Struct CompactionConfig 

pub struct CompactionConfig {

    pub max_bytes_for_level_base: u64,
    pub max_level: u64,
    pub max_bytes_for_level_multiplier: u64,
    pub max_compaction_bytes: u64,
    pub sub_level_max_compaction_bytes: u64,
    pub level0_tier_compact_file_number: u64,
    pub compaction_mode: i32,
    pub compression_algorithm: Vec<String>,
    pub target_file_size_base: u64,
    pub compaction_filter_mask: u32,
    pub max_sub_compaction: u32,
    pub max_space_reclaim_bytes: u64,
    pub split_by_state_table: bool,
    pub split_weight_by_vnode: u32,
    pub level0_stop_write_threshold_sub_level_number: u64,
    pub level0_max_compact_file_number: u64,
    pub level0_sub_level_compact_level_count: u32,
    pub level0_overlapping_sub_level_compact_level_count: u32,
    pub tombstone_reclaim_ratio: u32,
    pub enable_emergency_picker: bool,
    pub max_l0_compact_level_count: Option<u32>,
    pub sst_allowed_trivial_move_min_size: Option<u64>,
    pub disable_auto_group_scheduling: Option<bool>,
    pub max_overlapping_level_size: Option<u64>,
    pub emergency_level0_sst_file_count: Option<u32>,
    pub emergency_level0_sub_level_partition: Option<u32>,
    pub level0_stop_write_threshold_max_sst_count: Option<u32>,
    pub level0_stop_write_threshold_max_size: Option<u64>,
    pub sst_allowed_trivial_move_max_count: Option<u32>,
    pub enable_optimize_l0_interval_selection: Option<bool>,
    pub vnode_aligned_level_size_threshold: Option<u64>,
}

Fields

max_bytes_for_level_base: u64

max_level: u64

max_bytes_for_level_multiplier: u64

max_compaction_bytes: u64

sub_level_max_compaction_bytes: u64

level0_tier_compact_file_number: u64

compaction_mode: i32

compression_algorithm: Vec<String>

target_file_size_base: u64

compaction_filter_mask: u32

max_sub_compaction: u32

max_space_reclaim_bytes: u64

split_by_state_table: bool

split_weight_by_vnode: u32

Compaction needs to cut the state table every time 1/weight of vnodes in the table have been processed.

level0_stop_write_threshold_sub_level_number: u64

soft limit for max number of sub level number

level0_max_compact_file_number: u64

level0_sub_level_compact_level_count: u32

level0_overlapping_sub_level_compact_level_count: u32

for tier compaction pick overlapping level

tombstone_reclaim_ratio: u32

enable_emergency_picker: bool

max_l0_compact_level_count: Option<u32>

The limitation of the level count of l0 compaction

sst_allowed_trivial_move_min_size: Option<u64>

The limitation of base level trivial move sst size

disable_auto_group_scheduling: Option<bool>

The limitation of auto group scheduling

max_overlapping_level_size: Option<u64>

The limitation of the max size of the overlapping-level for the compaction hummock will reorg the commit-sstables to the multi overlapping-level if the size of the commit-sstables is larger than max_overlapping_level_size

emergency_level0_sst_file_count: Option<u32>

The emergency compaction limitations for the level0 sstables file count

emergency_level0_sub_level_partition: Option<u32>

The emergency compaction limitations for the level0 sub level partition

level0_stop_write_threshold_max_sst_count: Option<u32>

The limitation of the max sst count of the level0 to trigger the write stop

level0_stop_write_threshold_max_size: Option<u64>

The limitation of the max sst size of the level0 to trigger the write stop

sst_allowed_trivial_move_max_count: Option<u32>

The limitation of the max sst count of the trivial move task

enable_optimize_l0_interval_selection: Option<bool>

Enable the optimization of the interval selection for the level0 compaction

vnode_aligned_level_size_threshold: Option<u64>

Enable strict one-vnode-per-SST for levels that meet the size threshold. Only effective when both conditions are met:

1. target_level > base_level (deeper levels only)
2. level.total_file_size >= this threshold

This prevents generating too many small SSTs when level size is small. Each SST will contain exactly one vnode, enabling precise query pruning.

Typical value: 50GB.

