Struct Version 

pub struct Version {
    pub snapshot_id: i64,
    pub levels: HashMap<Level, Vec<DataFileMeta>>,
    pub schema: Arc<TableSchema>,
}

Immutable snapshot of the LSM state at one Iceberg snapshot.

• L0: files may overlap in key range. Sorted by seq_max descending (newest first) so that point lookups find the most recent version first.
• L1+: files are non-overlapping within each level. Sorted by key_min ascending for binary-search point lookup.

Fields

snapshot_id: i64

Iceberg snapshot ID that produced this version.

levels: HashMap<Level, Vec<DataFileMeta>>

Per-level file list. Keys: all levels that have files.

schema: Arc<TableSchema>

Table schema at this version.

Implementations

impl Version

pub fn empty(schema: Arc<TableSchema>) -> Self

Create an empty initial version (no files at any level).

pub fn files_at(&self, level: Level) -> &[DataFileMeta]

All files at a given level (empty slice if level has no files).

pub fn l0_file_count(&self) -> usize

Number of L0 files. Used for compaction scoring.

pub fn level_bytes(&self, level: Level) -> u64

Total bytes at a given level. Used for compaction scoring.

pub fn max_level(&self) -> Level

Maximum level that has files.

pub fn find_file_for_key( &self, level: Level, user_key_bytes: &[u8], ) -> Option<&DataFileMeta>

Find the L1+ file whose key range contains user_key_bytes. Returns None if no file at this level covers the key. Precondition: level >= 1 (files are non-overlapping, sorted by key_min).

pub fn total_files(&self) -> usize

Total number of files across all levels.

Trait Implementations

impl Clone for Version

fn clone(&self) -> Version

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Version

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

Formats the value using the given formatter.