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https://issues.apache.org/jira/browse/IGNITE-25724?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vyacheslav Koptilin reassigned IGNITE-25724:
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Assignee: Vyacheslav Koptilin
> Add metrics related to unrebalanced partitions
> ----------------------------------------------
>
> Key: IGNITE-25724
> URL: https://issues.apache.org/jira/browse/IGNITE-25724
> Project: Ignite
> Issue Type: Improvement
> Components: metrics ai3
> Reporter: Vyacheslav Koptilin
> Assignee: Vyacheslav Koptilin
> Priority: Major
> Labels: ignite-3
>
> I would suggest adding the following two metrics to zone metrics:
> * localUnrebalancedPartitionsCount - number of partitions that should be
> rebalanced to this node.
> * totalUnrebalancedPartitionsCount - total number of partitions that should
> be moved to a new owner.
>
> I don't see any value in implementing these metrics for non-colocated
> clusters (see the colocation feature IGNITE-22115)
> The calculation of these metrics can be based on the data provided by the
> metastorage:
> * zone.assignments.pending
> * zone.assignments.stable
> totalUnrebalancedPartitionsCount = for each partition: if pending key is not
> empty for the partition, then +1
> localUnrebalancedPartitionsCount = for each partition: if stable key does not
> contain the local node, but pending key does, then +1
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