#include <data-source-scan-node.h>

Inheritance diagram for impala::DataSourceScanNode:

Collaboration diagram for impala::DataSourceScanNode:

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

	~DataSourceScanNode ()

virtual Status	Prepare (RuntimeState *state)
	Load the data source library and create the ExternalDataSourceExecutor. More...

virtual Status	Open (RuntimeState *state)
	Open the data source and initialize the first row batch. More...

virtual Status	GetNext (RuntimeState state, RowBatch row_batch, bool *eos)
	Fill the next row batch, calls GetNext() on the external scanner. More...

virtual Status	Reset (RuntimeState *state)
	NYI. More...

virtual void	Close (RuntimeState *state)
	Close the scanner, and report errors. More...

void	SetScanRanges (const std::vector< TScanRangeParams > &scan_range_params)

virtual bool	IsScanNode () const

RuntimeProfile::Counter *	bytes_read_counter () const

RuntimeProfile::Counter *	rows_read_counter () const

RuntimeProfile::Counter *	read_timer () const

RuntimeProfile::Counter *	total_throughput_counter () const

RuntimeProfile::Counter *	per_read_thread_throughput_counter () const

RuntimeProfile::Counter *	materialize_tuple_timer () const

RuntimeProfile::Counter *	scan_ranges_complete_counter () const

RuntimeProfile::ThreadCounters *	scanner_thread_counters () const

RuntimeProfile::Counter &	active_scanner_thread_counter ()

RuntimeProfile::Counter *	average_scanner_thread_concurrency () const

virtual Status	Init (const TPlanNode &tnode)

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	BYTES_READ_COUNTER = "BytesRead"
	names of ScanNode common counters More...

static const std::string	ROWS_READ_COUNTER = "RowsRead"

static const std::string	TOTAL_HDFS_READ_TIMER = "TotalRawHdfsReadTime(*)"

static const std::string	TOTAL_HBASE_READ_TIMER = "TotalRawHBaseReadTime(*)"

static const std::string	TOTAL_THROUGHPUT_COUNTER = "TotalReadThroughput"

static const std::string	PER_READ_THREAD_THROUGHPUT_COUNTER

static const std::string	NUM_DISKS_ACCESSED_COUNTER = "NumDisksAccessed"

static const std::string	MATERIALIZE_TUPLE_TIMER = "MaterializeTupleTime(*)"

static const std::string	SCAN_RANGES_COMPLETE_COUNTER = "ScanRangesComplete"

static const std::string	SCANNER_THREAD_COUNTERS_PREFIX = "ScannerThreads"

static const std::string	SCANNER_THREAD_TOTAL_WALLCLOCK_TIME

static const std::string	AVERAGE_SCANNER_THREAD_CONCURRENCY

static const std::string	AVERAGE_HDFS_READ_THREAD_CONCURRENCY

static const std::string	NUM_SCANNER_THREADS_STARTED

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
	Write debug string of this into out. More...

ExecNode *	child (int i)

bool	is_closed ()

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
const std::vector < TScanRangeParams > *	scan_range_params_
	The scan ranges this scan node is responsible for. Not owned. More...

RuntimeProfile::Counter *	bytes_read_counter_

RuntimeProfile::TimeSeriesCounter *	bytes_read_timeseries_counter_
	Time series of the bytes_read_counter_. More...

RuntimeProfile::Counter *	rows_read_counter_
	rows/tuples read from the scanner (including those discarded by EvalConjucts()) More...

RuntimeProfile::Counter *	read_timer_

RuntimeProfile::Counter *	total_throughput_counter_
	Wall based aggregate read throughput [bytes/sec]. More...

RuntimeProfile::Counter *	per_read_thread_throughput_counter_
	Per thread read throughput [bytes/sec]. More...

RuntimeProfile::Counter *	num_disks_accessed_counter_

RuntimeProfile::Counter *	materialize_tuple_timer_

RuntimeProfile::Counter *	scan_ranges_complete_counter_

RuntimeProfile::ThreadCounters *	scanner_thread_counters_
	Aggregated scanner thread counters. More...

RuntimeProfile::Counter	active_scanner_thread_counter_
	The number of active scanner threads that are not blocked by IO. More...

