If this option is enabled, gtid_executed and gtid_purged may be
initialized incorrectly in the following situations:
• The newest binary log was generated by MySQL 5.7.5 or older, and
gtid_mode was ON for some binary logs but OFF for the newest binary log.
• A SET GTID_PURGED statement was issued on a MySQL version
prior to 5.7.7, and the binary log that was active at the time of the SET
GTID_PURGED has not yet been purged.
If an incorrect GTID set is computed in either situation, it will remain incorrect
even if the server is later restarted, regardless of the value of this option.
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