# Yarn故障排除
本章节汇总了使用Yarn时遇到的常见故障及故障处理方法。
- **作业异常**
  - [使用Yarn客户端命令查询历史作业报错](https://support.huaweicloud.com/trouble-mrs/mrs_03_0723.html)
  
  - [集群启动Yarn后产生大量作业占用资源](https://support.huaweicloud.com/trouble-mrs/mrs_03_0027.html)
  
  - [MapReduce任务异常，临时文件未删除](https://support.huaweicloud.com/trouble-mrs/mrs_03_0298.html)
  
  - [通过客户端hadoop jar命令提交任务后返回"GC overhead"报错](https://support.huaweicloud.com/trouble-mrs/mrs_03_0141.html)
  
  - [Yarn客户端的端口信息错误导致提交任务后报错connection refused](https://support.huaweicloud.com/trouble-mrs/mrs_03_0306.html)
   
- **Yarn WebUI报错**
  - [通过Yarn WebUI查看队列信息时提示"ERROR 500"错误](https://support.huaweicloud.com/trouble-mrs/mrs_03_0718.html)
  
  - [通过Yarn WebUI查看作业日志时提示"ERROR 500"错误](https://support.huaweicloud.com/trouble-mrs/mrs_03_0741.html)
  
  - [通过Yarn WebUI查看作业日志时提示"Could not access logs page!"](https://support.huaweicloud.com/trouble-mrs/mrs_03_0714.html)
   
- **其他异常**
  - [Yarn汇聚日志过大导致节点磁盘被占满](https://support.huaweicloud.com/trouble-mrs/mrs_03_0230.html)
  
  - [TimelineServer目录文件数量到达上限](https://support.huaweicloud.com/trouble-mrs/mrs_03_0744.html)