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HeliosDB Full v8.0.0 Release Notes

HeliosDB Full v8.0.0 Release Notes

Release Date: 2026-04 Theme: Major version bump — workspace stabilization + v7.x feature roll-up

Highlights

v8.0.0 marks the major version bump. No breaking changes for SQL / wire protocols — the bump reflects workspace-level milestones: the clean acyclic dependency graph after the November 2025 storage / indexes cycle resolution, the consolidation of 184 individual crates into 28 logical groups (193 crates after orphan-activation), and the productization of the v7.1–v7.4 feature wave under a stable release header.

CHANGELOG note: the source CHANGELOG.md does not have a dedicated v8.0.0 entry (the most recent narrative entry is v7.4.0). v8.0.x is a roll-up release. See Full/CHANGELOG.md for per-feature detail and the v7.x release notes in this directory for theme-by-theme context.

What’s New

Workspace Stabilization

  • 193 crates across 28 consolidated logical groups (per Cargo.toml workspace comment block, November 2025 baseline; v7.4.0 added heliosdb-mcp to bring the count to 194 in some manifests, but the v8.0.0 ship target is 193 stable + MCP feature-gated).
  • Clean acyclic dependency graph — the November 2025 heliosdb-storage ⇄ heliosdb-indexes cycle is resolved (shared traits moved to heliosdb-common/src/storage_traits.rs).
  • Phase 2 consolidation execution — 7 skeleton crates removed (graph-ml, spatial-temporal, multimodal, adaptive-learning, postgres, oracle, network-policy: total ~330 LOC of placeholders).
  • 27 orphaned crates activated (~81,000 LOC) — geospatial (11,357 LOC), quantum (6,624 LOC), ML / AI features, query advisor, auto-index advisor, RL-based cache, MAB load balancer, PITR, triggers — all previously not in the workspace.

v7.x Feature Roll-up Under Stable Header

The full v7.1–v7.4 feature wave ships under v8.0.0 release governance:

  • v7.1.0 — Quantum optimizer Tier-1 safe integration (RELEASE_NOTES_v7.1.0).
  • v7.2.0 — Feature exposure: 100+ SHOW commands, 16 REST admin endpoints, EXPLAIN 7 formats, 96+ Redis commands (RELEASE_NOTES_v7.2.0).
  • v7.3.0 / v7.3.1 / v7.3.23 — WordPress / MySQL compatibility, AI-native Redis (134+), MongoDB AI commands, S3-compatible HTTP gateway, DDL + data persistence hardening (RELEASE_NOTES_v7.3.0).
  • v7.4.0 — RAG-native SQL surfaces (graph_traverse, hybrid_search), PREPARE COMPILED, heliosdb-mcp crate (RELEASE_NOTES_v7.4.0).

Production Readiness

  • 4,880+ unit tests passing across 28 parent crates.
  • 135/135 E2E SQL conformance.
  • 7/7 PostgreSQL benchmark wins vs PostgreSQL 16.11.
  • Zero unwrap / panic in production paths.
  • Production-readiness score: 9.0/10 per corrected internal report.

Migration

Drop-in upgrade from v7.4.x. No SQL or wire-protocol breaking changes. Operators can:

  1. Upgrade in place — wire-compatible with all v7.x clients.
  2. Continue using --config files unchanged.
  3. Optionally enable previously orphaned features via flags (e.g. --features research for quantum, GPU, genomics).

See v7.4.0 release notes for the detailed migration path from v7.3.x to the v7.4 / v8.0 baseline.

Known Issues

  • torch-sys 0.17.0 build failure in heliosdb-research/quantum on hosts with PyTorch 2.8.0. Workaround: LIBTORCH_BYPASS_VERSION_CHECK=1. Pre-existing; tracked separately.

Compatibility Matrix

ComponentVersion
Source revs coveredv7.1.x → v8.0.x
PostgreSQL wirev3
MySQL wirev10 (incl. caching_sha2_password)
MongoDB wirev6
Redis protocolRESP2 + RESP3, 134+ commands
CassandraCQL v3/v4/v5
OracleTNS / PL-SQL DML
MCP protocolspec 2024-11-05
Build (minimal)Rust 1.85+
Crate count193 (194 with heliosdb-mcp)

See CHANGELOG.md for full version history.