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https://issues.apache.org/jira/browse/IGNITE-7499?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16620373#comment-16620373
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Alexey Kuznetsov commented on IGNITE-7499:
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[~andrey-kuznetsov], There no special reason, I just collect metrics from ALL
regions to show on external tools, like Web Console.
And I do not like idea to filter system / regular data regions on UI. It is
better just collect metrics and show them.
> DataRegionMetricsImpl#getPageSize returns ZERO for system data regions
> ----------------------------------------------------------------------
>
> Key: IGNITE-7499
> URL: https://issues.apache.org/jira/browse/IGNITE-7499
> Project: Ignite
> Issue Type: Bug
> Components: cache
> Reporter: Alexey Kuznetsov
> Assignee: Andrey Kuznetsov
> Priority: Major
> Fix For: 2.8
>
>
> Working on IGNITE-7492 I found that DataRegionMetricsImpl#getPageSize returns
> ZERO for system data regions.
> Meanwhile there is also
> org.apache.ignite.internal.pagemem.PageMemory#systemPageSize method.
> That looks a bit strange, why we need PageSize and SystemPageSize ?
>
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