Hi.
We have Replica set, restarted it today, Replication lag was may be hours, but not like that:
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Hi @Seventh_Son
Looks like an error in the metrics data! as you’d probably realized at this point, you are safe to exclude spikes in the multi year range 
What version of MySQL generated these incorrect SBM values?
Consider using pt-heartbeat for a better measure of replication delay
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