RuntimeProfile::Counter *	average_scanner_thread_concurrency_

RuntimeProfile::Counter	active_hdfs_read_thread_counter_
	The number of active hdfs reading threads reading for this node. More...

RuntimeProfile::Counter *	average_hdfs_read_thread_concurrency_

RuntimeProfile::Counter *	num_scanner_threads_started_counter_

std::vector < RuntimeProfile::Counter * >	hdfs_read_thread_concurrency_bucket_

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	MaterializeNextRow (MemPool *mem_pool)
	Materializes the next row (next_row_idx_) into tuple_. More...

Status	GetNextInputBatch ()
	Gets the next batch from the data source, stored in input_batch_. More...

Status	ValidateRowBatchSize ()

bool	InputBatchHasNext ()
	True if input_batch_ has more rows. More...

Private Attributes
boost::scoped_ptr < ExternalDataSourceExecutor >	data_source_executor_
	Used to call the external data source. More...

const TDataSourceScanNode	data_src_node_
	Thrift structure describing the data source scan node. More...

const TupleDescriptor *	tuple_desc_
	Descriptor of tuples read. More...

int	tuple_idx_
	Tuple index in tuple row. More...

Tuple *	tuple_
	Current tuple. More...

std::vector< SlotDescriptor * >	materialized_slots_

std::string	scan_handle_
	The opaque handle returned by the data source for the scan. More...

boost::scoped_ptr < extdatasource::TGetNextResult >	input_batch_

int	num_rows_

size_t	next_row_idx_

std::vector< int >	cols_next_val_idx_

Detailed Description

Scan node for external data sources. The external data source jar is loaded in Prepare() (via an ExternalDataSourceExecutor), and then the data source is called to receive row batches when necessary. This node converts the rows stored in a thrift structure to RowBatches. The external data source is closed in Close().

Definition at line 38 of file data-source-scan-node.h.

Constructor & Destructor Documentation

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

Definition at line 62 of file data-source-scan-node.cc.

impala::DataSourceScanNode::~DataSourceScanNode ( )

Definition at line 71 of file data-source-scan-node.cc.

Member Function Documentation

RuntimeProfile::Counter& impala::ScanNode::active_scanner_thread_counter ( )

inlineinherited

Definition at line 113 of file scan-node.h.

References impala::ScanNode::active_scanner_thread_counter_.

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

protectedinherited

Referenced by impala::ExecNode::AddExprCtxsToFree(), impala::UnionNode::Prepare(), impala::SortNode::Prepare(), impala::TopNNode::Prepare(), impala::ExchangeNode::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().

RuntimeProfile::Counter* impala::ScanNode::average_scanner_thread_concurrency ( ) const

inlineinherited

Definition at line 116 of file scan-node.h.

References impala::ScanNode::average_scanner_thread_concurrency_.

RuntimeProfile::Counter* impala::ScanNode::bytes_read_counter ( ) const

inlineinherited

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

References impala::ScanNode::bytes_read_counter_.

Referenced by impala::HBaseTableScanner::GetFamily(), impala::HBaseTableScanner::GetQualifier(), impala::HBaseTableScanner::GetRowKey(), impala::HBaseTableScanner::GetValue(), impala::HdfsScanNode::Open(), 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 impala::DataSourceScanNode::Close ( RuntimeState * state )

virtual

Close the scanner, and report errors.

Reimplemented from impala::ExecNode.

Definition at line 349 of file data-source-scan-node.cc.

References impala::RuntimeState::LogError(), impala::Status::msg(), impala::Status::ok(), and SCOPED_TIMER.

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 impala::DataSourceScanNode::DebugString	(	int	indentation_level,
		std::stringstream *	out
	)		const

protectedvirtual

Write debug string of this into out.

Reimplemented from impala::ExecNode.

Definition at line 363 of file data-source-scan-node.cc.

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(), impala::ExchangeNode::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(), impala::ExchangeNode::Prepare(), impala::HashJoinNode::Prepare(), impala::AggregationNode::Prepare(), impala::PartitionedHashJoinNode::Prepare(), impala::AnalyticEvalNode::Prepare(), impala::ExecNode::Prepare(), impala::PartitionedAggregationNode::Prepare(), and impala::HdfsScanNode::Prepare().

