created in Prepare() and closed in Close(). is_merging is set to indicate that rows from different senders must be merged according to the sort parameters in sort_exec_exprs_. (It is assumed that the rows received from the senders themselves are sorted.) If is_merging_ is true, the exchange node creates a DataStreamRecvr with the is_merging_ flag and retrieves retrieves rows from the receiver via calls to DataStreamRecvr::GetNext(). It also prepares, opens and closes the ordering exprs in its SortExecExprs member that are used to compare rows. If is_merging_ is false, the exchange node directly retrieves batches from the row batch queue of the DataStreamRecvr via calls to DataStreamRecvr::GetBatch().

Definition at line 39 of file exchange-node.h.

Constructor & Destructor Documentation

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

Definition at line 34 of file exchange-node.cc.

References is_merging_, and offset_.

Member Function Documentation

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

protectedinherited

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

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

protectedinherited

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

References impala::ExecNode::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 )

inlineprotectedinherited

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 impala::ExecNode::expr_ctxs_to_free_.

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

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

protectedinherited

Appends option to 'runtime_exec_options_'.

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

References impala::RuntimeProfile::AddInfoString(), impala::ExecNode::exec_options_lock_, impala::ExecNode::runtime_exec_options_, and impala::ExecNode::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 )

inlineprotectedinherited

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

References impala::ExecNode::children_.

void ExchangeNode::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 from impala::ExecNode.

Definition at line 98 of file exchange-node.cc.

References impala::SortExecExprs::Close(), impala::ExecNode::Close(), impala::ExecNode::is_closed(), is_merging_, sort_exec_exprs_, and stream_recvr_.

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

staticinherited

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(), impala::ExecNode::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
	)

inherited

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 impala::ExecNode::children_, and impala::ExecNode::type_.

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

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

inherited

Collect all scan node types.

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

References impala::ExecNode::CollectNodes().

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

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

inlineinherited

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

References impala::ExecNode::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
	)

staticprotectedinherited

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 impala::ExecNode::CreateTreeHelper().

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

staticinherited

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 impala::ExecNode::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
	)

staticprotectedinherited

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

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

Referenced by impala::ExecNode::CreateTree().

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

protectedvirtual

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 from impala::ExecNode.

Definition at line 207 of file exchange-node.cc.

References impala::ExecNode::DebugString(), and num_senders_.

string impala::ExecNode::DebugString ( ) const

inherited

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(), DebugString(), impala::AggregationNode::DebugString(), impala::AnalyticEvalNode::DebugString(), impala::PartitionedAggregationNode::DebugString(), impala::BlockingJoinNode::DebugString(), and impala::PlanFragmentExecutor::Prepare().

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

staticinherited

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
	)

protectedinherited

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

MemTracker* impala::ExecNode::expr_mem_tracker ( )

inlineinherited

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

References impala::ExecNode::expr_mem_tracker_.

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

Status ExchangeNode::FillInputRowBatch ( RuntimeState * state )

private

Resets input_batch_ to the next batch from the from stream_recvr_'s queue. Only used when is_merging_ is false.

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

References impala::RuntimeState::fragment_instance_id(), input_batch_, is_merging_, impala::Status::IsCancelled(), SCOPED_TIMER, stream_recvr_, impala::RuntimeState::total_network_receive_timer(), and VLOG_FILE.

Referenced by GetNext(), and Open().

Status ExchangeNode::GetNext	(	RuntimeState *	state,
		RowBatch *	row_batch,
		bool *	eos
	)

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.

Implements impala::ExecNode.

Definition at line 120 of file exchange-node.cc.

