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https://issues.apache.org/jira/browse/HDFS-11171?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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5feixiang updated HDFS-11171:
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Attachment: (was: localReadMetrics.patch)
> Add localBytesRead and localReadTime for datanode metrics to calculate local
> read rate which is useful to compare .
> -------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-11171
> URL: https://issues.apache.org/jira/browse/HDFS-11171
> Project: Hadoop HDFS
> Issue Type: Wish
> Components: datanode
> Reporter: 5feixiang
> Labels: metrics
>
> Current dfs context metrics only contains bytesRead ,remoteBytesRead and
> totalReadTime.We can find that bytesRead= remoteBytesRead +balance remote
> copyBytesRead+localBytesRead, so we can add localBytesRead and localReadTime
> to calcute local read rate which is usefu to compate local read rate between
> short-circuit read and tcp-socket read.
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