parent span with error when child span with record_exception=False and set_status_on_exception=False

[0x6f677548]

I realized that even when a child span is initialized with record_exception=False and set_status_on_exception=False, the parent span still serializes the exception and span attribute error=True.

Sample code (for the sake of simplicity, span1 has no code block,

@router.get('/testapi')
async def testapi(param1: str):
    with _tracer.start_as_current_span("span1") as span1:
       # do something else
       # ...
       
       
        with _tracer.start_as_current_span("span2", record_exception=False, set_status_on_exception=False) as span2:

            #check if param1 is different from "test"
            if param1 != "test":
                raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST,
                                detail="param1 must be equal to 'test'")


    return {"status": "ok"}

Jaeger screenshot sample:

Is there any way to avoid this? I can circumvent the triage of these events with another attribute in span1, but span2 is still serializing the exception, which is a performance penalty.
I am still new to open telemetry, so if I am challenging some best practices on exception handling, please let me know.
Thanks!

[ocelotl]

Sorry, what do you mean with span3?

[0x6f677548]

sorry. I meant "span1". That was a typo. just edited to fix it.

[ocelotl]

Thanks @0x6f677548, this is a good question. I find it easier to discuss this with some code, so I opened #3356, moving the discussion there.