Is the REST catalog the same as a nessie catalog in iceberg

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I'd like to use iceberg not from java (or python which apparently uses java). The API documentation of the client claims it supports REST catalogs. Is this the same as a nessie catalog?

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No, they are different. There are many Iceberg Catalogs you can use:

  • REST
  • Hive Metastore
  • Hadoop
  • Nessie
  • JDBC

REST is used as an example in the Iceberg website and Nessie is contributed by the Dremio team as an open source project.

However, functionally they are the same...

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Project Gravitino provide RESTful service for Iceberg Catalog, here is detail: https://datastrato.ai/blog/gravitino-iceberg-rest-catalog-service. About project gravitino, please refer: https://github.com/datastrato/gravitino