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https://issues.apache.org/jira/browse/HDFS-5274?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13907917#comment-13907917
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Suresh Srinivas commented on HDFS-5274:
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bq. Wouldn't adding htrace to the common pom.xml make it "...available in 
Hadoop common"? Thanks.
I agree with the comment [~cutting] had made - 
https://issues.apache.org/jira/browse/HADOOP-10311?focusedCommentId=13886809&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13886809.
 I would love to see the code in Hadoop community itself, if possible. Agreed, 
this is not different using google guava or other such libraries. But I am 
afraid this could start a trend of capabilities hosted/attributed especially to 
 vendor companies making its way into Hadoop.

With that said, I am -0 and would rather not see this becoming a trend.

> Add Tracing to HDFS
> -------------------
>
>                 Key: HDFS-5274
>                 URL: https://issues.apache.org/jira/browse/HDFS-5274
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: datanode, namenode
>    Affects Versions: 2.1.1-beta
>            Reporter: Elliott Clark
>            Assignee: Elliott Clark
>         Attachments: HDFS-5274-0.patch, HDFS-5274-1.patch, HDFS-5274-2.patch, 
> HDFS-5274-3.patch, HDFS-5274-4.patch, HDFS-5274-5.patch, HDFS-5274-6.patch, 
> HDFS-5274-7.patch, Zipkin   Trace a06e941b0172ec73.png, Zipkin   Trace 
> d0f0d66b8a258a69.png
>
>
> Since Google's Dapper paper has shown the benefits of tracing for a large 
> distributed system, it seems like a good time to add tracing to HDFS.  HBase 
> has added tracing using HTrace.  I propose that the same can be done within 
> HDFS.



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