Implementations

impl CompactionConfig

pub fn compaction_mode(&self) -> CompactionMode

Returns the enum value of compaction_mode, or the default if the field is set to an invalid enum value.

pub fn set_compaction_mode(&mut self, value: CompactionMode)

Sets compaction_mode to the provided enum value.

pub fn max_l0_compact_level_count(&self) -> u32

Returns the value of max_l0_compact_level_count, or the default value if max_l0_compact_level_count is unset.

pub fn sst_allowed_trivial_move_min_size(&self) -> u64

Returns the value of sst_allowed_trivial_move_min_size, or the default value if sst_allowed_trivial_move_min_size is unset.

pub fn disable_auto_group_scheduling(&self) -> bool

Returns the value of disable_auto_group_scheduling, or the default value if disable_auto_group_scheduling is unset.

pub fn max_overlapping_level_size(&self) -> u64

Returns the value of max_overlapping_level_size, or the default value if max_overlapping_level_size is unset.

pub fn emergency_level0_sst_file_count(&self) -> u32

Returns the value of emergency_level0_sst_file_count, or the default value if emergency_level0_sst_file_count is unset.

pub fn emergency_level0_sub_level_partition(&self) -> u32

Returns the value of emergency_level0_sub_level_partition, or the default value if emergency_level0_sub_level_partition is unset.

pub fn level0_stop_write_threshold_max_sst_count(&self) -> u32

Returns the value of level0_stop_write_threshold_max_sst_count, or the default value if level0_stop_write_threshold_max_sst_count is unset.

pub fn level0_stop_write_threshold_max_size(&self) -> u64

Returns the value of level0_stop_write_threshold_max_size, or the default value if level0_stop_write_threshold_max_size is unset.

pub fn sst_allowed_trivial_move_max_count(&self) -> u32

Returns the value of sst_allowed_trivial_move_max_count, or the default value if sst_allowed_trivial_move_max_count is unset.

pub fn enable_optimize_l0_interval_selection(&self) -> bool

Returns the value of enable_optimize_l0_interval_selection, or the default value if enable_optimize_l0_interval_selection is unset.

pub fn vnode_aligned_level_size_threshold(&self) -> u64

Returns the value of vnode_aligned_level_size_threshold, or the default value if vnode_aligned_level_size_threshold is unset.

impl CompactionConfig

pub fn get_max_bytes_for_level_base(&self) -> u64

pub fn get_max_level(&self) -> u64

pub fn get_max_bytes_for_level_multiplier(&self) -> u64

pub fn get_max_compaction_bytes(&self) -> u64

pub fn get_sub_level_max_compaction_bytes(&self) -> u64

pub fn get_level0_tier_compact_file_number(&self) -> u64

pub fn get_compaction_mode(&self) -> Result<CompactionMode, PbFieldNotFound>

pub fn get_compression_algorithm(&self) -> &Vec<String>

pub fn get_target_file_size_base(&self) -> u64

pub fn get_compaction_filter_mask(&self) -> u32

pub fn get_max_sub_compaction(&self) -> u32

pub fn get_max_space_reclaim_bytes(&self) -> u64

pub fn get_split_by_state_table(&self) -> bool

pub fn get_split_weight_by_vnode(&self) -> u32

pub fn get_level0_stop_write_threshold_sub_level_number(&self) -> u64

pub fn get_level0_max_compact_file_number(&self) -> u64

pub fn get_level0_sub_level_compact_level_count(&self) -> u32

pub fn get_level0_overlapping_sub_level_compact_level_count(&self) -> u32

pub fn get_tombstone_reclaim_ratio(&self) -> u32

pub fn get_enable_emergency_picker(&self) -> bool

pub fn get_max_l0_compact_level_count(&self) -> Result<&u32, PbFieldNotFound>

pub fn get_sst_allowed_trivial_move_min_size( &self, ) -> Result<&u64, PbFieldNotFound>

pub fn get_disable_auto_group_scheduling( &self, ) -> Result<&bool, PbFieldNotFound>

pub fn get_max_overlapping_level_size(&self) -> Result<&u64, PbFieldNotFound>

pub fn get_emergency_level0_sst_file_count( &self, ) -> Result<&u32, PbFieldNotFound>

pub fn get_emergency_level0_sub_level_partition( &self, ) -> Result<&u32, PbFieldNotFound>

pub fn get_level0_stop_write_threshold_max_sst_count( &self, ) -> Result<&u32, PbFieldNotFound>

pub fn get_level0_stop_write_threshold_max_size( &self, ) -> Result<&u64, PbFieldNotFound>

pub fn get_sst_allowed_trivial_move_max_count( &self, ) -> Result<&u32, PbFieldNotFound>

pub fn get_enable_optimize_l0_interval_selection( &self, ) -> Result<&bool, PbFieldNotFound>

pub fn get_vnode_aligned_level_size_threshold( &self, ) -> Result<&u64, PbFieldNotFound>

Trait Implementations

impl Clone for CompactionConfig

fn clone(&self) -> CompactionConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CompactionConfig

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

Formats the value using the given formatter.

impl Default for CompactionConfig

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for CompactionConfig

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

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Message for CompactionConfig

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 CompactionConfig

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

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 CompactionConfig

impl StructuralPartialEq for CompactionConfig