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d613f03c20
Two transactions could binlog their completions in opposite to how it is done in Engine. That is is rare situations ROLLBACK in Engine of the dependency parent transaction could be scheduled by the transaction before its binlogging. That give a follower dependency child one get binlogged ahead of the parent. For fixing this bug its necessary to ensure the binlogging phase is always first one in the internal one-phase rollback protocol. The commit combines 1. a code polishing piece over a part of MDEV-21117 that made binlog handlerton always commit first in no-2pc cases and 2. the same rule now applies to the rollback. An added test demonstrates how the child could otherwise reach binlog before its parent. |
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