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

virtual

Fill the next row batch, calls GetNext() on the external scanner.

Implements impala::ExecNode.

Definition at line 292 of file data-source-scan-node.cc.

References impala::RowBatch::AddRow(), impala::MemPool::Allocate(), impala::RowBatch::AtCapacity(), impala::RowBatch::CommitLastRow(), COUNTER_SET, impala::RowBatch::GetRow(), impala::RowBatch::MaxTupleBufferSize(), impala::OK, RETURN_IF_CANCELLED, RETURN_IF_ERROR, SCOPED_TIMER, impala::TupleRow::SetTuple(), and impala::RowBatch::tuple_data_pool().

Status impala::DataSourceScanNode::GetNextInputBatch ( )

private

Gets the next batch from the data source, stored in input_batch_.

Definition at line 144 of file data-source-scan-node.cc.

References cols_next_val_idx_, data_source_executor_, data_src_node_, input_batch_, InputBatchHasNext(), next_row_idx_, impala::Status::OK, RETURN_IF_ERROR, scan_handle_, ValidateRowBatchSize(), and VLOG_QUERY.

Referenced by Open().

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

virtualinherited

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 impala::ExecNode::conjunct_ctxs_, impala::Expr::CreateExprTrees(), impala::Status::OK, impala::ExecNode::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 )

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::DataSourceScanNode::InputBatchHasNext ( )

inlineprivate

True if input_batch_ has more rows.

Definition at line 115 of file data-source-scan-node.h.

References input_batch_, next_row_idx_, and num_rows_.

Referenced by GetNextInputBatch().

bool impala::ExecNode::is_closed ( )

inlineprotectedinherited

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

References impala::ExecNode::is_closed_.

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

inlinevirtualinherited

Reimplemented from impala::ExecNode.

Definition at line 93 of file scan-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().

RuntimeProfile::Counter* impala::ScanNode::materialize_tuple_timer ( ) const

inlineinherited

Definition at line 104 of file scan-node.h.

References impala::ScanNode::materialize_tuple_timer_.

Referenced by impala::HBaseScanNode::GetNext(), impala::HdfsSequenceScanner::ProcessDecompressedBlock(), impala::HdfsTextScanner::ProcessRange(), impala::HdfsAvroScanner::ProcessRange(), impala::HdfsSequenceScanner::ProcessRange(), impala::HdfsRCFileScanner::ProcessRange(), and impala::HdfsTextScanner::WriteFields().

Status impala::DataSourceScanNode::MaterializeNextRow ( MemPool * mem_pool )

private

Materializes the next row (next_row_idx_) into tuple_.

Definition at line 193 of file data-source-scan-node.cc.

References impala::MemPool::Allocate(), impala::TupleDescriptor::byte_size(), cols_next_val_idx_, impala::ERROR_INVALID_COL_DATA, impala::ERROR_INVALID_TIMESTAMP, impala::Tuple::GetSlot(), impala::Tuple::Init(), input_batch_, materialized_slots_, next_row_idx_, impala::SlotDescriptor::null_indicator_offset(), RETURN_IF_ERROR, impala::SetDecimalVal(), impala::Tuple::SetNull(), impala::TIMESTAMP_SIZE, tuple_, tuple_desc_, impala::SlotDescriptor::tuple_offset(), impala::ColumnType::type, impala::SlotDescriptor::type(), impala::TYPE_BIGINT, impala::TYPE_BOOLEAN, impala::TYPE_DECIMAL, impala::TYPE_DOUBLE, impala::TYPE_FLOAT, impala::TYPE_INT, impala::TYPE_SMALLINT, impala::TYPE_STRING, impala::TYPE_TIMESTAMP, and impala::TYPE_TINYINT.

MemTracker* impala::ExecNode::mem_tracker ( )

inlineinherited

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

References impala::ExecNode::mem_tracker_.

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

virtual

Open the data source and initialize the first row batch.

Reimplemented from impala::ExecNode.

Definition at line 92 of file data-source-scan-node.cc.

