Module manifest 

SuperTable Manifest and Snapshot Management

This module defines the structures for tracking table state and file inventory. The design follows Apache Iceberg’s snapshot-based model, where each snapshot represents an immutable, point-in-time view of the table.

Key Concepts

• Snapshot: A complete view of the table at a point in time
• Manifest List: A file listing all manifest files for a snapshot
• Manifest File: A file listing data files with their metadata
• Data File: An actual Parquet file containing table data

Immutability

Once committed, snapshots are immutable. Updates create new snapshots that reference both new and existing data files. This enables:

• Time travel (querying historical states)
• Atomic commits (all-or-nothing updates)
• Concurrent reads (readers see consistent snapshots)

Structs

DataFile

Metadata about a data or delete file.

ManifestEntry

An entry in a manifest file, representing a single data file.

ManifestFile

A manifest file contains a list of data files.

ManifestFileEntry

An entry in a manifest list, referencing a single manifest file.

ManifestList

A manifest list contains references to all manifest files for a snapshot.

Snapshot

A snapshot represents an immutable view of the table at a point in time.

SnapshotBuilder

Builder for constructing Snapshot instances.

Enums

FileContent

Type of content stored in a file.

FileFormat

Supported data file formats.

ManifestContent

The type of content in a manifest file.

ManifestEntryStatus

The status of a manifest entry.

Operation

The type of operation that created a snapshot.