sql执行过程超有关问题分析

sql执行过程超问题分析

druid  timeout设置
mybatis timeout设置
spring  timeout设置
haproxy timeout设置
mycat timeout设置
mysql timeout设置
os  timeout设置

每一个过程都可能是导致原因。

   目前项目报这个异常，一层层排查，结果haproxy 设置一分钟超时。

   场景：

           //service 事务方法

             execute(){

               //业务操作超过一分钟

              //service.method()；

              //db操作，异常

          }

org.springframework.dao.RecoverableDataAccessException: 
### Error querying database.  Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet successfully received from the server was 63,211 milliseconds ago.  The last packet sent successfully to the server was 41 milliseconds ago.
### The error may exist in file [D:\workspace_test\img\imgService\target\classes\META-INF\sqlmap\templateMapper.xml]
### The error may involve com.artbulb.img.dao.impl.TemplateDAO.findBoxListByPhotoType-Inline
### The error occurred while setting parameters
### SQL: SELECT id, photo_url AS photoUrl   FROM tb_img_picture_box tpb   WHERE 1=1    and tpb.photo_type =?
### Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet successfully received from the server was 63,211 milliseconds ago.  The last packet sent successfully to the server was 41 milliseconds ago.
; SQL []; Communications link failure

The last packet successfully received from the server was 63,211 milliseconds ago.  The last packet sent successfully to the server was 41 milliseconds ago.; nested exception is com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet successfully received from the server was 63,211 milliseconds ago.  The last packet sent successfully to the server was 41 milliseconds ago.
	at org.springframework.jdbc.support.SQLExceptionSubclassTranslator.doTranslate(SQLExceptionSubclassTranslator.java:98)