Struct TableWatermarks

pub struct TableWatermarks {
    pub epoch_watermarks: Vec<EpochNewWatermarks>,
    pub is_ascending: bool,
}

Table watermark is a lighter weight range delete introduced in https://github.com/risingwavelabs/risingwave/issues/13148 It means the lowest (or highest when is_ascending is false) visible keys in the table within a vnode. Keys lower (or higher) than the table watermark is invisible and will be cleaned in later compaction.

Fields

epoch_watermarks: Vec<EpochNewWatermarks>

Table watermarks of a state table from all vnodes written in multiple epochs. Epochs should be sorted in ascending order, which means earlier epoch at the front

is_ascending: bool

The direction of the table watermark.

Implementations

impl TableWatermarks

pub fn get_epoch_watermarks(&self) -> &Vec<EpochNewWatermarks>

pub fn get_is_ascending(&self) -> bool

Trait Implementations

impl Clone for TableWatermarks

fn clone(&self) -> TableWatermarks

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TableWatermarks

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

Formats the value using the given formatter.

impl Default for TableWatermarks

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for TableWatermarks

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Message for TableWatermarks

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 TableWatermarks

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for TableWatermarks

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for TableWatermarks

impl StructuralPartialEq for TableWatermarks