博客指出在特定环境（master+standby +4segment ，每段主机12个实例）下插入约2亿行数据到表时出现“Cannot assign requested address”错误。解决方案是向系统内核添加参数“net.ipv4.tcp_tw_reuse = 1”，还给出了参数说明参考链接。
Cannot assign requested address
environment:
- master+standby +4segment 12 instance per segment host
when insert into table about 200 million rows.It through out error like bellow:
solution
add the parameter to your system kernal:
net.ipv4.tcp_tw_reuse = 1
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