Struct ReadVersionState 

pub struct ReadVersionState<'a> {
    pub manifest: &'a Manifest,
    pub indices: &'a [IndexMetadata],
}

The version a transaction read, as the coverage derivation needs it.

An index covering every fragment live at this version holds every row compaction had copied into the base table by then, so it is caught up to that version’s compacted_sstables. That is the only proof available: nothing maps a compaction generation to the fragments its rows landed in.

read_version is fixed for the life of a transaction and survives rebase, so the credit a commit can prove is stable across attempts. The recorded result may still differ between attempts, because a rebased attempt sees a different head: other commits move the compacted generations and the positions already recorded.

Fields

manifest: &'a Manifest

indices: &'a [IndexMetadata]

Trait Implementations

impl<'a> Clone for ReadVersionState<'a>

fn clone(&self) -> ReadVersionState<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for ReadVersionState<'a>

impl<'a> Debug for ReadVersionState<'a>

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

Formats the value using the given formatter.