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https://issues.apache.org/jira/browse/IGNITE-7499?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16426798#comment-16426798
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Andrey Kuznetsov commented on IGNITE-7499:
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Unlike regular data regions, system data region configuration is hardcoded, and
metrics are disabled there. [~kuaw26], do we have real reasons to query metrics
for system data region? Depending on the answer to this question we can choose
the way of fixing the issue.
> 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: 2.5
>
>
> 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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