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51CTO
4 年
MySQL 并发 replace into 导致 insert intention 与 gap lock 形成死锁
online ddl 不会导致死锁,两者最大的区别是 pt-osc 执行 DDL 时产生的主从延迟小,原因是 online ddl 是在主库执行完成后从库开始执行,因此天然存在延迟。 引言 本文介绍一个在 pt-osc 执行期间发生的死锁案例,其实之前的文章 并发 replace into 导致 supremum X 锁与插入 ...
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