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From "Elliott Clark (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14983) Create metrics for per block type hit/miss ratios
Date Mon, 21 Mar 2016 19:15:25 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15204919#comment-15204919
] 

Elliott Clark commented on HBASE-14983:
---------------------------------------

bq.Trailers do not go into block cache, so probably we don't need it.
My thought is to see what is being read so that figuring out what needs to go in the block
cache should be better.

bq.Should Data and EncodedData be only a single metric?
Probably, let me get that.

> Create metrics for per block type hit/miss ratios
> -------------------------------------------------
>
>                 Key: HBASE-14983
>                 URL: https://issues.apache.org/jira/browse/HBASE-14983
>             Project: HBase
>          Issue Type: Improvement
>          Components: metrics
>    Affects Versions: 1.3.0
>            Reporter: Elliott Clark
>            Assignee: Elliott Clark
>             Fix For: 2.0.0, 1.3.0
>
>         Attachments: HBASE-14983-v1.patch, HBASE-14983-v2.patch, HBASE-14983-v3.patch,
HBASE-14983-v4.patch, HBASE-14983-v5.patch, HBASE-14983-v6.patch, HBASE-14983-v7.patch, HBASE-14983-v8.patch,
HBASE-14983.patch, Screen Shot 2015-12-15 at 3.33.09 PM.png
>
>
> Missing a root index block is worse than missing a data block. We should know the difference



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