Enum RowGroupStrategy 

pub enum RowGroupStrategy {
    Auto,
    FixedRows,
    FixedMemory,
}

Parquet row group tuning strategy.

Controls how many rows Rivet places in each Parquet row group. Row group size affects memory usage during write, compression ratio, and downstream read performance (predicate pushdown, column skipping).

exports:
  - name: events
    parquet:
      row_group_strategy: auto          # compute from schema + target_row_group_mb
      target_row_group_mb: 128          # default target; auto + fixed_memory only
      max_row_group_mb: 256             # optional upper bound (all strategies)
      # row_group_strategy: fixed_rows  # exact row count
      # row_group_rows: 500000          # used with fixed_rows
      # row_group_strategy: fixed_memory  # same math as auto, made explicit

Variants

Auto

Compute rows-per-group from schema column types and target_row_group_mb. For narrow tables this produces large groups (efficient). For wide tables it reduces group size to stay within the memory target.

FixedRows

Use row_group_rows as a literal row count. Ignores memory targets.

FixedMemory

Identical math to auto, but the strategy label is explicit in logs.

Trait Implementations

impl Clone for RowGroupStrategy

fn clone(&self) -> RowGroupStrategy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for RowGroupStrategy

impl Debug for RowGroupStrategy

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

Formats the value using the given formatter.

impl Default for RowGroupStrategy

fn default() -> RowGroupStrategy

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for RowGroupStrategy

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for RowGroupStrategy

impl JsonSchema for RowGroupStrategy

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl PartialEq for RowGroupStrategy

fn eq(&self, other: &RowGroupStrategy) -> 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 RowGroupStrategy

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 RowGroupStrategy