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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-3306) Add better cache hit ratio statistics for LRU
Date Mon, 13 Dec 2010 18:28:01 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12970939#action_12970939
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Todd Lipcon commented on HBASE-3306:
------------------------------------

Something sort of kind of related which I was just mentioning to Jonathan:

​https://github.com/toddlipcon/hbase/commit/02232ed545e0d6f0c2dc5ee23321e822ddb82a21

> Add better cache hit ratio statistics for LRU
> ---------------------------------------------
>
>                 Key: HBASE-3306
>                 URL: https://issues.apache.org/jira/browse/HBASE-3306
>             Project: HBase
>          Issue Type: Improvement
>          Components: io, regionserver
>            Reporter: Jonathan Gray
>            Assignee: Jonathan Gray
>             Fix For: 0.92.0
>
>         Attachments: HBASE-3306-v1.patch
>
>
> Currently the hit ratio is a lifetime ratio.  We should have some kind of rolling window
stats, like ratio over the past hour.

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