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https://issues.apache.org/jira/browse/IGNITE-3495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15393942#comment-15393942
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Vladislav Pyatkov commented on IGNITE-3495:
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Unfortunately, there is metrics do not reflect real life.
Correction of the behavior leads to other issues it the current implementation 
of metrics.
By my assume, the interface requires a review and rework measure processing.
The task will be delayed until the interface will not be revised.

> CacheMetrics.getAverage###Time is not calculated properly
> ---------------------------------------------------------
>
>                 Key: IGNITE-3495
>                 URL: https://issues.apache.org/jira/browse/IGNITE-3495
>             Project: Ignite
>          Issue Type: Bug
>            Reporter: Denis Magda
>            Assignee: Vladislav Pyatkov
>         Attachments: ExampleNodeStartupClient.java, IGNITE_3495.patch, 
> example-default.xml
>
>
> {{CacheMetrics.getAverageGetTime}}, {{CacheMetrics.getAveragePutTime}} and 
> {{CacheMetrics.getAverageRemoveTime}} are not calculated properly in the 
> following scenario:
> - start a server node;
> - start a client node that will perform gets and puts;
> - {{CacheMetrics.getAverage###Time}} will always be 0 for the server node's 
> cluster group.
> The issue happens because {{CacheMetricsImpl.add###TimeNanos}} method is not 
> called on the server side when a metric related event happens.
> In the attache you can find source that showcases the bug.
> - start basic {{ExampleNodeStartup}} using attached configuration 
> {{example-default.xml}} conjuration;
> - start {{ExampleNodeStartupClient}}. You will see that average metrics are 
> not incremented.



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