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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8868) add metric to report client shortcircuit reads
Date Thu, 04 Jul 2013 15:59:48 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8868?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13700166#comment-13700166
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ramkrishna.s.vasudevan commented on HBASE-8868:
-----------------------------------------------

I can see that in the trunk version clicking on the HBase configuration link in the UI shows
the list of configuration.  That would help us to know if the property is set or not set.
Anyway to address Virals' concern we can expose a metric.
                
> add metric to report client shortcircuit reads
> ----------------------------------------------
>
>                 Key: HBASE-8868
>                 URL: https://issues.apache.org/jira/browse/HBASE-8868
>             Project: HBase
>          Issue Type: Improvement
>          Components: metrics, regionserver
>    Affects Versions: 0.94.8, 0.95.1
>            Reporter: Viral Bajaria
>            Priority: Minor
>
> With the availability of shortcircuit reads, when the feature is enabled there is no
metric which exposes how many times the regionserver was able to shortcircuit the read and
not make a IPC to the datanode.
> It will be great to add the metric and expose it via Ganglia.

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