MySQL 5.7 Release Notes
When used on a corrupted or otherwise damaged table, it is
possible for the REPAIR TABLE
statement to delete rows that cannot be recovered. However, any
such modifications of table data performed by this statement are
not replicated, which can cause source and replica to lose
synchronization. For this reason, in the event that a table on
the source becomes damaged and you use
REPAIR TABLE to repair it, you
should first stop replication (if it is still running) before
using REPAIR TABLE, then
afterward compare the source's and replica's copies of
the table and be prepared to correct any discrepancies manually,
before restarting replication.