simzyoo opened a new issue, #7335:
URL: https://github.com/apache/incubator-seata/issues/7335

   您好,查阅了关于这两种模式锁机制的差别,有如下理解和问题想咨询下。
   
   
at模式有全局锁的机制来保证全局事务的读写隔离,这个全局锁是可重入的,也就是处于全局事务中,不同分支事务(串行)是可以修改同一个主键数据的。但是在xa模式下,并没有全局锁的概念,依赖的是db锁,且在二阶段才释放,这是否意味着,如果在同一个全局事务内,若不同的分支事务修改同一数据,是会阻塞的?


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