软件架构师和开发者依靠自动化设计和构造工具，来快速地把业务需求转变成他们可以测试，验证，并部署的有形组件。

Software architects and developers rely on automated design and construction tools to rapidly transform business requirements into tangible components that they can test, validate, and deploy.

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如何通过停止与启动所有Hadoop组件、测试一些命令以及检查Web控制台来验证集群。

How to verify your cluster is working by stopping and starting all Hadoop components, testing a few commands, and reviewing the web console.

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例如，我通常使用DbUnit框架来帮助管理数据库，以便组件测试可验证依赖数据库数据的代码功能。

For example, I often employ the DbUnit framework to help manage a database so that my component tests can verify the functionality of code that relies on the database's data.

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