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From "Alicia Ying Shu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15518) Add Per-Table metrics back
Date Thu, 07 Apr 2016 18:03:25 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15230723#comment-15230723
] 

Alicia Ying Shu commented on HBASE-15518:
-----------------------------------------

The test hadoop.hbase.master.procedure.TestMasterFailoverWithProcedures passed on my local
box. 

> Add Per-Table metrics back
> --------------------------
>
>                 Key: HBASE-15518
>                 URL: https://issues.apache.org/jira/browse/HBASE-15518
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Enis Soztutar
>            Assignee: Alicia Ying Shu
>             Fix For: 2.0.0, 1.4.0
>
>         Attachments: HBASE-15518-v1.patch, HBASE-15518.patch
>
>
> 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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