[jira] [Updated] (IGNITE-22804) Refuse network handshake if nodes have different cluster IDs

["Roman Puchkovskiy (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-22804?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Roman Puchkovskiy updated IGNITE-22804:
---------------------------------------
    Labels: iep-128 ignite-3  (was: ignite-3)

> Refuse network handshake if nodes have different cluster IDs
> ------------------------------------------------------------
>
>                 Key: IGNITE-22804
>                 URL: https://issues.apache.org/jira/browse/IGNITE-22804
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Roman Puchkovskiy
>            Assignee: Roman Puchkovskiy
>            Priority: Major
>              Labels: iep-128, ignite-3
>             Fix For: 3.0.0-beta2
>
>          Time Spent: 0.5h
>  Remaining Estimate: 0h
>
> When a node is joined to a cluster for the first time, the node gets the cluster ID from the CMG. The node then saves the cluster ID locally.
> We should validate that cluster IDs of the nodes are the same when the nodes try to establish a network connection: that is, during a handshake, if both cluster IDs are not empty and are different, we should fail the handshake.
> If one of the nodes does not have a cluster ID yet, the validation is skipped.
> Having this validation will allow to avoid mixing of the 'new part' of the cluster (where CMG was recreated) with the 'old part' of the cluster (that was not available during CMG recreation).



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