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https://issues.apache.org/jira/browse/CASSANDRA-13234?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15876432#comment-15876432
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Aleksey Yeschenko commented on CASSANDRA-13234:
-----------------------------------------------

Haven't looked at the patch in detail, but you should be updating 
{{HintsServiceMetrics}}, not the old {{HintedHandoffMetrics}}. The latter I 
hope to deprecate and remove in near future, the former I hope we'll flesh out 
eventually.

> Add histogram for delay to deliver hints
> ----------------------------------------
>
>                 Key: CASSANDRA-13234
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13234
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Observability
>            Reporter: Jeff Jirsa
>            Assignee: Jeff Jirsa
>            Priority: Minor
>             Fix For: 3.0.x, 3.11.x
>
>
> There is very little visibility into hint delivery in general - having 
> histograms available to understand how long it takes to deliver hints is 
> useful for operators to better identify problems. 



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