[GitHub] [iceberg] jackye1995 commented on a diff in pull request #6723: Docs: Separate page for Branching and Tagging

["jackye1995 (via GitHub)" <gi...@apache.org>]

jackye1995 commented on code in PR #6723:
URL: https://github.com/apache/iceberg/pull/6723#discussion_r1142410505


##########
docs/branching-and-tagging.md:
##########
@@ -0,0 +1,194 @@
+---
+title: "Branching and Tagging"
+url: branching
+aliases:
+    - "tables/branching"
+menu:
+    main:
+        parent: Tables
+        weight: 0
+---
+
+<!--
+ - 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.
+ -->
+
+# Branching and Tagging
+
+## Overview
+
+Iceberg table metadata maintains a log of snapshots which represent the changes applied to a table. Snapshots are fundamental in Iceberg as they are the basis for reader isolation and time travel queries. For controlling metadata size and storage costs, Iceberg provides snapshot lifecycle management procedures such as [`expireSnapshots`](../../../javadoc/{{% icebergVersion %}}/org/apache/iceberg/Table.html#expireSnapshots--) for removing unused snapshots and no longer neccessary data files based on table snapshot retention properties.

Review Comment:
   nit: prefer to use newlines after each sentence of markdown to minimize line changes for future changes



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