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From "Biju Nair (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-18652) Expose individual cache stats in a CombinedCache through JMX
Date Mon, 11 Sep 2017 22:11:01 GMT

     [ https://issues.apache.org/jira/browse/HBASE-18652?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Biju Nair updated HBASE-18652:
------------------------------
    Attachment: HBASE-18652-branch-1-V2.0.PATCH

Sorry, I should have run all the tests locally. Thanks for your patience [~ted_yu]. Attached
is the updated patch and all {{org.apache.hadoop.hbase.io.hfile.*}} tests passed locally.

> Expose individual cache stats in a CombinedCache through JMX
> ------------------------------------------------------------
>
>                 Key: HBASE-18652
>                 URL: https://issues.apache.org/jira/browse/HBASE-18652
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>            Reporter: Biju Nair
>            Assignee: Biju Nair
>             Fix For: 1.4.0, 1.5.0, 2.0.0-alpha-3
>
>         Attachments: HBASE-18652-addendum.patch, HBASE-18652-BRANCH-1.PATCH, HBASE-18652-branch-1-v1.0.patch,
HBASE-18652-branch-1-V2.0.PATCH, HBASE-18652.PATCH, HBASE-18652-V1.0.PATCH, HBASE-18652-V2.0.PATCH,
HBASE-18652-WIP.PATCH
>
>
> With offHeap cache being used to store data blocks and on-heap for index and bloom filters,
exposing the stats from the individual caches through JMX will help understand the cache usage
trend. Currently the combined cache stats is available through JMX which may not provide insight
into the individual cache usage.



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