Lumenrack Vault is upgrading to 4.0

Every Vault service on your account moves from 3.x to Vault 4.0, a new major version, during one maintenance window.

Affected services

What to expect

Each service is upgraded in place with a rolling restart. Open connections are closed once and queries in flight at that moment fail once; the Lumenrack drivers reconnect and retry automatically, so most applications see a pause of under 60 seconds. Data, schemas, and service settings are not changed.

No action is required before or after the window. Services stay on 4.0 afterwards; there is no rollback to 3.x.

Read the upgrade guide →

What’s new in Vault 4.0

1. Token authentication is available in beta. Token authentication docs
2. Async inserts on by default for new services. Small inserts are batched automatically, which reduces write amplification for high-throughput workloads. Existing services keep their current setting; set async_insert = 0 on a new service to turn it off.
3. Skip indexes on JSON columns. Bloom filter, token, and ngram index types now apply to JSON columns, so granules that do not contain a queried JSON path are skipped instead of scanned.
4. Column statistics are generally available. Vault now creates minmax and uniq statistics for new columns automatically and builds them during merges, so the query planner can order filters and prune parts.
5. Materialized CTEs. A WITH clause referenced more than once in a query is evaluated once and stored in a temporary table instead of being recomputed.

Questions about the upgrade? Contact Lumenrack support.