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https://issues.apache.org/jira/browse/HDFS-10917?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15771521#comment-15771521
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Xiaoyu Yao commented on HDFS-10917:
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[~xiaobingo], thanks for updating the patch along with the rationale behind the
sampling design of tracking send packet latency. I'm OK with the current
penultimate node sampling design and think it might be easier to evaluate the
effectiveness if we could make the sampling strategy configurable. We can do
flexible sampling with a followup JIRA.
+1 for v5 patch, pending Jenkins.
> Collect peer performance statistics on DataNode.
> ------------------------------------------------
>
> Key: HDFS-10917
> URL: https://issues.apache.org/jira/browse/HDFS-10917
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Affects Versions: 2.8.0
> Reporter: Xiaobing Zhou
> Assignee: Xiaobing Zhou
> Attachments: HDFS-10917.000.patch, HDFS-10917.001.patch,
> HDFS-10917.002.patch, HDFS-10917.003.patch, HDFS-10917.004.patch,
> HDFS-10917.005.patch
>
>
> DataNodes already detect if replication pipeline operations are slow and log
> warnings. For the purpose of analysis, performance metrics are desirable.
> This proposes adding them on DataNodes.
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