安装配置单元后Hadoop（本地和主机目标不匹配）(Hadoop (local and host destination do not match) after installing hive)

 
 
 如果您有备份/源代码管理，则可以重新同步旧版本。 
 
 
 备份/搁置现有的内容，并将其保留在系统中。 然后，尝试仅替换项目文件，将源代码和数据保留在原位。 重新对项目进行更改，您将撤消损坏。 
 
 
 
 如果您没有源代码管理或备份，并且没有删除您的代码/数据，您可能仍然很幸运。 您必须从头开始重新创建项目文件，而不是上一个保存点，但您只需导入现有代码即可。 
 
 
 如果你没有任何这些，并且你删除了源代码，那么你就不走运了 
 
 
 无论如何，下一步是获取并使用源代码控制和/或开始自动备份代码。 每个人都会犯这样的错误，这就是源控制/备份存在的原因。 你必须使用它们。 

 
 
If you have backups/source control, you can re-sync your old version.
 
 
Back up/shelve what you have now, and leave it checked out/on your system. Then, try to replace just the project file(s), leaving your source code and data in-place. Re-do the changes to your project(s), and you will have undone the damage.
 
 
 
If you don't have source control or backups, and you didn't delete your code/data, you may still be in luck. You'll have to re-create your project files from scratch, rather than your last save point, but you can simply import your existing code.
 
 
If you don't have any of those, and you deleted the source, then you are out of luck
 
 
No matter what, your next step is to get and use source control and/or start doing automatic backups of your code. Everyone makes mistakes like this, and this is why source control/backups exist. You must use them.