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PartitioningConfig

linkrs_query::optimizer::partitioning::config

Struct PartitioningConfig 

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pub struct PartitioningConfig {
    pub enabled: bool,
    pub min_rows_per_partition: u64,
    pub max_partitions: usize,
    pub vertex_id_range: Option<Range<i64>>,
    pub max_workers: usize,
    pub max_buffered_chunks: usize,
    pub fixed_overhead_rows: u64,
    pub per_partition_rows: u64,
    pub exchange_row_per_mille: u32,
}
Expand description

Static configuration for partition selection. The default is disabled so introducing the optimizer cannot change query results without an explicit self-proven layout source.

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§enabled: bool§min_rows_per_partition: u64§max_partitions: usize§vertex_id_range: Option<Range<i64>>

Fallback vertex ID range used when the storage cannot self-prove a domain. Ranges use i64 to match the real vertex ID type and avoid silent truncation of values >= 2^32.

§max_workers: usize

Maximum worker threads for intra-query parallelism. 1 means fully serial.

§max_buffered_chunks: usize

Maximum queued chunks per partition worker for backpressure.

§fixed_overhead_rows: u64

Parallel fixed startup overhead in row-equivalents (fragment startup, exchange coordination). All-zero cost params disable the economic gate and leave the row-count threshold as the only gate.

§per_partition_rows: u64

Per-partition fixed overhead in row-equivalents.

§exchange_row_per_mille: u32

Exchange cost per output row in row-equivalents, per mille (50 = 0.05 row-equivalents per row crossing the gather).

Trait Implementations§

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impl Clone for PartitioningConfig

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for PartitioningConfig

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

Formats the value using the given formatter. Read more
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impl Default for PartitioningConfig

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl Eq for PartitioningConfig

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impl PartialEq for PartitioningConfig

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl StructuralPartialEq for PartitioningConfig

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