References impala::RowBatch::AddRow(), impala::RowBatch::AtCapacity(), impala::RowBatch::capacity(), impala::RowBatch::ClearRow(), impala::RowBatch::CommitLastRow(), convert_row_batch_timer_, impala::RowBatch::CopyRow(), COUNTER_SET, impala::ExecNode::ExecDebugAction(), FillInputRowBatch(), GetNextMerging(), impala::RowBatch::GetRow(), input_batch_, is_merging_, impala::RowDescriptor::IsPrefixOf(), next_row_idx_, impala::ExecNode::num_rows_returned_, impala::Status::OK, impala::ExecNode::QueryMaintenance(), impala::ExecNode::ReachedLimit(), RETURN_IF_CANCELLED, RETURN_IF_ERROR, impala::RowBatch::row_desc(), impala::ExecNode::rows_returned_counter_, impala::ExecNode::runtime_profile_, SCOPED_TIMER, and stream_recvr_.

Status ExchangeNode::GetNextMerging	(	RuntimeState *	state,
		RowBatch *	output_batch,
		bool *	eos
	)

private

Implements GetNext() for the case where is_merging_ is true. Delegates the GetNext() call to the underlying DataStreamRecvr.

Definition at line 174 of file exchange-node.cc.

References impala::RowBatch::AtCapacity(), impala::RowBatch::CopyRows(), COUNTER_SET, impala::ExecNode::limit_, impala::RowBatch::num_rows(), impala::ExecNode::num_rows_returned_, num_rows_skipped_, offset_, impala::Status::OK, impala::ExecNode::ReachedLimit(), RETURN_IF_ERROR, impala::ExecNode::rows_returned_counter_, impala::RowBatch::set_num_rows(), and stream_recvr_.

Referenced by GetNext().

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

staticinherited

Extract node id from p->name().

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

References impala::RuntimeProfile::metadata().

int impala::ExecNode::id ( ) const

inlineinherited

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

References impala::ExecNode::id_.

Status ExchangeNode::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 from impala::ExecNode.

Definition at line 51 of file exchange-node.cc.

References impala::SortExecExprs::Init(), impala::ExecNode::Init(), is_asc_order_, is_merging_, nulls_first_, impala::Status::OK, impala::ExecNode::pool_, RETURN_IF_ERROR, and sort_exec_exprs_.

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

protectedinherited

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

References impala::ExecNode::id_, impala::ExecNode::pool_, and impala::ExecNode::runtime_profile_.

Referenced by impala::ExecNode::ExecNode().

bool impala::ExecNode::is_closed ( )

inlineprotectedinherited

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

References impala::ExecNode::is_closed_.

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

inlineprotectedvirtualinherited

Reimplemented in impala::ScanNode.

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

int64_t impala::ExecNode::limit ( ) const

inlineinherited

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

References impala::ExecNode::limit_.

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

MemTracker* impala::ExecNode::mem_tracker ( )

inlineinherited

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

References impala::ExecNode::mem_tracker_.

Status ExchangeNode::Open ( RuntimeState * state )

virtual

Blocks until the first batch is available for consumption via GetNext().

Reimplemented from impala::ExecNode.

Definition at line 77 of file exchange-node.cc.

References FillInputRowBatch(), is_asc_order_, is_merging_, impala::SortExecExprs::lhs_ordering_expr_ctxs(), nulls_first_, impala::Status::OK, impala::SortExecExprs::Open(), impala::ExecNode::Open(), RETURN_IF_ERROR, impala::SortExecExprs::rhs_ordering_expr_ctxs(), impala::ExecNode::runtime_profile_, SCOPED_TIMER, sort_exec_exprs_, and stream_recvr_.

Status ExchangeNode::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 from impala::ExecNode.

Definition at line 61 of file exchange-node.cc.

References ADD_TIMER, impala::ExecNode::AddExprCtxsToFree(), convert_row_batch_timer_, impala::DataStreamMgr::CreateRecvr(), impala::ExecNode::expr_mem_tracker(), impala::RuntimeState::fragment_instance_id(), impala::ExecEnv::GetInstance(), impala::ExecNode::id_, input_row_desc_, is_merging_, num_senders_, impala::Status::OK, impala::SortExecExprs::Prepare(), impala::ExecNode::Prepare(), RETURN_IF_ERROR, impala::ExecNode::row_descriptor_, impala::ExecNode::runtime_profile(), sort_exec_exprs_, impala::ExecEnv::stream_mgr(), and stream_recvr_.

