Maksim Timonin created IGNITE-25534:
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Summary: Validate that cluster might contain at most 2 different
Ignite versions
Key: IGNITE-25534
URL: https://issues.apache.org/jira/browse/IGNITE-25534
Project: Ignite
Issue Type: Improvement
Reporter: Maksim Timonin
For Rolling Upgrade feature, Ignite cluster can contain 2 (at most) different
versions of Ignite nodes. Let's add check for that.
This check must be hidden for a while, and enabled by system property.
Start point to see is OsDiscoveryNodeValidationProcessor
Need to write compatibility tests, cover cases with thick clients
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