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https://issues.apache.org/jira/browse/HDFS-11171?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15707426#comment-15707426
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Brahma Reddy Battula commented on HDFS-11171:
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do you want to contribute patch for this..?
[~5feixiang] added you HDFS contributor.
Go through https://wiki.apache.org/hadoop/HowToContribute and if you any
questions, you can post in [user mailing
list|http://hadoop.apache.org/mailing_lists.html]
FYI. fix version will set once issue is fixed ( 2.7.1 is already released).
> add metric to report client shortcircuit reads
> ----------------------------------------------
>
> Key: HDFS-11171
> URL: https://issues.apache.org/jira/browse/HDFS-11171
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Affects Versions: 2.7.1
> 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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