Principle:Apache Paimon Catalog Setup for Ray
| Knowledge Sources | |
|---|---|
| Domains | Data_Lake, Distributed_Computing |
| Last Updated | 2026-02-07 00:00 GMT |
Overview
Mechanism for establishing catalog connections and table references in preparation for distributed Ray operations.
Description
Before performing distributed processing with Ray, a Paimon catalog connection must be established and a table reference obtained. This is identical to standard catalog initialization but specifically in the context of preparing for Ray-based distributed reads or writes. The table reference provides access to read builders and write builders that produce Ray-compatible outputs.
The setup involves two steps:
- Create a Catalog instance using CatalogFactory.create() with appropriate connection options
- Obtain a Table reference using catalog.get_table() with the fully qualified table identifier
Usage
Use this principle as the setup step before any Ray-based distributed operation on Paimon tables.
Theoretical Basis
The setup phase in distributed data processing follows the configure-then-execute pattern. Configuration (catalog + table reference) happens on the driver node, while execution (reading/writing) is distributed across workers.
This separation of concerns ensures that:
- Connection configuration is centralized and validated before distribution
- Table metadata (schema, partitions, statistics) is fetched once on the driver
- Worker tasks receive pre-validated references rather than raw configuration