morningman commented on a change in pull request #1819: Check file descriptor 
number should between configuration upon start
URL: https://github.com/apache/incubator-doris/pull/1819#discussion_r325169785
 
 

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 File path: docs/documentation/cn/installing/install-deploy.md
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 @@ -378,3 +378,9 @@ Broker 是无状态的进程,可以随意启停。当然,停止后,正在
        > 出现这个问题的主要原因是:当用户通过 `ADD BACKEND` 语句添加 BE 后,FE 会识别该语句中指定的是 hostname 还是 
IP。如果是 hostname,则 FE 会自动将其转换为 IP 地址并存储到元数据中。当 BE 在汇报任务完成信息时,会携带自己的 IP 地址。而如果 FE 
发现 BE 汇报的 IP 地址和元数据中不一致时,就会出现如上错误。  
     >
        > 这个错误的解决方法:1)分别在 FE 和 BE 设置 **priority\_network** 参数。通常 FE 和 BE 
都处于一个网段,所以该参数设置为相同即可。2)在 `ADD BACKEND` 语句中直接填写 BE 正确的 IP 地址而不是 hostname,以避免 FE 
获取到错误的 IP 地址。
+
+5. BE 进程文件句柄数
+
+    BE进程文件句柄数,受min_file_descriptor_number/max_file_descriptor_number两个参数控制。
 
 Review comment:
   You should state the default value of these 2 configurations here, And how 
to modify the `max open files`(eg. by using `ulimit`).
   Or user will not know what's going on and how to fix it.

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