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https://issues.apache.org/jira/browse/HBASE-19035?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16221784#comment-16221784
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Duo Zhang commented on HBASE-19035:
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+1 on moving the metrics update for scan into RegionScanner instead of
RSRpcService.
> Miss metrics when coprocessor use region scanner to read data
> -------------------------------------------------------------
>
> Key: HBASE-19035
> URL: https://issues.apache.org/jira/browse/HBASE-19035
> Project: HBase
> Issue Type: Bug
> Reporter: Guanghao Zhang
>
> Region interface is exposed to coprocessor. So coprocessor use getScanner to
> get a region scanner to read data. But the scan metrics was only updated in
> region server level. So we will miss some scan metrics for the read from
> coprocessor.
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