Crate re_chunk_store

The Rerun chunk store, implemented on top of Apache Arrow using the [arrow2] 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::UnitChunkShared;
• pub use re_log_encoding::decoder::VersionPolicy;
• pub use re_log_types::ResolvedTimeRange;
• pub use re_log_types::TimeInt;
• pub use re_log_types::TimeType;
• pub use re_log_types::Timeline;

Modules

• dataframe 🔒
  All the APIs used specifically for re_dataframe.
• drop_time_range 🔒
• events 🔒
• external
• gc 🔒
• query 🔒
• stats 🔒
• store 🔒
• subscribers 🔒
• writes 🔒

Structs

• 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
  Describes a data/component column, such as Position3D.
• ComponentColumnSelector
  Select a component based on its EntityPath and ComponentName.
• GarbageCollectionOptions
• QueryExpression
  Describes a complete query for Rerun’s dataframe API.
• TimeColumnDescriptor
  Describes a time column, such as log_time.
• TimeColumnSelector
  Select a time column.

Enums

• ChunkStoreDiffKind
  Is it an addition or a deletion?
• ChunkStoreError
• ColumnDescriptor
• ColumnSelector
  Describes a column selection to return as part of a query.
• GarbageCollectionTarget
• SparseFillStrategy
  Specifies how null values should be filled in the returned dataframe.

Traits

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

Type Aliases

• ChunkStoreResult
• Index
• IndexRange
• IndexValue
• ViewContentsSelector
  The view contents specify which subset of the database (i.e., which columns) the query runs on, expressed as a set of [EntityPath]s and their associated [ComponentName]s.