Crate timeseries_table_core 

Core engine for a log-structured time-series table format.

This crate provides the foundational pieces for timeseries-table-format.

Responsibilities (high level):

• A Delta-inspired, append-only metadata log with version-guard optimistic concurrency control (transaction_log).
• Strongly-typed table metadata that distinguishes time-series tables (with a [TimeIndexSpec]) from generic tables (metadata).
• A [TimeSeriesTable] abstraction that exposes a logical view over the log and segment metadata (table).
• RoaringBitmap-based coverage utilities for reasoning about which time buckets are present or missing (coverage).
• Filesystem utilities for managing on-disk layout (log directory, CURRENT pointer, segment paths, etc.) (storage).

Main layers (new paths):

• metadata: metadata model + schema/segment validation (no IO).
• table: the table::TimeSeriesTable user-facing abstraction.
• storage: storage backend + table-root IO utilities.
• coverage: bitmap-based coverage math and utilities.
• formats: format-specific helpers (currently Parquet).

Modules

coverage

In-memory coverage and gap analysis over a discrete bucket domain.

formats

Format-specific helpers.

metadata

Metadata layer.

storage

Filesystem layout and path utilities.

table

High-level time-series table abstraction.

transaction_log

Append-only metadata log and table state.