Struct Sample 

pub struct Sample {
    pub input: Option<Box<Relation>>,
    pub lower_bound: f64,
    pub upper_bound: f64,
    pub with_replacement: Option<bool>,
    pub seed: Option<i64>,
    pub deterministic_order: bool,
}

Relation of type Sample that samples a fraction of the dataset.

Fields

input: Option<Box<Relation>>

(Required) Input relation for a Sample.

lower_bound: f64

(Required) lower bound.

upper_bound: f64

(Required) upper bound.

with_replacement: Option<bool>

(Optional) Whether to sample with replacement.

seed: Option<i64>

(Optional) The random seed.

deterministic_order: bool

(Required) Explicitly sort the underlying plan to make the ordering deterministic or cache it. This flag is true when invoking dataframe.randomSplit to randomly splits DataFrame with the provided weights. Otherwise, it is false.

Implementations

impl Sample

pub fn with_replacement(&self) -> bool

Returns the value of with_replacement, or the default value if with_replacement is unset.

pub fn seed(&self) -> i64

Returns the value of seed, or the default value if seed is unset.

Trait Implementations

impl Clone for Sample

fn clone(&self) -> Sample

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Sample

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Sample

fn default() -> Self

Returns the “default value” for a type.

impl Message for Sample

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for Sample

fn eq(&self, other: &Sample) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Sample