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https://issues.apache.org/jira/browse/IGNITE-29098?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ilya Shishkov reassigned IGNITE-29098:
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Assignee: Ilya Shishkov
> Add PersistenceEnabled metric to expose data region type
> --------------------------------------------------------
>
> Key: IGNITE-29098
> URL: https://issues.apache.org/jira/browse/IGNITE-29098
> Project: Ignite
> Issue Type: Task
> Reporter: Ilya Shishkov
> Assignee: Ilya Shishkov
> Priority: Minor
> Fix For: 2.19
>
>
> h2. Description
> Currently there is no way to determine whether a data region is persistent or
> in-memory from its metrics. This ticket adds a boolean metric
> {{PersistenceEnabled}} to each data region, published in the
> {{io.dataregion.<name>}} registry and exposed via JMX, the read API, and the
> legacy {{DataRegionMetrics}} interface. It returns {{true}} for persistent
> regions and {{false}} for in-memory regions, determined once at startup. The
> fix also adds {{DataRegionMetrics.isPersistenceEnabled()}} implemented in
> {{DataRegionMetricsImpl}} and {{{}DataRegionMetricsSnapshot{}}}, without
> changing exporters, configuration classes, or the persistence engine.
> h2. Acceptance Criteria
> * Every data region exposes the {{PersistenceEnabled}} metric after node
> startup.
> * Value is {{true}} for persistent regions and {{false}} for in-memory
> regions.
> * Value always matches the region's persistence configuration.
> * Metric is visible in standard monitoring (e.g., JMX) alongside other data
> region metrics.
> * Existing data region metrics behave unchanged.
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