impala::ReservoirSampleState< T > Struct Template Reference

Collaboration diagram for impala::ReservoirSampleState< T >:

Public Member Functions
int64_t	GetNext64 (int64_t max)

Public Attributes
ReservoirSample< T >	samples [NUM_SAMPLES]
int	num_samples
int64_t	source_size
ranlux64_3	rng

Detailed Description

template<typename T>
struct impala::ReservoirSampleState< T >

Definition at line 772 of file aggregate-functions.cc.

Member Function Documentation

template<typename T>

int64_t impala::ReservoirSampleState< T >::GetNext64 ( int64_t  max )

inline

Definition at line 785 of file aggregate-functions.cc.

References impala::ReservoirSampleState< T >::rng.

Referenced by impala::AggregateFunctions::ReservoirSampleUpdate().

Member Data Documentation

template<typename T>

int impala::ReservoirSampleState< T >::num_samples

Definition at line 776 of file aggregate-functions.cc.

Referenced by impala::AggregateFunctions::AppxMedianFinalize(), impala::AggregateFunctions::HistogramFinalize(), impala::AggregateFunctions::ReservoirSampleFinalize(), impala::AggregateFunctions::ReservoirSampleMerge(), impala::AggregateFunctions::ReservoirSampleSerialize(), and impala::AggregateFunctions::ReservoirSampleUpdate().

template<typename T>

ranlux64_3 impala::ReservoirSampleState< T >::rng

Definition at line 783 of file aggregate-functions.cc.

Referenced by impala::ReservoirSampleState< T >::GetNext64().

template<typename T>

ReservoirSample<T> impala::ReservoirSampleState< T >::samples[NUM_SAMPLES]

Definition at line 773 of file aggregate-functions.cc.

Referenced by impala::AggregateFunctions::AppxMedianFinalize(), impala::AggregateFunctions::HistogramFinalize(), impala::AggregateFunctions::ReservoirSampleFinalize(), impala::AggregateFunctions::ReservoirSampleMerge(), impala::AggregateFunctions::ReservoirSampleSerialize(), and impala::AggregateFunctions::ReservoirSampleUpdate().

template<typename T>

int64_t impala::ReservoirSampleState< T >::source_size

Definition at line 779 of file aggregate-functions.cc.

Referenced by impala::AggregateFunctions::ReservoirSampleMerge(), impala::AggregateFunctions::ReservoirSampleSerialize(), and impala::AggregateFunctions::ReservoirSampleUpdate().

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The documentation for this struct was generated from the following file:

• be/src/exprs/aggregate-functions.cc