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https://issues.apache.org/jira/browse/HBASE-8868?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13700220#comment-13700220
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ramkrishna.s.vasudevan commented on HBASE-8868:
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One problem here could be that since the shortcircuit read is done by the
DFSClient on the HDFS side will we get some direct metrics on this? Let me see.
But if we want the checksum metrics that can be done because HBase explicitly
switches to DFS checksum if its own checksum fails.
> 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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