Crate rerun::external::re_data_store

The Rerun datastore, 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 DataStore for an overview of the core data structures.
• See DataStore::latest_at and DataStore::range for the documentation of the public read APIs.
• See DataStore::insert_row for the documentation of the public write APIs.

Feature flags

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

Modules

• external

Structs

• DataStore
  A complete data store: covers all timelines, all entities, everything.
• DataStoreConfig
• DataStoreRowStats
• DataStoreStats
• EntityStats
• GarbageCollectionOptions
• LatestAtQuery
  A query at a given time, for a given timeline.
• RangeQuery
  A query over a time range, for a given timeline.
• ResolvedTimeRange
• StoreDiff
  Describes an atomic change in the Rerun DataStore: a row has been added or deleted.
• StoreEvent
  The atomic unit of change in the Rerun DataStore.
• StoreGeneration
  Incremented on each edit.
• StoreSubscriberHandle
• StreamReader
  Arrow Stream reader.
• TimeInt
  A 64-bit number describing either nanoseconds, sequence numbers or fully static data.
• Timeline
  A time frame/space, e.g. log_time or frame_nr, coupled with the type of time it keeps.

Enums

• GarbageCollectionTarget
• StoreDiffKind
  Is it an addition or a deletion?
• StreamState
  Encodes the stream’s status after each read.
• TimeType
  The type of a TimeInt or Timeline.
• WriteError

Traits

• ArrayExt
• StoreSubscriber
  A StoreSubscriber subscribes to atomic changes from all DataStores through StoreEvents.

Type Aliases

• WriteResult