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https://issues.apache.org/jira/browse/HADOOP-15566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16757657#comment-16757657
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Bogdan Drutu commented on HADOOP-15566:
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[~elek] - I have some questions about OT integration:
1) What implementation will be shipped with the official HBase binary?
2) How can somebody use a different implementation?
3) How do you ensure that a different implementation (that is not tested with
your entire test suite) may not corrupt user data? I think it is very important
that all the tests are running with the implementation that user uses in
production.
FYI: I know I am biased but I think that a different approach is better here,
use one implementation (pick something that you like the most) and export these
data to an configurable endpoint. Then every vendor can consume that format.
> 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
> Labels: security
> 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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