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Re: Group Replication - how to find queries causing replication lag?
Posted by: Frederic Descamps
Date: March 03, 2021 04:20PM

Hi Aurélien,

There is no accurate answer to give you in this situation.
Some more details are needed:
- Are you using Single Primary ?
- Are you using the default EVENTUAL consistency ?
- What is the latency between nodes ?
- Does reducing the amount of members help ?
- How big is that number of trx ?
- Are you using parallel appliers ?
- Which version of MySQL ?

You could also take a look at this plugin: https://github.com/lefred/mysqlshell-plugins/wiki/innodb_cluster#showgroupreplicationspeed that could help you identify the problem.

Cheers,

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