References impala::TableDescriptor::col_names(), impala::SlotDescriptor::col_pos(), data_source_executor_, data_src_node_, impala::RuntimeState::effective_user(), GetNextInputBatch(), materialized_slots_, impala::TableDescriptor::name(), impala::ExecNode::Open(), impala::RuntimeState::query_id(), RETURN_IF_CANCELLED, RETURN_IF_ERROR, impala::ExecNode::runtime_profile_, scan_handle_, SCOPED_TIMER, impala::TupleDescriptor::table_desc(), impala::ColumnType::ToThrift(), tuple_desc_, and impala::SlotDescriptor::type().

RuntimeProfile::Counter* impala::ScanNode::per_read_thread_throughput_counter ( ) const

inlineinherited

Definition at line 101 of file scan-node.h.

References impala::ScanNode::per_read_thread_throughput_counter_.

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

virtual

Load the data source library and create the ExternalDataSourceExecutor.

Reimplemented from impala::ScanNode.

Definition at line 74 of file data-source-scan-node.cc.

References cols_next_val_idx_, data_source_executor_, data_src_node_, impala::RuntimeState::desc_tbl(), impala::DescriptorTbl::GetTupleDescriptor(), impala::SlotDescriptor::is_materialized(), materialized_slots_, impala::Status::OK, impala::ScanNode::Prepare(), RETURN_IF_ERROR, impala::TupleDescriptor::slots(), and tuple_desc_.

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().

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 ( )

inlineinherited

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

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

RuntimeProfile::Counter* impala::ScanNode::read_timer ( ) const

inlineinherited

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

References impala::ScanNode::read_timer_.

Referenced by impala::HBaseTableScanner::Next(), and impala::HdfsScanNode::Open().

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

virtual

NYI.

Reimplemented from impala::ExecNode.

Definition at line 344 of file data-source-scan-node.cc.

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

inlineinherited

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

References impala::ExecNode::row_descriptor_.

RuntimeProfile::Counter* impala::ScanNode::rows_read_counter ( ) const

inlineinherited

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

References impala::ScanNode::rows_read_counter_.

Referenced by impala::HdfsParquetScanner::AssembleRows(), impala::HdfsTextScanner::FinishScanRange(), impala::HdfsSequenceScanner::ProcessDecompressedBlock(), impala::HdfsParquetScanner::ProcessFooter(), impala::HdfsTextScanner::ProcessRange(), impala::HdfsAvroScanner::ProcessRange(), impala::HdfsSequenceScanner::ProcessRange(), and impala::HdfsRCFileScanner::ProcessRange().

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_.

RuntimeProfile::Counter* impala::ScanNode::scan_ranges_complete_counter ( ) const

inlineinherited

Definition at line 107 of file scan-node.h.

References impala::ScanNode::scan_ranges_complete_counter_.

RuntimeProfile::ThreadCounters* impala::ScanNode::scanner_thread_counters ( ) const

inlineinherited

Definition at line 110 of file scan-node.h.

References impala::ScanNode::scanner_thread_counters_.

Referenced by impala::HBaseScanNode::GetNext(), and impala::HdfsScanNode::ScannerThread().

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().

void impala::ScanNode::SetScanRanges ( const std::vector< TScanRangeParams > & scan_range_params )

inlineinherited

This should be called before Prepare(), and the argument must be not destroyed until after Prepare().

Definition at line 89 of file scan-node.h.

References impala::ScanNode::scan_range_params_.

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

RuntimeProfile::Counter* impala::ScanNode::total_throughput_counter ( ) const

inlineinherited

Definition at line 98 of file scan-node.h.

References impala::ScanNode::total_throughput_counter_.

Referenced by impala::HBaseScanNode::Close(), and impala::HdfsScanNode::StopAndFinalizeCounters().

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().

Status impala::DataSourceScanNode::ValidateRowBatchSize ( )

private

Validate row_batch_ contains the correct number of columns and that columns contain the same number of rows.

Definition at line 124 of file data-source-scan-node.cc.

References impala::ERROR_MISMATCHED_COL_SIZES, impala::ERROR_NUM_COLUMNS, input_batch_, materialized_slots_, num_rows_, and impala::Status::OK.

Referenced by GetNextInputBatch().

Member Data Documentation

RuntimeProfile::Counter impala::ScanNode::active_hdfs_read_thread_counter_

protectedinherited

The number of active hdfs reading threads reading for this node.

Definition at line 164 of file scan-node.h.

