Flat namespace
A flat namespace is a naming system in which objects are addressed by unique identifiers without hierarchical organization.
Architecting an Apache Iceberg Lakehouse
A flat namespace addresses objects directly by unique keys without organizing them in nested directories.
- How it is used
- Explains how object storage organizes and retrieves large-scale lakehouse data without traditional directory hierarchies.
- How deep it goes
- Defines key-based addressing, metadata, scalability, and concurrent access, then connects the model to Iceberg commits.
- Examples
- Uses path-like object keys and Iceberg data and metadata files as concrete examples.
- What you can do after
- Operate object storage by addressing objects with unique keys and applying metadata-driven management policies.
Read how Architecting an Apache Iceberg Lakehouse explains flat namespace →
Authorization in Action
A flat namespace is a naming system without hierarchical structure in which identifiers are intended to avoid collisions across contexts.
- How it is used
- Supports identity naming across systems when identifiers must remain unique without depending on organizational hierarchy.
- How deep it goes
- Defines collision avoidance and explains governance trade-offs, without detailing a specific implementation procedure.
- Examples
- Uses UUIDs for customer accounts, Internet of Things devices, and service principals as enterprise identity examples.
- What you can do after
- Evaluate naming architectures by weighing collision resistance against discoverability, governance, and policy-administration costs.
Related concepts
- namespacekind of · A namespace is a naming context or identifier space in which names are defined and resolved, distinguishing them from names in other contexts.
- S3 APIimplemented by · The S3 API is an object-storage interface for storing, retrieving, and managing objects and buckets according to Amazon S3 conventions.
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