分布式调度框架。
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# How To Contribute
Start by forking the dolphinscheduler GitHub repository, make changes in a branch and then send a pull request.
## Set up your dolphinscheduler GitHub Repository
There are three branches in the remote repository currently:
- `master` : normal delivery branch. After the stable version is released, the code for the stable version branch is merged into the master branch.
- `dev` : daily development branch. The daily development branch, the newly submitted code can pull requests to this branch.
- `x.x.x-release` : the stable release version.
So, you should fork the `dev` branch.
After forking the [dolphinscheduler upstream source repository](https://github.com/apache/dolphinscheduler/fork) to your personal repository, you can set your personal development environment.
```sh
cd <your work direcotry>
git clone <your personal forked dolphinscheduler repo>
cd dolphinscheduler
```
## Set git remote as `upstream`
Add remote repository address, named upstream
```sh
git remote add upstream https://github.com/apache/dolphinscheduler.git
```
View repository:
```sh
git remote -v
```
There will be two repositories at this time: origin (your own warehouse) and upstream (remote repository)
Get/update remote repository code (already the latest code, skip it).
```sh
git fetch upstream
```
Synchronize remote repository code to local repository
```sh
git checkout origin/dev
git merge --no-ff upstream/dev
```
If remote branch has a new branch `dev-1.0`, you need to synchronize this branch to the local repository, then push to your own repository.
```sh
git checkout -b dev-1.0 upstream/dev-1.0
git push --set-upstream origin dev-1.0
```
## Create your feature branch
Before making code changes, make sure you create a separate branch for them.
```sh
git checkout -b <your-feature-branch> dev
```
## Commit changes
After modifying the code locally, submit it to your own repository:
```sh
git commit -m 'information about your feature'
```
## Push to the branch
Push your locally committed changes to the remote origin (your fork).
```sh
git push origin <your-feature-branch>
```
## Create a pull request
After submitting changes to your remote repository, you should click on the new pull request On the following github page.
<p align = "center">
<img src = "http://geek.analysys.cn/static/upload/221/2019-04-02/90f3abbf-70ef-4334-b8d6-9014c9cf4c7f.png" width ="60%"/>
</p>
Select the modified local branch and the branch to merge past to create a pull request.
<p align = "center">
<img src = "http://geek.analysys.cn/static/upload/221/2019-04-02/fe7eecfe-2720-4736-951b-b3387cf1ae41.png" width ="60%"/>
</p>
Next, the administrator is responsible for **merging** to complete the pull request.