一.错误日志

场景：多线程插入数据库，大概100个线程都在同一张表做插入。

### Error updating database.  Cause: com.mysql.cj.jdbc.exceptions.MySQLTransactionRollbackException: Deadlock found when trying to get lock; try restarting transaction
### The error may exist in URL [jar:file:/bk-product-server.jar!/BOOT-INF/lib/bk_product_server_dao-5.15.103-SNAPSHOT.jar!/com/bk/product/repository/granting/StrategyRunRespository.xml]
### The error may involve com.bk.product.repository.granting.StrategyRunRespository.addBatchStrategyRunData-Inline
### The error occurred while setting parameters
### SQL: insert into granting_strategy_run_result         (         id, granting_strategy_run_id, biz_id,         biz_source, model_id, model_type,         model_name, model_query_item, model_sort,         granting_status, result_info, credit_investigation_id,         sn, credit_amount, tags,         del_flag, create_by, create_date,         update_by, update_date, client_id         )         values                        (             ?, ?, ?,             ?, ?, ?,             ?, ?,             ?,             ?, ?,             ?,             ?, ?, ?,             ?, ?, now(),             ?, now(), ?             )          ,              (             ?, ?, ?,             ?, ?, ?,             ?, ?,             ?,             ?, ?,             ?,             ?, ?, ?,             ?, ?, now(),             ?, now(), ?             )          ,              (             ?, ?, ?,             ?, ?, ?,             ?, ?,             ?,             ?, ?,             ?,             ?, ?, ?,             ?, ?, now(),             ?, now(), ?             )          ,              (             ?, ?, ?,             ?, ?, ?,             ?, ?,             ?,             ?, ?,             ?,             ?, ?, ?,             ?, ?, now(),             ?, now(), ?             )
### Cause: com.mysql.cj.jdbc.exceptions.MySQLTransactionRollbackException: Deadlock found when trying to get lock; try restarting transaction
; Deadlock found when trying to get lock; try restarting transaction; nested exception is com.mysql.cj.jdbc.exceptions.MySQLTransactionRollbackException: Deadlock found when trying to get lock; try restarting transaction
    at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:271)
    at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72)
    at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:88)
    at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:440)

View Code

二.分析

初步分析是由于100个线程在同一时间做100个事务提交，事务排队时间过长，重新发起事务，但是由于其他事务在做插入，查询，更新，锁定表，重新发起事务。导致死锁的发生。

目前还不能确定是事务的问题，还是代码的问题。

原因只是猜测,没有实际测试，等有时间详细测试

问题在于mysql插入是否会锁表，事务是否会锁表，什么情况下行的死锁会发生，表的死锁会发生

三.解决

暂时解决办法：插入表不用事务

四.参考资料

https://blog.csdn.net/weixin_33739627/article/details/85892433?utm_medium=distribute.pc_relevant_t0.none-task-blog-2%7Edefault%7EBlogCommendFromMachineLearnPai2%7Edefault-1.control&depth_1-utm_source=distribute.pc_relevant_t0.none-task-blog-2%7Edefault%7EBlogCommendFromMachineLearnPai2%7Edefault-1.control

http://www.heartthinkdo.com/?p=910#422

https://blog.csdn.net/weixin_33966095/article/details/92259789?utm_medium=distribute.pc_relevant.none-task-blog-2~default~baidujs_baidulandingword~default-1.control&spm=1001.2101.3001.4242

原文地址：https://www.cnblogs.com/Sigmund-Freud-01/p/15133969.html