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

protectedvirtualinherited

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(), impala::ExecNode::expr_ctxs_to_free_, and impala::ExprContext::FreeLocalAllocations().

bool impala::ExecNode::ReachedLimit ( )

inlineinherited

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

References impala::ExecNode::limit_, and impala::ExecNode::num_rows_returned_.

Status ExchangeNode::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 from impala::ExecNode.

Definition at line 93 of file exchange-node.cc.

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

inlineinherited

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

References impala::ExecNode::row_descriptor_.

int64_t impala::ExecNode::rows_returned ( ) const

inlineinherited

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

References impala::ExecNode::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 ( )

inlineinherited

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

References impala::ExecNode::runtime_profile_.

Referenced by impala::ExecNode::AddRuntimeExecOption(), impala::BlockingJoinNode::BuildSideThread(), impala::ExecNode::CreateTreeHelper(), impala::PartitionedAggregationNode::Partition::InitStreams(), impala::SortNode::Open(), impala::AnalyticEvalNode::Open(), impala::PartitionedAggregationNode::Open(), impala::HdfsScanNode::Open(), impala::HdfsTextScanner::Prepare(), impala::HBaseScanNode::Prepare(), impala::BaseSequenceScanner::Prepare(), Prepare(), impala::HdfsParquetScanner::Prepare(), impala::BlockingJoinNode::Prepare(), impala::HashJoinNode::Prepare(), impala::AggregationNode::Prepare(), impala::AnalyticEvalNode::Prepare(), impala::PartitionedHashJoinNode::Prepare(), impala::ExecNode::Prepare(), impala::ScanNode::Prepare(), impala::PlanFragmentExecutor::Prepare(), impala::PartitionedAggregationNode::Prepare(), impala::HdfsScanner::Prepare(), impala::HdfsScanNode::Prepare(), and impala::PartitionedHashJoinNode::ProcessBuildInput().

void impala::ExchangeNode::set_num_senders ( int num_senders )

inline

the number of senders needs to be set after the c'tor, because it's not recorded in TPlanNode, and before calling Prepare()

Definition at line 53 of file exchange-node.h.

References num_senders_.

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

staticinherited

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

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

References impala::ExecNode::children_, impala::ExecNode::debug_action_, impala::ExecNode::debug_phase_, and impala::ExecNode::id_.

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

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

inlineinherited

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

References impala::ExecNode::type_.

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

Member Data Documentation

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

protectedinherited

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

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

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

protectedinherited

Definition at line 212 of file exec-node.h.

Referenced by impala::ExecNode::Close(), impala::HashJoinNode::CodegenProcessProbeBatch(), impala::PartitionedHashJoinNode::CodegenProcessProbeBatch(), impala::ExecNode::conjunct_ctxs(), impala::SelectNode::CopyRows(), impala::UnionNode::EvalAndMaterializeExprs(), impala::HBaseScanNode::GetNext(), impala::HashJoinNode::GetNext(), impala::AggregationNode::GetNext(), impala::PartitionedAggregationNode::GetNext(), impala::AnalyticEvalNode::GetNextOutputBatch(), impala::TopNNode::Init(), impala::ExecNode::Init(), impala::PartitionedHashJoinNode::Init(), impala::ExecNode::Open(), impala::PartitionedHashJoinNode::OutputUnmatchedBuild(), impala::ExecNode::Prepare(), impala::CrossJoinNode::ProcessLeftChildBatch(), impala::HashJoinNode::ProcessProbeBatch(), and impala::PartitionedHashJoinNode::ProcessProbeBatch().

RuntimeProfile::Counter* impala::ExchangeNode::convert_row_batch_timer_

private

time spent reconstructing received rows

Definition at line 88 of file exchange-node.h.

Referenced by GetNext(), and Prepare().

TDebugAction::type impala::ExecNode::debug_action_

protectedinherited

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

Referenced by impala::ExecNode::ExecDebugAction(), and impala::ExecNode::SetDebugOptions().

