Re: [PR] WIP: Add spans for task execution [airflow]

Sat, 21 Feb 2026 15:57:33 -0800 


dstandish commented on PR #61897:
URL: https://github.com/apache/airflow/pull/61897#issuecomment-3939734796

   > BTW @dstandish, if you _do_ want to generate spans for a full dag run or 
task execution, I don't think that should be too hard to do.
   > 
   > The basic idea is that the parent span doesn't need to exist from the 
start. Only its span _context_ (i.e. its allocated trace ID and span ID) needs 
to be allocated from the beginning. So you'd generate the span context for the 
dag run (and then again I guess for each task within the dag), save it in the 
database, and then pull it out right at the end of the dag run (or at the end 
of the task execution) and emit a synthetic span that's "backdated" to start 
when the database says it started.
   > 
   > I knocked up [a small example of how to do 
this](https://gist.github.com/nickstenning/2f82c85aa073fb00aa6f12e90f4c4e28) 
that uses `opentelemetry.context` to force a particular trace ID and span ID to 
be used when we want that.
   > 
   > <img alt="image" width="1328" height="904" 
src="https://private-user-images.githubusercontent.com/3602/553021536-e9140784-327b-450c-96b1-709ddba1eaaf.png?jwt=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.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.3L2rUXOz2BcaVJ3c0ud_Pn5MUT0yQvYhFgCyBTfqP_A";>
   
   I'm a little confused by your example
   
   can you make it more concrete by saying how you would modify how it looks 
right now?
   
   here's what it looks like right now
   
   <img width="806" height="271" alt="image" 
src="https://github.com/user-attachments/assets/894dce87-c358-43f2-9f43-1482c290a3b4";
 />
   


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