How to contribute code for the first time

Hi all, I want to optimize a script in dev-support in a hadoop project, how do I submit a PR? I tried to create apply jira account so that I can create an issue in jira first, but the application was rejected. I was prompted to send a developer email first. Can anyone help me with this? Thanks!

第一次如何贡献代码

大家好，我想优化一个hadoop项目中dev-support中的脚本，我该如何提交一个PR？ 我尝试创建申请jira账号，好先在jira中创建一个issue，但是申请被拒绝了。提示我，先发送开发者邮件。 有人可以帮助我一下吗？谢谢！

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