How to use after_rollback in MySQL semi-synchronous replication

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call flow

ha_rollback_low->(void) RUN_HOOK(transaction, after_rollback, (thd, all));->repl_semi_report_rollback->repl_semi_report_commit

description

The stub is set after database rollback. In binlog, there is often a rollback operation to roll back previous transactions. For rollback operations, add a rollback handler to binlog and copy binlog to slave. In the same sense as transaction commit, we need to wait for ACK from the library. In this sense, the operation of after_rollback is the same as after_commit, so the callback function calls the function after_commit.

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