This variable was added in MySQL 8.0.22. 

• Error_log_buffered_events 

The number of events currently present in the Performance Schema error_log  table. As with Error_log_buffered_bytes , it is possible for the value to decrease. 

This variable was added in MySQL 8.0.22. 

• Error_log_expired_events 

The number of events discarded from the Performance Schema error_log  table to make room for new events. 

This variable was added in MySQL 8.0.22. 

• Error_log_latest_write 

The time of the last write to the Performance Schema error_log  table. 

This variable was added in MySQL 8.0.22. 

• Flush_commands 

The number of times the server flushes tables, whether because a user executed a FLUSH TABLES statement or due to internal server operation. It is also incremented by receipt of a COM_REFRESH packet. This is in contrast to Com_flush , which indicates how many FLUSH  statements have been executed, whether FLUSH TABLES , FLUSH LOGS , and so forth. 

• group_replication_primary_member 

Shows the primary member’s UUID when the group is operating in single-primary mode. If the group is operating in multi-primary mode, shows an empty string. 

The group_replication_primary_member  status variable is deprecated and is scheduled to be removed in a future version. 

• Handler_commit 

The number of internal COMMIT  statements. 

• Handler_delete 

The number of times that rows have been deleted from tables. 

• Handler_external_lock 

The server increments this variable for each call to its external_lock()  function, which generally occurs at the beginning and end of access to a table instance. There might be differences among storage engines. This variable can be used, for example, to discover for a statement that accesses a partitioned table how many partitions were pruned before locking occurred: Check how much the counter increased for the statement, subtract 2 (2 calls for the table itself), then divide by 2 to get the number of partitions locked. 

• Handler_mrr_init 

The number of times the server uses a storage engine’s own Multi-Range Read implementation for table access. 

