hadoop报错之bug3---hadoop的output目录已经存在

曾经终败给现在 2023-06-15 09:54 4阅读 0赞

## 一:bug截图 ##

Output directory hdfs://server2:9000/wordcount/input already exists

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI2OTYzNDMz_size_16_color_FFFFFF_t_70][]

## 二:原因分析 ##

1:写了同一个参数

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI2OTYzNDMz_size_16_color_FFFFFF_t_70 1][]

2:还有可能就是该目录已经存在

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI2OTYzNDMz_size_16_color_FFFFFF_t_70 2][]

## 三:解决方案 ##

output目录必须不存在的,如果存在,需要删掉

1:使用hadoop命令行删除

hadoop fs -rm -r output

2:使用图形化删除

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI2OTYzNDMz_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/201911211945308.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI2OTYzNDMz,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI2OTYzNDMz_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20191121194539447.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI2OTYzNDMz,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI2OTYzNDMz_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20191121194603412.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI2OTYzNDMz,size_16,color_FFFFFF,t_70