windows本地机器配置hadoop

雨点打透心脏的1/2处 2023-09-29 09:44 24阅读 0赞

windows本地机器配置hadoop–API调用等等  
—可以解决部分基于本机API调用时的空指针异常和基于本地的其他hadoop相关的空指针异常的报错问题  
**1. 下载hadoop压缩包并解压到相应文件夹中—相当于安装路径，后面会用到**  
![在这里插入图片描述][20200702184359237.png]  
**2. 将hadoopBin.rar解压，并将所有文件复制到hadoop解压文件夹下面的bin目录里**  
解压后的hadoopBin  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpdHRsZV9zbG90aA_size_16_color_FFFFFF_t_70]  
复制后的：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpdHRsZV9zbG90aA_size_16_color_FFFFFF_t_70 1]

**3. 将hadoop.dll文件复制到C:WindowsSystem32 -----需要配置到系统文件中**  
需要复制文件  
![在这里插入图片描述][20200702184825904.png]  
粘贴位置：  
![在这里插入图片描述][20200702184848222.png]

**4. 配置hadoop环境变量**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpdHRsZV9zbG90aA_size_16_color_FFFFFF_t_70 2]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpdHRsZV9zbG90aA_size_16_color_FFFFFF_t_70 3]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpdHRsZV9zbG90aA_size_16_color_FFFFFF_t_70 4]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpdHRsZV9zbG90aA_size_16_color_FFFFFF_t_70 5]  
路径是：hadoop安装目录下的bin目录  
还需要新建一个hadoop\_home路径，按如下截图新建一个就好，路径同上  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpdHRsZV9zbG90aA_size_16_color_FFFFFF_t_70 6]

**5. 如需要使用用户名连接其他用户可执行此步骤-------增加ip映射，使得通过用户名可访问**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpdHRsZV9zbG90aA_size_16_color_FFFFFF_t_70 7]  
将需要连接的ip地址以及对应的用户名增加进去就可以了~  
需要通过管理员身份增加，保存时系统会提示~

**6. 验证配置结果**  
进入 cmd  
输入命令行：hadoop version ,出现如下结果表示配置成功  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpdHRsZV9zbG90aA_size_16_color_FFFFFF_t_70 8]

[20200702184359237.png]: https://img-blog.csdnimg.cn/20200702184359237.png
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[20200702184825904.png]: https://img-blog.csdnimg.cn/20200702184825904.png
[20200702184848222.png]: https://img-blog.csdnimg.cn/20200702184848222.png
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