© XXX Page 1 of 15 rename 接口实现方案（已实现，选用方案二）© XXX Page 2 of 15 1. 2. 3. 4. 1. 2. 1. 3. 1. 2. 背景 方案调研 Chubaofs Juicefs 方案实现 方案一：chubaofs 方案二：事务方案 方案三：利用 KV 自带的分布式事务 Q&A 1 是否需要实现跨文件系统的 rename 操作？ 2. 在多客户端情况下，是否需要加锁来保证其原子性？ 3. rename 流程举例说明？ 例 1：rename A→B (A 存在，而 B 不存在) 例 2：rename A→C (A 存在，而 C 存在) 4. 当 2 个操作的 dentry 属于同一个 copyset 有什么不一样？ 背景 当前 curvefs 并没有实现 rename 接口，本文档是对 接口，本文档是对 rename 接口实现的调研及方案设计。 rename 操作，主要操作的是 dentry，如 rename /dir1/file1 /dir2/file2，主要有 2 个步骤：(1) 删除 file1 的 dentry，(2) 增加 file2 的 dentry（该 dentry 的 inodeid 等同 file1 的 inode id）。 关于 rename 接口的实现，主要调研了 chubaofs

Scene button to create a new 2D scene. With our new node, let's double click it and rename it to MainScene. This book is brought to you by Zenva - Enroll in our Godot Game Development Custom Node. This will open a window and we want to create the KinematicBody2D node. Rename the node to Player, then save it. This book is brought to you by Zenva - Enroll in our Godot system, find the Player_Idle image and drag that into the scene window to add that as a child node. Rename that node to Sprite. This book is brought to you by Zenva - Enroll in our Godot Game

Installation and usage 28 Chapter 10: Minifying CSS 30 Examples 30 Using gulp-clean-css and gulp-rename 30 Sass and Css - Preprocessing with Gulp 30 Chapter 11: Minifying HTML 32 Examples 32 Minify eets')). pipe($$.concat('app.css')). pipe($.dest('build/css')). pipe($$.cleanCss()). pipe($$.rename({ suffix: '.min' })). pipe($.dest('build/css')) } https://riptutorial.com/ 14 Note $ - > gulp pipe($$.concat('app.js')). pipe($.dest('build/js')). pipe($$.uglify()). pipe($$.rename({ suffix: '.min' })). pipe($.dest('build/js')) } Note $ - > gulp https://riptutorial

4 drop now also accepts index/columns keywords . . . . . . . . . . . . . . . . . . . 10 1.2.1.5 rename, reindex now also accept axis keyword . . . . . . . . . . . . . . . . . 10 1.2.1.6 CategoricalDtype objects now have a pipe method . . . . . . . . . . . . . . . . . . . . . 12 1.2.1.8 Categorical.rename_categories accepts a dict-like . . . . . . . . . . . . 13 1.2.1.9 Other Enhancements . . . . . functions are now methods . . . . . . . . . . . . . . . . . . . . . . . . . 140 1.10.1.2 Changes to rename . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142 1.10.1.3 Range Index .

删除文件：删除/A/C 删除目录：删除/A rename：rename /A/C到/B/E symbolic link： hardlink：生成一个hardlink /B/E，指向文件/A/C list：遍历/A目录 5.1.2 好处 5.1.2 问题 5.2 分片方式二：Inode按照inodeid进行分片，Dentry按照parentid进行分片 rename：rename /A/C到/B/E hardlink：生成一个hardlink inode; string name; }; 4.3 内存组织 inode和dentry的关系需要在内存中通过某种方式组织起来。 还需要额外考虑一下的hard link, symlink，rename的处理。 fastcfs的inode和dentry没有分开，两者在同一个结构体里面。这种方式如何应对硬链接？ 看了下fastcfs的实现，在硬链接这里是有问题的。 考虑inode和d 3、client给server1发送请求：parentid 100，查询parentid 为100的dentry记录。查询到 100 + C → 300，目录非空，不能删除。 rename：rename /A/C到/B/E 1、client给server0发送请求： parentid 0 + name "A"，查询"A"的inodeid为100© XXX Page 14 of 24

functions are now methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Changes to rename . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Range Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1282 pandas.Series.cat.rename_categories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1282 pandas.Series.cat.reorder_categories reindex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1579 pandas.Index.rename . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1580 pandas.Index.repeat

functions are now methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Changes to rename . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Range Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1285 pandas.Series.cat.rename_categories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1285 pandas.Series.cat.reorder_categories reindex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1583 pandas.Index.rename . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1583 pandas.Index.repeat

3]] Length: 2, closed: right, dtype: interval[int64] 1.5.3 DataFrame.rename now only accepts one positional argument DataFrame.rename() would previously accept positional arguments that would lead to ambiguous df.rename({0: 1}, {0: 2}) FutureWarning: ...Use named arguments to resolve ambiguity... 2 1 1 pandas 1.0.0 >>> df.rename({0: 1}, {0: 2}) Traceback (most recent call last): ... TypeError: rename() takes arguments are provided. pandas 0.25.x >>> df.rename({0: 1}, index={0: 2}) 0 1 1 >>> df.rename(mapper={0: 1}, index={0: 2}) 0 2 1 pandas 1.0.0 >>> df.rename({0: 1}, index={0: 2}) Traceback (most recent

create -n ENVNAME python=3.10 clone environment conda create --clone ENVNAME -n NEWENV rename environment conda rename -n ENVNAME NEWENVNAME delete environment by name conda remove -n ENVNAME --all list environment myenv but retain the environment: conda remove -n myenv --all --keep-env 4.3.14 conda rename Rename an existing environment. This command renames a conda environment via its name (-n/--name) or (-p/--prefix). The base environment and the currently-active environment cannot be renamed. usage: conda rename [-h] [-n ENVIRONMENT | -p PATH] [-f] [--json] [--console CONSOLE] [-v] [-q] [-d] [-y] destination

create -n ENVNAME python=3.10 clone environment conda create --clone ENVNAME -n NEWENV rename environment conda rename -n ENVNAME NEWENVNAME delete environment by name conda remove -n ENVNAME --all list environment myenv but retain the environment: conda remove -n myenv --all --keep-env 4.3.14 conda rename Rename an existing environment. This command renames a conda environment via its name (-n/--name) or (-p/--prefix). The base environment and the currently-active environment cannot be renamed. usage: conda rename [-h] [-n ENVIRONMENT | -p PATH] [-f] [--json] [--console CONSOLE] [-v] [-q] [-d] [-y] destination