Nimtable

Nimtable is a lightweight control plane and observability platform for Apache Iceberg lakehouses. It provides a browser-based console and REST API to browse catalog metadata, inspect table layouts, run ad-hoc metadata queries, and orchestrate maintenance tasks delegated to compute engines.

Key Features

• Browser console to explore catalogs, schemas, tables, partitions, snapshots, and manifests
• REST API and optional Iceberg REST Catalog endpoint for query engines
• Run SQL from the browser for quick metadata inspection
• Visualizations of file and snapshot distribution to surface optimization opportunities
• Integrations to delegate compaction/maintenance to external engines (e.g., Spark, RisingWave)
• Docker Compose deployment and PostgreSQL metadata storage by default

(Feature details and deployment guidance documented in the project README and RisingWave docs). (github.com)

Use Cases

• Inspect and troubleshoot Iceberg table metadata, snapshots, and file layout to find optimization targets
• Operate and orchestrate compaction/maintenance jobs by delegating work to Spark, RisingWave, or other engines
• Provide a standards-compliant Iceberg REST Catalog endpoint for query engines and interactive exploration

Limitations and Considerations

• Fine-grained RBAC and advanced access-control features are listed as roadmap items and may be limited or absent in current releases
• Caching, some monitoring/analytics features, and advanced scheduling/compaction strategies are planned but may not be production-complete

(Roadmap and known feature gaps are described in the repository documentation). (github.com)

Nimtable is intended as a lightweight, developer-facing control plane to simplify catalog inspection and routine maintenance for Iceberg lakehouses. It is designed to be run alongside existing catalogs and compute engines and to provide a consolidated UI and REST API for metadata operations.