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https://issues.apache.org/jira/browse/HBASE-8868?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13700446#comment-13700446
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ramkrishna.s.vasudevan commented on HBASE-8868:
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So i think we need HDFS to expose this metric wrt shortcircuit reads hit/miss
count.
Checksum metrics are already getting covered in the metrics system. So as Jean
pointed out we can display the configuration and say whether it is turned on or
not.
I think it should go in the RS metrics side because this configuration is of
more importance when set in the RS side.
> 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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