MDEV-38243 Write binlog row events for changes done by cascading FK o…#4911
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MDEV-38243 Write binlog row events for changes done by cascading FK o…#4911
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…perations This commit implements a feature which changes the handling of cascading foreign key operations to write the changes of cascading operations into binlog. The applying of such transaction, in the slave node, will apply just the binlog events, and does not execute the actual foreign key cascade operation. This will simplify the slave side replication applying and make it more predictable in terms of potential interference with other parallel applying happning in the node. This feature can be turned ON/OFF by new variable: rpl_use_binlog_events_for_fk_cascade, with default value OFF The actual implementation is largely by windsurf. The commit has also two mtr tests for testing rpl_use_binlog_events_for_fk_cascade feature: rpl.rpl_fk_cascade_binlog_row and rpl.rpl_fk_set_null_binlog_row
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…perations
This commit implements a feature which changes the handling of cascading foreign key operations to write the changes of cascading operations into binlog. The applying of such transaction, in the slave node, will apply just the binlog events, and does not execute the actual foreign key cascade operation. This will simplify the slave side replication applying and make it more predictable in terms of potential interference with other parallel applying happening in the node.
This feature can be turned ON/OFF by new variable: rpl_use_binlog_events_for_fk_cascade, with default value OFF
The actual implementation is largely by windsurf.