What is the maximum number of master servers in a multi-source replication?

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carlos pirez

• June 09, 2017 17:06

Hello Friends,

Recently I deployed a multi-source replication scheme with over 100 master servers against a single slave. I had no problem with the setup despite, according to the documentation (https://mariadb.com/kb/en/mariadb/multi-source-replication/) the maximum number of nodes was 64.

I was wondering whether this limit was expanded in recent releases, but I could not find any further mention to it in the release notes.

However, I am having some spurious replication issues. For example, there are missing rows in the slave database. These missing rows come from random master servers. I would like to confirm with you that the limit of 64 servers was in fact expanded in version 10.1.22 (or prior) of MariaDB, running on a 64-bit Centos, so I can discard this as a possible cause for the problem we are experiencing.

I appreciate very much your time and help with this issue.

Best,

Carlos

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• Official comment

  

  Ashraf Sharif

  • June 12, 2017 08:24

  Hi Carlos,

  Take note that ClusterControl does not support multi-source replication. Until we do, I recommend you contact the MariaDB open question forum to get a better answer.

  Regards,
  Ashraf

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  Ashraf Sharif

  • June 12, 2017 08:06

  Hi Carlos,

  Unfortunately, we have not tested with that high number of servers. Perhaps somebody from the community have something to share?

  Regards,
  Ashraf

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