Struct ColumnFamilyLogNumbers 

pub struct ColumnFamilyLogNumbers<'a> { /* private fields */ }

Which log each column family still needs replayed, handed to the filter once before any records are.

The borrow lasts for the callback only. The C API layer flattens RocksDB’s two std::maps into arrays on its own stack and frees them as soon as the callback returns, so nothing here can be kept.

Implementations

impl<'a> ColumnFamilyLogNumbers<'a>

pub fn log_numbers(&self) -> impl Iterator<Item = (u32, u64)> + '_

Every column family id paired with the log number it was last flushed at.

A record from a log older than a family’s number is already in an SST for that family, which is how a filter decides whether a record still matters.

pub fn log_number(&self, cf_id: u32) -> Option<u64>

The log number for one column family id.

pub fn names(&self) -> impl Iterator<Item = (&'a [u8], u32)> + '_

Every column family name paired with its id.

Column family handles are not open yet during recovery, so a name is all a filter has to go on. Names are raw bytes because RocksDB does not require them to be UTF-8.

pub fn id(&self, name: &[u8]) -> Option<u32>

The id of the column family with this name.