python: add celery distributed tracing example #96
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Kyle-Verhoog
commented
Mar 31, 2020
| amqp==2.5.2 | ||
| billiard==3.6.3.0 | ||
| celery==4.4.2 | ||
| -e git://github.com/thieman/dd-trace-py.git@69d6cfe419468e8a22710068cb74d55694f1d311#egg=ddtrace |
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TODO: update this to 0.37 when released
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what is "distributed tracing" exactly? I read about distributed tracing headers in https://ddtrace.readthedocs.io/en/stable/integrations.html#celery but I'm not sure what they are or when you would want to set DD_CELERY_DISTRIBUTED_TRACING to true |
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Ah, after reading DataDog/dd-trace-py#1179 I think I understand it now. By setting DD_CELERY_DISTRIBUTED_TRACING to true the distributed tracing headers (ex: trace ID) are passed to celery, which lets datadog know that the celery span and the producer span are both part of the same transaction. |
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