jackye1995 commented on code in PR #6600: URL: https://github.com/apache/iceberg/pull/6600#discussion_r1153992212
########## docs/table-migration.md: ########## @@ -0,0 +1,89 @@ +--- +title: "Overview" +url: table-migration +menu: + main: + parent: "Migration" + weight: 100 +--- +<!-- + - Licensed to the Apache Software Foundation (ASF) under one or more + - contributor license agreements. See the NOTICE file distributed with + - this work for additional information regarding copyright ownership. + - The ASF licenses this file to You under the Apache License, Version 2.0 + - (the "License"); you may not use this file except in compliance with + - the License. You may obtain a copy of the License at + - + - http://www.apache.org/licenses/LICENSE-2.0 + - + - Unless required by applicable law or agreed to in writing, software + - distributed under the License is distributed on an "AS IS" BASIS, + - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + - See the License for the specific language governing permissions and + - limitations under the License. + --> +# Table Migration +Apache Iceberg supports converting existing tables in other formats to Iceberg tables. This section introduces the general concept of table migration, its approaches, and existing implementations in Iceberg. + +## Migration Approach +There are two primary methods for executing table migration: full data migration and in-place migration. In this doc, we will describe more about in-place migration. + +In-place migration preserves the existing data files while incorporating Iceberg metadata on top of them. +This method is not only faster but also eliminates the need for data duplication, making it more appropriate for production environments. + + + +Apache Iceberg primarily supports the in-place migration approach, which includes three important actions: `Snapshot Table`, `Migrate Table`, and `Add Files`. Review Comment: nit: remove "primaryly". Also `Snapshot Table`, `Migrate Table`, and `Add Files` should not be backquoted, but bold. -- 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] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
