Struct MergePolicyConfig 

pub struct MergePolicyConfig {
    pub min_num_segments: usize,
    pub min_layer_size: u32,
    pub level_log_size: f64,
}

Tunable parameters for the segment-merge policy.

The defaults match the Cluster 9 plan: minimum 8 segments per merge, level_log_size = 0.75 (tantivy default — restated explicitly so tests can assert the policy was set), and min_layer_size set to 100 documents.

Note on min_layer_size

Tantivy’s LogMergePolicy::min_layer_size is denominated in document count, not bytes. The Cluster 9 plan asked for “10 MiB” which has no direct mapping in tantivy 0.25; we substitute 100 documents as a conservative proxy. Operators can override via MergePolicyConfig::min_layer_size.

Fields

min_num_segments: usize

Minimum number of segments that may be merged together.

min_layer_size: u32

Minimum segment size (in documents) under which all segments are considered to belong to the same level.

level_log_size: f64

Ratio between two consecutive levels.

Implementations

impl MergePolicyConfig

pub fn to_tantivy(&self) -> LogMergePolicy

Build a tantivy LogMergePolicy from this configuration.

Trait Implementations

impl Clone for MergePolicyConfig

fn clone(&self) -> MergePolicyConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MergePolicyConfig

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

Formats the value using the given formatter.

impl Default for MergePolicyConfig

fn default() -> Self

Returns the “default value” for a type.