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https://issues.apache.org/jira/browse/HADOOP-15566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16553366#comment-16553366
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Elek, Marton commented on HADOOP-15566:
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[~bensigelman] Thank you very much your answer. It was very informative and
reasonable arguments. Especially the last paragraph:
{quote}
Also, building a general-purpose adapter to convert OpenTracing instrumentation
into OpenCensus API calls would be straightforward (due to the relative
"thickness" and numbers of implementation assumptions made in each project).
Going the other way would be challenging or impossible, depending on reliance
on OpenCensus wire formats.
{quote}
> Remove HTrace support
> ---------------------
>
> Key: HADOOP-15566
> URL: https://issues.apache.org/jira/browse/HADOOP-15566
> Project: Hadoop Common
> Issue Type: Improvement
> Components: metrics
> Affects Versions: 3.1.0
> Reporter: Todd Lipcon
> Priority: Major
> Attachments: Screen Shot 2018-06-29 at 11.59.16 AM.png,
> ss-trace-s3a.png
>
>
> The HTrace incubator project has voted to retire itself and won't be making
> further releases. The Hadoop project currently has various hooks with HTrace.
> It seems in some cases (eg HDFS-13702) these hooks have had measurable
> performance overhead. Given these two factors, I think we should consider
> removing the HTrace integration. If there is someone willing to do the work,
> replacing it with OpenTracing might be a better choice since there is an
> active community.
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