Referenced by impala::HdfsScanNode::Close(), and impala::HdfsScanNode::Open().

RuntimeProfile::Counter impala::ScanNode::active_scanner_thread_counter_

protectedinherited

The number of active scanner threads that are not blocked by IO.

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

Referenced by impala::ScanNode::active_scanner_thread_counter(), impala::HdfsScanNode::Close(), impala::HdfsScanNode::EnoughMemoryForScannerThread(), impala::HdfsScanNode::Open(), impala::HdfsScanNode::ScannerThread(), and impala::HdfsScanNode::ThreadTokenAvailableCb().

const string impala::ScanNode::AVERAGE_HDFS_READ_THREAD_CONCURRENCY

staticinherited

Initial value:

=

"AverageHdfsReadThreadConcurrency"

Definition at line 133 of file scan-node.h.

Referenced by impala::HdfsScanNode::Open().

RuntimeProfile::Counter* impala::ScanNode::average_hdfs_read_thread_concurrency_

protectedinherited

Average number of active hdfs reading threads This should be created in Open and stopped when all the scanner threads are done.

Definition at line 168 of file scan-node.h.

Referenced by impala::HdfsScanNode::Open(), and impala::HdfsScanNode::StopAndFinalizeCounters().

const string impala::ScanNode::AVERAGE_SCANNER_THREAD_CONCURRENCY

staticinherited

Initial value:

=

"AverageScannerThreadConcurrency"

Definition at line 132 of file scan-node.h.

Referenced by impala::HdfsScanNode::Open().

RuntimeProfile::Counter* impala::ScanNode::average_scanner_thread_concurrency_

protectedinherited

Average number of active scanner threads This should be created in Open and stopped when all the scanner threads are done.

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

Referenced by impala::ScanNode::average_scanner_thread_concurrency(), impala::HdfsScanNode::Open(), and impala::HdfsScanNode::StopAndFinalizeCounters().

const string impala::ScanNode::BYTES_READ_COUNTER = "BytesRead"

staticinherited

names of ScanNode common counters

Definition at line 121 of file scan-node.h.

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

RuntimeProfile::Counter* impala::ScanNode::bytes_read_counter_

protectedinherited

Definition at line 140 of file scan-node.h.

Referenced by impala::ScanNode::bytes_read_counter(), impala::HdfsScanNode::Open(), and impala::ScanNode::Prepare().

RuntimeProfile::TimeSeriesCounter* impala::ScanNode::bytes_read_timeseries_counter_

protectedinherited

Time series of the bytes_read_counter_.

Definition at line 142 of file scan-node.h.

Referenced by impala::HBaseScanNode::Close(), impala::ScanNode::Prepare(), and impala::HdfsScanNode::StopAndFinalizeCounters().

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<int> impala::DataSourceScanNode::cols_next_val_idx_

private

The indexes of the next non-null value in the row batch, per column. Should always contain materialized_slots_.size() integers. All values are reset to 0 when getting the next row batch.

Definition at line 102 of file data-source-scan-node.h.

Referenced by GetNextInputBatch(), MaterializeNextRow(), and Prepare().

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().

boost::scoped_ptr<ExternalDataSourceExecutor> impala::DataSourceScanNode::data_source_executor_

private

Used to call the external data source.

Definition at line 65 of file data-source-scan-node.h.

Referenced by GetNextInputBatch(), Open(), and Prepare().

const TDataSourceScanNode impala::DataSourceScanNode::data_src_node_

private

Thrift structure describing the data source scan node.

Definition at line 68 of file data-source-scan-node.h.

Referenced by GetNextInputBatch(), Open(), 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().

std::vector<RuntimeProfile::Counter*> impala::ScanNode::hdfs_read_thread_concurrency_bucket_

protectedinherited

HDFS read thread concurrency bucket: bucket[i] refers to the number of sample taken where there are i concurrent hdfs read thread running

Definition at line 174 of file scan-node.h.

Referenced by impala::HdfsScanNode::Open(), and impala::HdfsScanNode::StopAndFinalizeCounters().

