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MySQL InnoDB history_len too long
warning

Description MySQL history_len (undo log) too long on {{ $labels.instance }}
Query for 2m 
>>>
	
				
					
				
			
				
					 > 50000
Query Explanation

The alert triggers when the metric mysql_info_schema_innodb_metrics_transaction_trx_rseg_history_len—the length of InnoDB's undo‑log history (history_len) for a MySQL instance—exceeds 50,000. In that case the "MySQL InnoDB history_len too long" alert fires for the affected instance.

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