Struct SSTableReaderConfig 

pub struct SSTableReaderConfig {
    pub read_buffer_size: usize,
    pub use_mmap: bool,
    pub mmap_min_size_bytes: usize,
    pub block_cache_size: usize,
    pub validate_checksums: bool,
    pub use_bloom_filter: bool,
    pub prefetch_size: usize,
}

Configuration for SSTable reader

Fields

read_buffer_size: usize

Size of the read buffer in bytes

use_mmap: bool

Whether to memory-map SSTable files instead of using buffered file I/O.

Opt-in; defaults to false. When enabled, files at or above Self::mmap_min_size_bytes are mapped into the address space and served from the OS page cache with no per-block read syscall. This mirrors Cassandra’s disk_access_mode: mmap and benefits repeated local scans of the same files. Enable only for immutable local SSTables — see crate::Config’s storage.use_mmap for the platform/filesystem constraints (network FS and external mutation can SIGBUS).

mmap_min_size_bytes: usize

Minimum file size (bytes) for memory mapping to kick in.

Files smaller than this use buffered I/O even when Self::use_mmap is set, since the per-file mapping overhead is not worthwhile for tiny files and mapping a zero-length file is invalid.

block_cache_size: usize

Maximum number of blocks to cache

validate_checksums: bool

Whether to validate checksums

use_bloom_filter: bool

Whether to use bloom filters

prefetch_size: usize

Prefetch size for sequential reads

Trait Implementations

impl Clone for SSTableReaderConfig

fn clone(&self) -> SSTableReaderConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SSTableReaderConfig

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

Formats the value using the given formatter.

impl Default for SSTableReaderConfig

fn default() -> Self

Returns the “default value” for a type.