MySQL Import SQL file error Error 2013 2006 2002

Importing SQL today always prompts for errors

The code is as follows:

ERROR 2013 (HY000): Lost connection to MySQL server during query

ERROR 2006 (HY000): MySQL server has gone away

No connection. Trying to reconnect ...

ERROR 2002 (HY000): Can ' t connect to the local MySQL server through socket '/var/lib/mysql/mysql.sock ' (111)

ERROR:

Can ' t connect to the server

Tried on the internet for a long time, various modification my.cnf, finally found that some people say that the INSERT statement is inserted too many rows at a time, the solution is to insert a row

Using Mysqldump to export and add parameters--skip-extended-insert

I'm not sure it's related to the MySQL version, my version is

MySQL Ver 14.14 distrib 5.1.73, for Redhat-linux-gnu (x86_64) using ReadLine 5.1

Finally solves the problem, although has not been able to understand why has this kind of phenomenon to appear, everybody has to know also please to sue, is appreciated