pre-commit | 易学教程

分布式事务——三阶段提交

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 在前文，我们介绍来了分布式事务，以及分布式事务的解决方案之一的二阶段提交。本文介绍分布式事务处理方案之一的三阶段提交协议。分布式事务分布式事务是指发生在多个数据节点之间的事务，分布式事务比单机事务要复杂的多。在分布式系统中，各个节点之间在是相互独立的，需要通过网络进行沟通和协调。由于存在事务机制，可以保证每个独立节点上的数据操作可以满足ACID。但是，相互独立的节点之间无法准确地知道其他节点的事务执行情况。所以从理论上来讲，两个节点的数据是无法达到一致的状态。如果想让分布式部署的多个节点中的数据保持一致性，那么就要保证在所有节点数据的写操作，要么全部都执行，要么全部都不执行。但是，一台机器在执行本地事务的时候无法知道其他机器中的本地事务的执行结果，所以它也就不知道本次事务到底应该commit还是rollback。所以，常规的解决办法就是引入一个"协调者"的组件来统一调度所有分布式节点的执行。为了解决这种分布式一致性问题，前人在性能和数据一致性的反反复复权衡过程中总结了许多典型的协议和算法。其中比较著名的有二阶提交协议（Two Phase Commitment Protocol）、三阶提交协议（Three Phase Commitment Protocol）和Paxos算法。针对分布式事务，是X

SVN Pre Commit Hooks

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问题 I am currently trying to extend our already existing (and working) pre commit batch file for committing to SVN. The first part blocks any commit that does not have comments and works as expected. The second part is an attmept to block users committing SUO files, however this is currently blocking all commits. My understanding of DOs scripting isn't great so I suspect it may be my usage of the FindStr? Can anyone help? "C:\Program Files\VisualSVN Server\bin\svnlook.exe" log -t %2 %1 | FindStr

Modify file before commit with pre-commit hook

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问题 I am trying to write a pre-commit hook that modify a line in my code but I do not know even from where to start. The problem is: I have a KEY public static final String APP_KEY = ""; //DELETE THE KEY BEFORE COMMIT!!! In order to avoid publishing the KEY to the repository I've think maybe git hooks are the thing we need instead of delete the key manually. I've take a look at Customizing git hooks but I do not know how to write the hook. Is there a way to before commit the changes, delete the

How can I run git pre-commit checks only on staged content?

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问题 Suppose git status gives this: # On branch X # Changes to be committed: # (use "git reset HEAD <file>..." to unstage) # # modified: file1.cc # modified: file1.h # modified: file1_test.cc # modified: SConscript # # Changes not staged for commit: # (use "git add <file>..." to update what will be committed) # (use "git checkout -- <file>..." to discard changes in working directory) # (commit or discard the untracked or modified content in submodules) # # modified: file1.cc # modified: tinyxml2

Testing what is about to be committed in a pre-commit hook

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问题 The internet is absolutely littered with incorrect and non-ideal answers to this question. This is unfortunate because you would think this would be a common thing you would want to do. The problem: When a pre-commit hook runs, the repository might not be clean. So if you naively run your tests, they will not be against what you're committing, but whatever dirt happens to be in your working tree. The obvious thing to do is to git stash --keep-index --include-untracked at the start of the pre

How does this pre-commit hook fix trailing whitespace?

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问题 What is going on in this pre-commit hook? I thought changing files would cause them to be restaged. #!/bin/sh # # A git hook script to find and fix trailing whitespace # in your commits. Bypass it with the --no-verify option # to git-commit # if git-rev-parse --verify HEAD >/dev/null 2>&1 ; then against=HEAD else # Initial commit: diff against an empty tree object against=4b825dc642cb6eb9a060e54bf8d69288fbee4904 fi # Find files with trailing whitespace for FILE in `exec git diff-index --check

Windows Pre-commit hook for comment length Subversion

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问题 I seem to be getting nowhere with this. Either searching the web for a script, etc. Anyone got a script that you can just edit the out-of-box pre-commit.tmpl in a Windows environment that requires x chars to be entered in for a comment on commit in Tortoise Subversion globally so that all members on the team are required whereas this requirement is pushed down to the clients from SVN server? I don't know the scripting language and this should be something pretty damn simple without me taking

client side pre-commit hooks in subversion

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问题 Is any way to setup pre-commit hooks on the client side with an svn client, for example through eclipse or a command line svn client ? 回答1: No. But you can alias your own script to svn, so it gets called every time you type svn . The script then calls actual svn. How about that? 回答2: Not sure if it's any help in your particular case, but TortoiseSVN (on Windows) supports client-side hooks. 来源： https://stackoverflow.com/questions/4798201/client-side-pre-commit-hooks-in-subversion

SVN pre-commit hook for avoiding changes to tags subdirectories

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问题 Is there anybody who has clear instructions on how to add a pre-commit hook that avoids changes to tags subdirectories? I already searched the internet quite a bit. I found this link: SVN::Hooks::DenyChanges , but I can't seem to compile things. 回答1: I don't have enough reputation to "comment" on Raim's answer above, but his worked great, with one exception, his grep pattern is wrong. I simply used the below as my pre-commit hook (I didn't have an existing one, you'd need to merge in that

(GitKraken) Pre-commit Failed Exit Code: 1

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问题 I'm using GitKraken (not sure if relevant) and as I'm trying to commit, I get this error message: And as I press the button "View Hook Output" I get the following: pre-commit husky > npm run -s precommit (node v8.9.4)[?25l npm > Running tasks for src/**/*.js \ yarn format git add (...lots of these two rows...) \ yarn format git add "yarn format" found some errors. Please fix them and try committing again. yarn run v1.6.0 $ prettier-standard './src/**/*.js' C:\mypath\myfile.js info[Visit [0