Altan Sener
03/31/2026, 2:48 PMkapa.ai
03/31/2026, 2:49 PMcom.google.cloud.bigquery.BigQueryException: Read timed out (caused by java.net.SocketTimeoutException) in the destination-bigquery connector. This happens during the initial sync setup phase, specifically when the connector tries to call getTable to check if the final table is empty (isFinalTableEmpty), before any data is written. What's happening The stack trace shows:
1. BigQueryDestinationHandler.isFinalTableEmpty → BigQueryImpl.getTable → HTTP request to BigQuery API → socket read timeout
This is a network/connectivity timeout between the Airbyte destination connector and the Google BigQuery API, not a data or configuration error. Possible causes • Transient network issue between your Airbyte instance and the BigQuery API endpoint
• GCP API slowness or outage at the time of the sync
• Firewall or proxy blocking or throttling outbound HTTPS connections to bigquery.googleapis.com
• DNS resolution delays causing the initial connection to be slow What you can try 1. Retry the sync — This is often a transient issue. The error occurs before any data is written, so retrying is safe.
2. Check GCP status — Verify there are no ongoing incidents on the Google Cloud Status Dashboard.
3. Check network connectivity — Ensure your Airbyte instance can reliably reach bigquery.googleapis.com on port 443 without timeouts.
4. Upgrade dependencies — There is an open PR [deps bump] that bumps the BigQuery Cloud dependency (google-cloud-bigquery) to the latest version, which may include fixes for HTTP client behavior. If you're self-hosting, consider tracking that update. Note on the connector version Your stack trace references google-cloud-bigquery-2.42.2.jar, which matches the version referenced in other known issues. [deps bump] The dependency bump PR may address underlying library issues.
The knowledge sources do not contain a specific documented fix for this exact timeout scenario, so if retrying and checking network connectivity don't resolve it, I'd recommend opening a GitHub issue on the Airbyte repository with your full logs. 👍 0 button 👎 0 button ℹ️ Tip: Mention @kapa.ai in the thread for follow-ups or DM the app for 1-to-1 help.