As of MySQL 8.0.16, the server performs all tasks previously handled by mysql_upgrade. Although upgrading remains a two-step operation, the server performs them both, resulting in a simpler process.
Because the server upgrades the Performance Schema, INFORMATION_SCHEMA, and the objects described in step 2 as of MySQL 8.0.16, mysql_upgrade is unneeded and is deprecated as of that version, and will be removed in a future MySQL version.
As of MySQL 8.0.16: Start the server with the --upgrade=NONE or --upgrade=MINIMAL option.
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