Dropping trace reason: invalid span

[alicederyn]

I am attempting to enable Java log extraction using logstash-logback-encoder 5.3, as per the DD SLF4j log collection recommendation, hooked into DropWizard with code derived from alphagov/dropwizard-logstash, but have been getting errors from the DataDog agent (6.5.2):

2019-02-15 10:11:00 ERROR (receiver.go:249) - dropping trace reason: invalid span (SpanID:7825268426873700594): span.normalize: empty `Resource` (debug for more info), [service:"celery-producer" name:"celery.apply" resource:"underwriter.tasks.send_emails" traceID:6158656447690087821 spanID:7922240380175914865 start:1550225460008454144 duration:5079269 meta:<key:"celery.action" value:"apply_async" > meta:<key:"celery.id" value:"d428fbdd-2f73-4135-a6e2-c1b36a526697" > meta:<key:"celery.routing_key" value:"rats-develop-email" > meta:<key:"system.pid" value:"71" > metrics:<key:"_sampling_priority_v1" value:1 > service:"kombu" name:"kombu.publish" traceID:6158656447690087821 spanID:7825268426873700594 parentID:7922240380175914865 start:1550225460008607232 duration:4864931 meta:<key:"kombu.exchange" value:"" > meta:<key:"kombu.routing_key" value:"rats-develop-email" > metrics:<key:"kombu.body_length" value:77 > type:"kombu" ]

It looks like I may not be the only one experiencing this issue: DataDog/datadog-agent#2925

Am I doing something wrong? Is there something I can do in my code to easily fix this?

Thanks,
Alice

[alicederyn]

I think this comes down to me forgetting what year it is now 😳 My apologies.