Crate re_chunk_store 

The Rerun chunk store, implemented on top of Apache Arrow using the arrow crate.

This crate is an in-memory time series database for Rerun log data. It is indexed by Entity path, component, timeline, and time. It supports out-of-order insertions, and fast O(log(N)) queries.

• See ChunkStore for an overview of the core data structures.
• See ChunkStore::latest_at_relevant_chunks and ChunkStore::range_relevant_chunks for the documentation of the public read APIs.
• See ChunkStore::insert_chunk for the documentation of the public write APIs.

Feature flags

• deadlock_detection — Enables parking_lot’s deadlock detection background thread.

Re-exports

pub use re_chunk::Chunk;

pub use re_chunk::ChunkId;

pub use re_chunk::ChunkShared;

pub use re_chunk::LatestAtQuery;

pub use re_chunk::RangeQuery;

pub use re_chunk::RangeQueryOptions;

pub use re_chunk::RowId;

pub use re_chunk::Span;

pub use re_chunk::UnitChunkShared;

pub use re_log_types::AbsoluteTimeRange;

pub use re_log_types::TimeInt;

pub use re_log_types::TimeType;

pub use re_log_types::Timeline;

Modules

external

Structs

ChunkCompactionReport

Reports which Chunks were merged into a new Chunk during a compaction.

ChunkStore

A complete chunk store: covers all timelines, all entities, everything.

ChunkStoreChunkStats

Stats about a collection of chunks.

ChunkStoreConfig

ChunkStoreDiff

Describes an atomic change in the Rerun ChunkStore: a chunk has been added or deleted.

ChunkStoreEvent

The atomic unit of change in the Rerun ChunkStore.

ChunkStoreGeneration

Incremented on each edit.

ChunkStoreHandle

A ref-counted, inner-mutable handle to a ChunkStore.

ChunkStoreStats

ChunkStoreSubscriberHandle

ColumnMetadata

ComponentColumnDescriptor

This is an ArrowField that contains specific meta-data.

GarbageCollectionOptions

IndexColumnDescriptor

Describes a time column, such as log_time.

QueryExpression

Describes a complete query for Rerun’s dataframe API.

ViewContentsSelector

The view contents specify which subset of the database (i.e., which columns) the query runs on.

Enums

ChunkStoreDiffKind

Is it an addition or a deletion?

ChunkStoreError

ColumnDescriptor

Describes any kind of column.

GarbageCollectionTarget

SparseFillStrategy

Specifies how null values should be filled in the returned dataframe.

StaticColumnSelection

Specifies whether static columns should be included in the query.

Traits

ChunkStoreSubscriber

A ChunkStoreSubscriber subscribes to atomic changes from all ChunkStores through ChunkStoreEvents.

PerStoreChunkSubscriber

A ChunkStoreSubscriber that is instantiated for each unique StoreId.

Type Aliases

ChunkStoreResult

Index

IndexRange

IndexValue