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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-3292) Expose block cache hit/miss/evict counts into region server metrics
Date Wed, 01 Dec 2010 18:03:12 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12965768#action_12965768
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stack commented on HBASE-3292:
------------------------------

+1

Put it into 0.90 I'd say.

> Expose block cache hit/miss/evict counts into region server metrics
> -------------------------------------------------------------------
>
>                 Key: HBASE-3292
>                 URL: https://issues.apache.org/jira/browse/HBASE-3292
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Jonathan Gray
>            Assignee: Jonathan Gray
>            Priority: Minor
>             Fix For: 0.90.1, 0.92.0
>
>         Attachments: HBASE-3292-v1.patch
>
>
> Right now only the hit ratio is exposed into the rs metrics.  This value tends to change
very slowly and hardly at all once the cluster has been up for some time.
> We should expose the aggregate hit/miss/evict counts so you can more effectively see
how things change over time.

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