Sentry crashing - python 3.11, AWS Lambda - x86_64

[FinchPowers]

How do you use Sentry?

Sentry Saas (sentry.io)

Version

2.23.1

Steps to Reproduce

Invoke a lambda more than once.
The first time works.
All subsequent invocations fail.

Expected Result

No crash. :)

Actual Result

Crashes with the following stack trace

[ERROR] InvalidOperation: [<class 'decimal.InvalidOperation'>]
Traceback (most recent call last):
  File "/var/task/sentry_sdk/integrations/aws_lambda.py", line 152, in sentry_handler
    transaction = continue_trace(
  File "/var/task/sentry_sdk/api.py", line 431, in continue_trace
    return get_isolation_scope().continue_trace(
  File "/var/task/sentry_sdk/scope.py", line 1161, in continue_trace
    transaction = Transaction.continue_from_headers(
  File "/var/task/sentry_sdk/tracing.py", line 518, in continue_from_headers
    transaction = Transaction(**kwargs)
  File "/var/task/sentry_sdk/tracing.py", line 818, in __init__
    self._sample_rand = _generate_sample_rand(self.trace_id)
  File "/var/task/sentry_sdk/tracing_utils.py", line 874, in _generate_sample_rand
    return Decimal(sample_rand).quantize(Decimal("0.000001"), rounding=ROUND_DOWN)

[FinchPowers]

Downgrading to 2.22.0 "fixed" the issue.

[sl0thentr0py]

@FinchPowers

• what is your sentry config / traces_sample_rate?
• is your lambda getting requests from an upstream service (say javascript) with sentry enabled too?
• your python version

[sentrivana]

Hey @FinchPowers, was this error sent to Sentry? If yes, can you send us a link to it? If you don't want to share it publicly feel free to send it to ivana.kellyer at sentry.io.

[sl0thentr0py]

investigation:

this seems to have to do with the Decimal Context precision
https://stackoverflow.com/a/31795261

see

>>> Decimal("0.3333333333333333333333333333333").quantize(Decimal("0.000001"), rounding=ROUND_DOWN)
Decimal('0.333333')
>>> from decimal import Context
>>> Decimal("0.3333333333333333333333333333333").quantize(Decimal("0.000001"), rounding=ROUND_DOWN, context=Context(prec=3))
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
decimal.InvalidOperation: [<class 'decimal.InvalidOperation'>]
>>>

so mostly seems like AWS lambdas have a different default precision set up