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https://issues.apache.org/jira/browse/HADOOP-15566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17351982#comment-17351982
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Jason Wen commented on HADOOP-15566:
------------------------------------

[~weichiu], do we have an estimation when the migration from htrace-core4 to 
opentracing will be done and there fore the dependency of htrace-core4 will be 
removed?

The reason I am asking the vulnerability issues brought by shaded 
jackson-databind version within htrace-core4 jar: 
https://issues.apache.org/jira/browse/HADOOP-17171. Without it being fixed we 
can't pass security vulnerability scan of hadoop release.

One more question: can we rebuild htrace-core4 with upgraded jackson-databind 
version or by not shading it? Do you know will that work?

 

> Support OpenTelemetry
> ---------------------
>
>                 Key: HADOOP-15566
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15566
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: metrics, tracing
>    Affects Versions: 3.1.0
>            Reporter: Todd Lipcon
>            Assignee: Siyao Meng
>            Priority: Major
>              Labels: pull-request-available, security
>         Attachments: HADOOP-15566.000.WIP.patch, OpenTelemetry Support Scope 
> Doc v2.pdf, OpenTracing Support Scope Doc.pdf, Screen Shot 2018-06-29 at 
> 11.59.16 AM.png, ss-trace-s3a.png
>
>          Time Spent: 2h
>  Remaining Estimate: 0h
>
> 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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