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From "Ben Sigelman (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-15566) Remove HTrace support
Date Sun, 01 Jul 2018 16:36:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-15566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16529150#comment-16529150

Ben Sigelman commented on HADOOP-15566:

Hi all – someone sent this my way. I am one of the opentracing co-creators and would be
delighted to collaborate on adding (minimal-dependency, lightweight) OpenTracing instrumentation
to ASF projects. In serendipitous news, we have recently added some resources to help with
the actual instrumentation work for well-used and well-loved projects like those in the ASF.


(PS: I am generally oversubscribed and can be bad at things like JIRA, but am 100% happy to
help here... if I'm being flaky about Jira responses, please reach out to me at [bhs@gmail.com|mailto:bhs@gmail.com] where
I maintain a better SLA ;))

> 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
> 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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