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https://issues.apache.org/jira/browse/IGNITE-18261?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Roman Puchkovskiy updated IGNITE-18261:
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Epic Link: IGNITE-17924
> Use RAFT learners to get updates of logical topology on non-CMG nodes
> ---------------------------------------------------------------------
>
> Key: IGNITE-18261
> URL: https://issues.apache.org/jira/browse/IGNITE-18261
> Project: Ignite
> Issue Type: Improvement
> Reporter: Roman Puchkovskiy
> Assignee: Roman Puchkovskiy
> Priority: Major
> Labels: ignite-3
> Fix For: 3.0.0-beta2
>
>
> For IGNITE-18085, we need a mechanism for a distributed, guaranteed, in-order
> delivery of events concerning the Logical Topology to all nodes of the
> cluster. CMG nodes get the corresponding events automatically thanks to the
> RAFT replication mechanism. To extend delivery (using RAFT) to the whole
> cluster we can use learners: run a learner per non-CMG node.
> When a CMG raft group is started, learners set needs to be computed as all
> nodes of the cluster that are not in the CMG. When the logical topology gets
> changed (or when CMG member set gets changed), we need to recalculate
> learners set and use {{changePeers}} accordingly.
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