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(), impala::ExchangeNode::Prepare(), impala::PartitionedHashJoinNode::PrepareNextPartition(), impala::PartitionedHashJoinNode::ProcessBuildInput(), and impala::ExecNode::SetDebugOptions().

boost::scoped_ptr<extdatasource::TGetNextResult> impala::DataSourceScanNode::input_batch_

private

The current result from calling GetNext() on the data source. Contains the thrift representation of the rows.

Definition at line 89 of file data-source-scan-node.h.

Referenced by GetNextInputBatch(), InputBatchHasNext(), MaterializeNextRow(), and ValidateRowBatchSize().

int64_t impala::ExecNode::limit_

protectedinherited

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(), impala::ExecNode::limit(), impala::TopNNode::Open(), and impala::ExecNode::ReachedLimit().

const string impala::ScanNode::MATERIALIZE_TUPLE_TIMER = "MaterializeTupleTime(*)"

staticinherited

Definition at line 128 of file scan-node.h.

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

RuntimeProfile::Counter* impala::ScanNode::materialize_tuple_timer_

protectedinherited

Definition at line 151 of file scan-node.h.

Referenced by impala::ScanNode::materialize_tuple_timer(), and impala::ScanNode::Prepare().

std::vector<SlotDescriptor*> impala::DataSourceScanNode::materialized_slots_

private

Vector containing slot descriptors for all materialized slots. These descriptors are sorted in order of increasing col_pos. TODO: Refactor to base class. HdfsScanNode has this and other nodes could use it.

Definition at line 82 of file data-source-scan-node.h.

Referenced by MaterializeNextRow(), Open(), Prepare(), and ValidateRowBatchSize().

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().

size_t impala::DataSourceScanNode::next_row_idx_

private

The index of the next row in input_batch_, i.e. the index into TColumnData.is_null.

Definition at line 97 of file data-source-scan-node.h.

Referenced by GetNextInputBatch(), InputBatchHasNext(), and MaterializeNextRow().

const string impala::ScanNode::NUM_DISKS_ACCESSED_COUNTER = "NumDisksAccessed"

staticinherited

Definition at line 127 of file scan-node.h.

Referenced by impala::HdfsScanNode::Open().

RuntimeProfile::Counter* impala::ScanNode::num_disks_accessed_counter_

protectedinherited

Definition at line 150 of file scan-node.h.

Referenced by impala::HdfsScanNode::Open(), and impala::HdfsScanNode::StopAndFinalizeCounters().

int impala::DataSourceScanNode::num_rows_

private

The number of rows in input_batch_->rows. The data source should have set TRowBatch.num_rows, but we compute it just in case they haven't.

Definition at line 93 of file data-source-scan-node.h.

Referenced by InputBatchHasNext(), and ValidateRowBatchSize().

int64_t impala::ExecNode::num_rows_returned_

protectedinherited

const string impala::ScanNode::NUM_SCANNER_THREADS_STARTED

staticinherited

Initial value:

=

"NumScannerThreadsStarted"

Definition at line 134 of file scan-node.h.

Referenced by impala::HdfsScanNode::Open().

RuntimeProfile::Counter* impala::ScanNode::num_scanner_threads_started_counter_

protectedinherited

Definition at line 170 of file scan-node.h.

Referenced by impala::HdfsScanNode::Open(), and impala::HdfsScanNode::ThreadTokenAvailableCb().

const string impala::ScanNode::PER_READ_THREAD_THROUGHPUT_COUNTER

staticinherited

Initial value:

=

"PerReadThreadRawHdfsThroughput"

Definition at line 126 of file scan-node.h.

Referenced by impala::HdfsScanNode::Open().

RuntimeProfile::Counter* impala::ScanNode::per_read_thread_throughput_counter_

protectedinherited

Per thread read throughput [bytes/sec].

Definition at line 149 of file scan-node.h.

Referenced by impala::HdfsScanNode::Open(), and impala::ScanNode::per_read_thread_throughput_counter().

ObjectPool* impala::ExecNode::pool_

protectedinherited

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

RuntimeProfile::Counter* impala::ScanNode::read_timer_

protectedinherited

Definition at line 145 of file scan-node.h.

Referenced by impala::HdfsScanNode::Open(), impala::HBaseScanNode::Prepare(), and impala::ScanNode::read_timer().

