Ignite TC Bot created IGNITE-28742:
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Summary: Document page eviction start monitoring and
per-data-region warning behavior
Key: IGNITE-28742
URL: https://issues.apache.org/jira/browse/IGNITE-28742
Project: Ignite
Issue Type: Improvement
Components: documentation
Reporter: Ignite TC Bot
Documentation should explain how to monitor page eviction start after
IGNITE-28085 and IGNITE-28099.
The EvictionsStarted metric is already listed in the Data Region metrics table,
but the user documentation does not explain the operational scenario:
* EvictionsStarted becomes true for the affected DataRegion when page eviction
starts due to memory pressure.
* EvictionRate can be used together with EvictionsStarted to monitor ongoing
page eviction activity.
* The warning 'Page-based evictions started. Consider increasing maxSize on
Data Region configuration: <region_name>' is logged once per DataRegion.
* For monitoring, EvictionsStarted should be preferred over log parsing because
it identifies the affected DataRegion directly.
Suggested location: docs/_docs/memory-configuration/eviction-policies.adoc.
Context: CRPV-16179, related tickets IGNITE-24992, IGNITE-28085, IGNITE-28099.
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