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Applies to:


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Summary

S3 export automations configured with Logs (traces) only export one row per trace containing aggregated summary data, not the individual child spans within each trace. This occurs because Logs (traces) runs a summary query that consolidates all spans into a single root span with aggregated metrics. To export all child spans, change the configuration to Logs (spans) or use a custom BTQL query for more granular control.

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Resolution Steps

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If you need all child spans in your export

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Step 1: Navigate to data management settings

Go to Settings → Project → Data management.

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Step 2: Edit the S3 export automation

Click on your existing automation to edit it.

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Step 3: Change data export type

Under Data to export , select Logs (spans) instead of Logs (traces).

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Step 4: Save and verify

Click Save and wait for the next export interval to verify child spans are included.

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If you need both summary metrics and child spans

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Step 1: Use a custom BTQL query

Select Custom BTQL query as the data export type.

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Step 2: Query both traces and spans

Create separate exports or use a query that includes the specific fields you need from spans. 
select: id, span_id, parent_id, input, output, scores, metadata
from: project_logs('your-project-id') spans
filter: created >= now() - interval '1 day'

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Understanding Export Types

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Logs (traces)

Exports one row per trace with aggregated scores and metrics on the root span only. Use for high-level trace analysis. See summary spans documentation.

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Logs (spans)

Exports one row per span, including all child spans. Use for detailed debugging and span-level analysis.

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Custom query

Define exactly what data to export using SQL or BTQL for full control over output.

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Notes

  • The S3 path cannot be changed after the automation is created.
  • Each export interval can process up to 100,000 rows (traces or spans).
  • Exported files are organized by export run date, not record creation date.