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From "Yu Li (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15163) Add sampling code and metrics for get/scan/multi/mutate count separately
Date Tue, 26 Jan 2016 06:42:40 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15163?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15116782#comment-15116782
] 

Yu Li commented on HBASE-15163:
-------------------------------

Thanks for the clarification Elliott, I understand your concern. However, it seems to me all
newly added metrics here are *count* rather than *rate*, so I think they are free from the
issues you mentioned.

Regarding the screenshot I pasted, the rate is computed at front-end, not reported by hbase
metrics. Maybe this is what confusing you?

> Add sampling code and metrics for get/scan/multi/mutate count separately
> ------------------------------------------------------------------------
>
>                 Key: HBASE-15163
>                 URL: https://issues.apache.org/jira/browse/HBASE-15163
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Yu Li
>            Assignee: Yu Li
>         Attachments: DifferentRequestQPS.png, HBASE-15163.patch
>
>
> This way we could see QPS of different kinds of requests, to better analyze what's causing
hot spot in system



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