[jira] [Resolved] (HBASE-20240) CLONE - Add Per-Table metrics back

["Xu Zhidan (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-20240?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xu Zhidan resolved HBASE-20240.
-------------------------------
    Resolution: Auto Closed

> CLONE - Add Per-Table metrics back
> ----------------------------------
>
>                 Key: HBASE-20240
>                 URL: https://issues.apache.org/jira/browse/HBASE-20240
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Xu Zhidan
>            Assignee: Alicia Ying Shu
>            Priority: Major
>             Fix For: 2.0.0, 1.3.0
>
>
> We used to have per-table metrics, but it was removed in some restructuring. We have per-region metrics, and per-regionserver metrics, but nothing in between. 
> For majority of users, per-region is too granular, they are mostly interested in table level aggregates. This is especially useful in multi-tenant cases where a table's disk usage, number of requests, etc can be made much more visible. 
> In this jira, we'll add the basic infrastructure to add a single (or a few) per-table metrics. Than we can improve on that by adding remaining metrics from the region server level. 
> The plan is to NOT aggregate per-table metrics at master for now. Just aggregation of per-region metrics at the per-table level for every regionserver. 



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