Struct MaterializeNode

pub struct MaterializeNode {
    pub table_id: u32,
    pub column_orders: Vec<ColumnOrder>,
    pub table: Option<Table>,
    pub staging_table: Option<Table>,
    pub refresh_progress_table: Option<Table>,
}

A materialized view is regarded as a table. In addition, we also specify primary key to MV for efficient point lookup during update and deletion.

The node will be used for both create mv and create index.

• When creating mv, pk == distribution_key == column_orders.
• When creating index, column_orders will contain both arrange columns and pk columns, while distribution key will be arrange columns.

Fields

table_id: u32

column_orders: Vec<ColumnOrder>

Column indexes and orders of primary key.

table: Option<Table>

Primary materialized table that stores the final result data. Purpose: This is the main table that users query against. It contains the complete materialized view results with all columns from the SELECT clause. Schema: Matches the output schema of the materialized view query PK: Determined by the stream key of the materialized view Distribution: Hash distributed by primary key columns for parallel processing

staging_table: Option<Table>

Staging table for refreshable materialized views during refresh operations. Purpose: Temporary storage for collecting new/updated data during refresh. This allows atomic replacement of old data with refreshed data. Schema: Contains only the primary key columns from the main table (pk-only table) - All PK columns with same data types as main table - Same primary key definition as main table Usage: Active only during refresh operations, empty otherwise Lifecycle: Created -> populated during refresh -> merged with main table -> cleared

refresh_progress_table: Option<Table>

Progress tracking table for refreshable materialized views. Purpose: Tracks refresh operation progress per VirtualNode to enable fault-tolerant resumable refresh operations. Stores checkpoint information for recovery. Schema: Simplified variable-length schema (following backfill pattern): - vnode (i32): VirtualNode identifier (PK) - current_pos…: Current processing position (variable PK fields from upstream) - is_completed (bool): Whether this vnode has completed processing - processed_rows (i64): Number of rows processed so far in this vnode PK: vnode (allows efficient per-vnode progress lookup and updates) Distribution: Hash distributed by vnode for parallel progress tracking Usage: Persists across refresh operations for resumability Note: Stage info is now tracked in MaterializeExecutor memory for simplicity

Implementations

impl MaterializeNode

pub fn get_table_id(&self) -> u32

pub fn get_column_orders(&self) -> &Vec<ColumnOrder>

pub fn get_table(&self) -> Result<&Table, PbFieldNotFound>

pub fn get_staging_table(&self) -> Result<&Table, PbFieldNotFound>

pub fn get_refresh_progress_table(&self) -> Result<&Table, PbFieldNotFound>

impl MaterializeNode

pub fn dist_key_indices(&self) -> Vec<u32>

pub fn column_descs(&self) -> Vec<PbColumnDesc>

Trait Implementations

impl Clone for MaterializeNode

fn clone(&self) -> MaterializeNode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MaterializeNode

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

Formats the value using the given formatter.

impl Default for MaterializeNode

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for MaterializeNode

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

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Message for MaterializeNode

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 MaterializeNode

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

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

const 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 MaterializeNode

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

where S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for MaterializeNode