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data-consistency

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a364176773
a364176773 commented Feb 11, 2022

Why you need it?

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db/redis模式需串行更改事务状态,假设事务A在tm端进行决议提交,此时到达了tc端,而tc端刚好发现这个事务达到了超时,就会更改状态为超时回滚,而这两个动作是并行的,导致决议提交时删除了全局锁,又恰好被改为超时回滚,导致分支事务被回滚,回滚时可能会发现数据已经无法对上了(全局锁被删了)

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1.red

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