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Seata中 SelectForUpdateExecutor 可以先获取全局锁，再执行 sql吗？
2022-06-27 16:02:00 【阿里云问答】
Seata中这个 SelectForUpdateExecutor 可以先获取全局锁，再执行 sql语句不？ 目前这个地方获取不到全局锁，会一直进行回滚事务 
采纳答案1：
需要释放本地锁，否则会阻塞其他正常的事务。 先抢本地锁再拿全局锁，这是分布式事务下的读已提交隔离级别，这个forupdate不是拿锁，是检查锁。 因为拿到本地锁，全局锁如果没有别的事务占有，就是分布式事务下读已提交了，at的其他事务拿不到本地锁不可能拿到全局锁的。
此答案整理自钉钉群“3群-Seata 开源讨论群”
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