MySQL 9.3 Release Notes
This section lists server variables, status variables, and options that were added for the first time, have been deprecated, or have been removed in MySQL 9.3.
The following system variables, status variables, and server options have been added in MySQL 9.3.
Com_alter_library: Count of ALTER LIBRARY statements. Added in MySQL 9.3.0.Com_show_library_status: Count of SHOW LIBRARY STATUS statements. Added in MySQL 9.3.0.Gr_latest_primary_election_by_most_uptodate_member_timestamp: Timestamp for most recent time when primary was elected using most-up-to-date selection. Added in MySQL 9.3.0.Gr_latest_primary_election_by_most_uptodate_members_trx_delta: Difference in number of transactions between new primary and secondary most up to date, when most-up-to-date primary selection was used. Added in MySQL 9.3.0.check-table-functions: How to proceed when scanning data dictionary for functions used in table constraints and other expressions, and such a function causes an error. Use WARN to log warnings; ABORT (default) also logs warnings, and halts any upgrade in progress. Added in MySQL 9.3.0.enable_secondary_engine_statistics: Whether hypergraph optimizer may fetch statistics from the secondary engine, if one is available. Added in MySQL 9.3.0.group_replication_elect_prefers_most_updated.enabled: ON if Group Replication primary election component is enabled, otherwise OFF. Added in MySQL 9.3.0.telemetry.otel_exporter_otlp_logs_network_namespace: Named network namespace when sending data to the logs endpoint. Added in MySQL 9.3.0.telemetry.otel_exporter_otlp_metrics_network_namespace: Named network namespace when sending data to the metrics endpoint. Added in MySQL 9.3.0.telemetry.otel_exporter_otlp_traces_network_namespace: Named network namespace when sending data to the trace endpoint. Added in MySQL 9.3.0.
No system variables, status variables, or server options have been deprecated in MySQL 9.3.
The following system variables, status variables, and options have been removed in MySQL 9.3.
innodb_log_file_size: Size of each log file in log group. Removed in MySQL 9.3.0.innodb_log_files_in_group: Number of InnoDB log files in log group. Removed in MySQL 9.3.0.innodb_undo_tablespaces: Number of tablespace files that rollback segments are divided between. Removed in MySQL 9.3.0.version_tokens_session: Client token list for Version Tokens. Removed in MySQL 9.3.0.version_tokens_session_number: For internal use. Removed in MySQL 9.3.0.