pub(super) struct CorrectionV1<D> {
updates: BTreeMap<Timestamp, ConsolidatingVec<D>>,
since: Antichain<Timestamp>,
total_size: LengthAndCapacity,
metrics: SinkMetrics,
worker_metrics: SinkWorkerMetrics,
growth_dampener: usize,
}
Expand description
A collection holding persist_sink
updates.
The CorrectionV1
data structure is purpose-built for the persist_sink::write_batches
operator:
- It stores updates by time, to enable efficient separation between updates that should be written to a batch and updates whose time has not yet arrived.
- It eschews an interface for directly removing previously inserted updates. Instead, updates are removed by inserting them again, with negated diffs. Stored updates are continuously consolidated to give them opportunity to cancel each other out.
- It provides an interface for advancing all contained updates to a given frontier.
Fields§
§updates: BTreeMap<Timestamp, ConsolidatingVec<D>>
Stashed updates by time.
since: Antichain<Timestamp>
Frontier to which all update times are advanced.
total_size: LengthAndCapacity
Total length and capacity of vectors in updates
.
Tracked to maintain metrics.
metrics: SinkMetrics
Global persist sink metrics.
worker_metrics: SinkWorkerMetrics
Per-worker persist sink metrics.
growth_dampener: usize
Configuration for ConsolidatingVec
driving the growth rate down from doubling.
Implementations§
Source§impl<D> CorrectionV1<D>
impl<D> CorrectionV1<D>
Sourcepub fn new(
metrics: SinkMetrics,
worker_metrics: SinkWorkerMetrics,
growth_dampener: usize,
) -> Self
pub fn new( metrics: SinkMetrics, worker_metrics: SinkWorkerMetrics, growth_dampener: usize, ) -> Self
Construct a new CorrectionV1
instance.
Sourcefn update_metrics(&mut self, new_size: LengthAndCapacity)
fn update_metrics(&mut self, new_size: LengthAndCapacity)
Update persist sink metrics to the given new length and capacity.
Source§impl<D: Data> CorrectionV1<D>
impl<D: Data> CorrectionV1<D>
Sourcepub fn insert_negated(&mut self, updates: &mut Vec<(D, Timestamp, Diff)>)
pub fn insert_negated(&mut self, updates: &mut Vec<(D, Timestamp, Diff)>)
Insert a batch of updates, after negating their diffs.
Sourcefn insert_inner(&mut self, updates: &mut Vec<(D, Timestamp, Diff)>)
fn insert_inner(&mut self, updates: &mut Vec<(D, Timestamp, Diff)>)
Insert a batch of updates.
The given updates
must all have been advanced by self.since
.
Sourcepub fn updates_within<'a>(
&'a mut self,
lower: &Antichain<Timestamp>,
upper: &Antichain<Timestamp>,
) -> impl Iterator<Item = (D, Timestamp, Diff)> + ExactSizeIterator + use<'a, D>
pub fn updates_within<'a>( &'a mut self, lower: &Antichain<Timestamp>, upper: &Antichain<Timestamp>, ) -> impl Iterator<Item = (D, Timestamp, Diff)> + ExactSizeIterator + use<'a, D>
Consolidate and return updates within the given bounds.
§Panics
Panics if lower
is not less than or equal to upper
.
Sourcepub fn updates_before<'a>(
&'a mut self,
upper: &Antichain<Timestamp>,
) -> impl Iterator<Item = (D, Timestamp, Diff)> + ExactSizeIterator + use<'a, D>
pub fn updates_before<'a>( &'a mut self, upper: &Antichain<Timestamp>, ) -> impl Iterator<Item = (D, Timestamp, Diff)> + ExactSizeIterator + use<'a, D>
Consolidate and return updates before the given upper
.
Sourcefn consolidate<R>(&mut self, range: R) -> usizewhere
R: RangeBounds<Timestamp>,
fn consolidate<R>(&mut self, range: R) -> usizewhere
R: RangeBounds<Timestamp>,
Consolidate the updates at the times in the given range.
Returns the number of updates remaining in the range afterwards.
Sourcepub fn advance_since(&mut self, since: Antichain<Timestamp>)
pub fn advance_since(&mut self, since: Antichain<Timestamp>)
Advance the since frontier.
§Panics
Panics if the given since
is less than the current since frontier.
Sourcepub fn advance_by(&mut self, frontier: &Antichain<Timestamp>)
pub fn advance_by(&mut self, frontier: &Antichain<Timestamp>)
Advance all contained updates by the given frontier.
If the given frontier is empty, all remaining updates are discarded.
Sourcepub fn consolidate_at_since(&mut self)
pub fn consolidate_at_since(&mut self)
Consolidate all updates at the current since
.
Trait Implementations§
Auto Trait Implementations§
impl<D> Freeze for CorrectionV1<D>
impl<D> !RefUnwindSafe for CorrectionV1<D>
impl<D> Send for CorrectionV1<D>where
D: Send,
impl<D> Sync for CorrectionV1<D>where
D: Sync,
impl<D> Unpin for CorrectionV1<D>
impl<D> !UnwindSafe for CorrectionV1<D>
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