Project Nessie

What it does

Access control

Nessie supports configurable authorization rules for operations such as listing references, reading entity values, and creating branches.checked 8 Oct 2026

Authentication

Nessie catalog configuration documents NONE, BEARER, OAUTH2, and AWS authentication types.checked 8 Oct 2026

Authorization scope

Nessie authorization controls metadata access; the documentation says a separate system is expected to control access to the data itself.checked 8 Oct 2026

Command-line tools

The Nessie CLI is a command-line interface and REPL.checked 8 Oct 2026

Community support

The project directs users to its Google Group and Zulip chat for contact and community discussion.checked 8 Oct 2026

Consistent changes

Nessie lets users prepare isolated data changes and apply them atomically so users do not see incomplete changes.checked 8 Oct 2026

Container architectures

The downloads page lists Docker images for amd64, arm64, ppc64le, and s390x.checked 8 Oct 2026

Data cleanup

The Nessie GC tool can mark and sweep data files according to flexible expiration policies.checked 8 Oct 2026

Data handling

Nessie versions lists of files associated with datasets and does not make copies of the underlying data.checked 8 Oct 2026

Deployment

Nessie can run as a Docker image or on Kubernetes.checked 8 Oct 2026

Integrations

The project documents using Nessie with Spark, Flink, Hive, and Trino through Iceberg.checked 8 Oct 2026

License and governance

Nessie is Apache-licensed and developed in an open-source, consensus-driven GitHub community.checked 8 Oct 2026

Purpose

Nessie is a transactional catalog for data lakes that uses Git-like semantics to version data.checked 8 Oct 2026

Repository migration

The Nessie Server Admin Tool supports exporting and importing a Nessie repository.checked 8 Oct 2026

Scale

The project says Nessie supports millions of tables and thousands of commits per second.checked 8 Oct 2026

Security

Nessie supports authentication using OpenID Connect bearer tokens, and its documentation describes authorization controls.checked 8 Oct 2026

Storage

The service has a pluggable storage backend, with packaged support for DynamoDB, Google BigTable, Cassandra, PostgreSQL, MariaDB, MySQL, and RocksDB local storage.checked 8 Oct 2026

Support and community

The project directs users to its Google Group and Zulip chat for contact and community support.checked 8 Oct 2026

Table format

Nessie works with Apache Iceberg tables.checked 8 Oct 2026

Transactions

Nessie provides cross-table transactions and visibility.checked 8 Oct 2026

Web UI

The documentation includes a Web UI for Nessie.checked 8 Oct 2026

What it does

Project Nessie is a transactional catalog for data lakes with Git-like semantics and data version control.checked 8 Oct 2026