jerryshao commented on code in PR #9678: URL: https://github.com/apache/gravitino/pull/9678#discussion_r2781109563
########## docs/lakehouse-generic-delta-table.md: ########## @@ -0,0 +1,390 @@ +--- +title: "Delta Lake table support" +slug: /delta-table-support +keywords: +- lakehouse +- delta +- delta lake +- metadata +- generic catalog +license: "This software is licensed under the Apache License version 2." +--- + +import Tabs from '@theme/Tabs'; +import TabItem from '@theme/TabItem'; + + +## Overview + +This document describes how to use Apache Gravitino to manage a generic lakehouse catalog using Delta Lake as the underlying table format. Gravitino supports registering and managing metadata for external Delta tables. + +:::info Current Support +Gravitino currently supports **external Delta tables only**. This means: +- You can register existing Delta tables in Gravitino +- Gravitino manages metadata only (schema, location, properties) +- The physical Delta table data remains independent +- Dropping tables from Gravitino does not delete the underlying Delta data +::: + +## Table Management + +### Supported Operations + +For Delta tables in a Generic Lakehouse Catalog, the following table summarizes supported operations: + +| Operation | Support Status | +|-----------|------------------------------------------------| +| List | ✅ Full | +| Load | ✅ Full | +| Alter | ❌ Not supported (use Delta Lake APIs directly) | +| Create | ✅ Register external tables only | +| Drop | ✅ Metadata only (data preserved) | +| Purge | ❌ Not supported for external tables | + Review Comment: Not a problem here. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
