Lambda exiting before sending telemetry data about aws-otel-community

[anuraaga]

Hi @dhenard - can you confirm the span processor you are using is the BatchSpanProcessor which should be the default? Your code has the forceFlush which should really be taking care of blocking until the span's been spent as implemented here

https://github.com/open-telemetry/opentelemetry-js/blob/392c43f2f6b10c608e8882cd97925a2fedd58b08/packages/opentelemetry-tracing/src/export/BatchSpanProcessor.ts#L55

If you happen to be using the SimpleSpanProcessor, then indeed there seems to be a bug there as pending requests would not actually be waited on.

https://github.com/open-telemetry/opentelemetry-js/blob/392c43f2f6b10c608e8882cd97925a2fedd58b08/packages/opentelemetry-tracing/src/export/SimpleSpanProcessor.ts#L38

[anuraaga]

Sorry I noticed our docs are incorrectly using SimpleSpanProcessor so I guess you might be using it

https://aws-otel.github.io/docs/getting-started/js-sdk/trace-manual-instr#export-trace-data-to-otlp-exporter

If you can try the BatchSpanProcessor (I think just replace the import / constructor call) that would be great.

[dhenard]

Hey @anuraaga - Thanks for looking into this, I was using the SimpleSpanProcessor but will give the BatchSpanProcessor a go.

BatchSpanProcessor is working without the need for a delay.

[anuraaga]

@dhenard Excellent, glad to hear that! Let me close this issue and feel free to post again if anything comes up.