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From Sean Busbey <bus...@apache.org>
Subject Re: [DISCUSS] OpenTracing in HBase
Date Wed, 29 Jan 2020 01:48:02 GMT
A feature branch sounds appropriate. If there are no objections I can push
the needed branch for you to target PRs to.

On Tue, Jan 28, 2020, 15:40 Wei-Chiu Chuang <weichiu@apache.org> wrote:

> Hi!
>
> I spent the past week working on HBASE-22120
> <https://issues.apache.org/jira/browse/HBASE-22120> (Replace HTrace with
> OpenTracing). I planned to do this awhile back and am pleased to finally
> carved out some time to dedicate to this project.
>
> Here's a scope doc that describes what I plan to do and milestones.
>
> https://docs.google.com/document/d/1Q1zQKzxxymE4vcOBYElkQopmh2QvvYRBlnDqMEBPsB0/edit?usp=sharing
>
> I now have a proof of concept that:
> (1) replaced every Java HTrace code with OpenTracing/JaegerTracing.
> (2) fixed the trace propagation bug introduced in HBASE-18601 when it
> attempted to update from HTrace 3 to HTrace 4.
> (2) TestOpenTracingHooks (which is modified from TestHTraceHooks) passes,
> so that means at the very least, create table operation works.
>
> Tasks remain to be done:
> (1) more tests to make sure other existing traces works
> (2) migrate HBase shell (in Ruby) and scripts to use OpenTracing
> (3) update docs
> (4) make it easier to support other OpenTracing tracers.
> (5) propagate the traces to other systems such as HDFS and MapReduce.
>
> Now, this work is going to span a few jiras and it touches pretty much
> every part of HBase. Would it make sense to do it in a feature branch?
> Thoughts?
>
> Weichiu
>

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