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https://issues.apache.org/jira/browse/IGNITE-18699?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pavel Pereslegin resolved IGNITE-18699.
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Resolution: Duplicate
> Sql. Simplify colocation group implementation to better fit current project
> concepts
> ------------------------------------------------------------------------------------
>
> Key: IGNITE-18699
> URL: https://issues.apache.org/jira/browse/IGNITE-18699
> Project: Ignite
> Issue Type: Improvement
> Components: sql
> Reporter: Pavel Pereslegin
> Priority: Major
> Labels: ignite-3
>
> Currently {{ColocationGroup}} stores "assignments" in a "2-dimensional" list
> (List of Lists).
> Each element of which corresponds the partition number and stores nodes list
> (e.g. partition assignment).
> The first node in this list is the primary node (replica) for the partition,
> the others are backup nodes (replicas).
> But production code only works with the primary replica, so it seems that we
> can simplify the implementation and replace the "2 dimensional" list with a
> simple list with primary replicas.
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