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(), impala::ExchangeNode::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().

const string impala::ScanNode::ROWS_READ_COUNTER = "RowsRead"

staticinherited

Definition at line 122 of file scan-node.h.

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

RuntimeProfile::Counter* impala::ScanNode::rows_read_counter_

protectedinherited

rows/tuples read from the scanner (including those discarded by EvalConjucts())

Definition at line 144 of file scan-node.h.

Referenced by impala::HBaseScanNode::GetNext(), impala::ScanNode::Prepare(), and impala::ScanNode::rows_read_counter().

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.

std::string impala::DataSourceScanNode::scan_handle_

private

The opaque handle returned by the data source for the scan.

Definition at line 85 of file data-source-scan-node.h.

Referenced by GetNextInputBatch(), and Open().

const std::vector<TScanRangeParams>* impala::ScanNode::scan_range_params_

protectedinherited

The scan ranges this scan node is responsible for. Not owned.

Definition at line 138 of file scan-node.h.

Referenced by impala::HBaseScanNode::Prepare(), impala::HdfsScanNode::Prepare(), and impala::ScanNode::SetScanRanges().

const string impala::ScanNode::SCAN_RANGES_COMPLETE_COUNTER = "ScanRangesComplete"

staticinherited

Definition at line 129 of file scan-node.h.

Referenced by impala::HdfsScanNode::Open().

RuntimeProfile::Counter* impala::ScanNode::scan_ranges_complete_counter_

protectedinherited

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

Referenced by impala::HdfsScanNode::Open(), and impala::ScanNode::scan_ranges_complete_counter().

RuntimeProfile::ThreadCounters* impala::ScanNode::scanner_thread_counters_

protectedinherited

Aggregated scanner thread counters.

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

Referenced by impala::ScanNode::Prepare(), and impala::ScanNode::scanner_thread_counters().

const string impala::ScanNode::SCANNER_THREAD_COUNTERS_PREFIX = "ScannerThreads"

staticinherited

Definition at line 130 of file scan-node.h.

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

const string impala::ScanNode::SCANNER_THREAD_TOTAL_WALLCLOCK_TIME

staticinherited

Initial value:

=

"ScannerThreadsTotalWallClockTime"

Definition at line 131 of file scan-node.h.

Referenced by impala::HdfsTextScanner::Prepare(), and impala::ScanNode::Prepare().

const string impala::ScanNode::TOTAL_HBASE_READ_TIMER = "TotalRawHBaseReadTime(*)"

staticinherited

Definition at line 124 of file scan-node.h.

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

const string impala::ScanNode::TOTAL_HDFS_READ_TIMER = "TotalRawHdfsReadTime(*)"

staticinherited

Definition at line 123 of file scan-node.h.

Referenced by impala::HdfsScanNode::Open().

const string impala::ScanNode::TOTAL_THROUGHPUT_COUNTER = "TotalReadThroughput"

staticinherited

Definition at line 125 of file scan-node.h.

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

RuntimeProfile::Counter* impala::ScanNode::total_throughput_counter_

protectedinherited

Wall based aggregate read throughput [bytes/sec].

Definition at line 147 of file scan-node.h.

Referenced by impala::ScanNode::Prepare(), and impala::ScanNode::total_throughput_counter().

Tuple* impala::DataSourceScanNode::tuple_

private

Current tuple.

Definition at line 77 of file data-source-scan-node.h.

Referenced by MaterializeNextRow().

const TupleDescriptor* impala::DataSourceScanNode::tuple_desc_

private

Descriptor of tuples read.

Definition at line 71 of file data-source-scan-node.h.

Referenced by MaterializeNextRow(), Open(), and Prepare().

int impala::DataSourceScanNode::tuple_idx_

private

Tuple index in tuple row.

Definition at line 74 of file data-source-scan-node.h.

TPlanNodeType::type impala::ExecNode::type_

protectedinherited

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

Referenced by impala::ExecNode::CollectNodes(), and impala::ExecNode::type().

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

be/src/exec/data-source-scan-node.h
be/src/exec/data-source-scan-node.cc

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Member Functions

Static Protected Member Functions

Protected Attributes

rows/tuples read from the scanner (including those discarded by EvalConjucts())

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation

rows/tuples read from the scanner (including those discarded by EvalConjucts())