TExecNodePhase::type impala::ExecNode::debug_phase_

protectedinherited

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 impala::ExecNode::ExecDebugAction(), and impala::ExecNode::SetDebugOptions().

boost::mutex impala::ExecNode::exec_options_lock_

protectedinherited

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 impala::ExecNode::AddRuntimeExecOption().

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

protectedinherited

MemTracker that should be used for ExprContexts.

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

Referenced by impala::ExecNode::expr_mem_tracker(), and impala::ExecNode::Prepare().

int impala::ExecNode::id_

protectedinherited

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

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

RowBatch* impala::ExchangeNode::input_batch_

private

Current batch of rows from the receiver queue being processed by this node. Only valid if is_merging_ is false. (If is_merging_ is true, GetNext() is delegated to the receiver). Owned by the stream receiver.

Definition at line 80 of file exchange-node.h.

Referenced by FillInputRowBatch(), and GetNext().

RowDescriptor impala::ExchangeNode::input_row_desc_

private

our input rows are a prefix of the rows we produce

Definition at line 75 of file exchange-node.h.

Referenced by Prepare().

std::vector<bool> impala::ExchangeNode::is_asc_order_

private

Definition at line 96 of file exchange-node.h.

Referenced by Init(), and Open().

bool impala::ExchangeNode::is_merging_

private

True if this is a merging exchange node. If true, GetNext() is delegated to the underlying stream_recvr_, and input_batch_ is not used/valid.

Definition at line 92 of file exchange-node.h.

Referenced by Close(), ExchangeNode(), FillInputRowBatch(), GetNext(), Init(), Open(), and Prepare().

int64_t impala::ExecNode::limit_

protectedinherited

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

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

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

protectedinherited

Account for peak memory used by this node.

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

Referenced by impala::ExecNode::mem_tracker(), and impala::ExecNode::Prepare().

int impala::ExchangeNode::next_row_idx_

private

Next row to copy from input_batch_. For non-merging exchanges, input_batch_ is retrieved directly from the sender queue in the stream recvr, and rows from input_batch_ must be copied to the output batch in GetNext().

Definition at line 85 of file exchange-node.h.

Referenced by GetNext().

std::vector<bool> impala::ExchangeNode::nulls_first_

private

Definition at line 97 of file exchange-node.h.

Referenced by Init(), and Open().

int64_t impala::ExecNode::num_rows_returned_

protectedinherited

int64_t impala::ExchangeNode::num_rows_skipped_

private

Number of rows skipped so far.

Definition at line 103 of file exchange-node.h.

Referenced by GetNextMerging().

int impala::ExchangeNode::num_senders_

private

Definition at line 67 of file exchange-node.h.

Referenced by DebugString(), Prepare(), and set_num_senders().

int64_t impala::ExchangeNode::offset_

private

Offset specifying number of rows to skip.

Definition at line 100 of file exchange-node.h.

Referenced by ExchangeNode(), and GetNextMerging().

ObjectPool* impala::ExecNode::pool_

protectedinherited

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

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

RowDescriptor impala::ExecNode::row_descriptor_

protectedinherited

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

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

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

staticinherited

Names of counters shared by all exec nodes.

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

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

RuntimeProfile::Counter* impala::ExecNode::rows_returned_counter_

protectedinherited

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

protectedinherited

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

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

std::string impala::ExecNode::runtime_exec_options_

protectedinherited

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

Referenced by impala::ExecNode::AddRuntimeExecOption().

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

protectedinherited

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

SortExecExprs impala::ExchangeNode::sort_exec_exprs_

private

Sort expressions and parameters passed to the merging receiver..

Definition at line 95 of file exchange-node.h.

Referenced by Close(), Init(), Open(), and Prepare().

boost::shared_ptr<DataStreamRecvr> impala::ExchangeNode::stream_recvr_

private

The underlying DataStreamRecvr instance. Ownership is shared between this exchange node instance and the DataStreamMgr used to create the receiver. stream_recvr_->Close() must be called before this instance is destroyed.

Definition at line 72 of file exchange-node.h.

Referenced by Close(), FillInputRowBatch(), GetNext(), GetNextMerging(), Open(), and Prepare().