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Airbyte's _airbyte_meta Column Silently Logs Every Sync Data Failure

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Airbyte's Destinations V2, the default since late 2023 for Snowflake, BigQuery, and Postgres, attaches a metadata column called _airbyte_meta to every raw table it writes. This JSON column contains a changes array that records exactly which fields were nulled or altered during a sync and the reason why. When a source sends a mismatched data type or an oversized value, Airbyte does not fail the sync — it nulls the affected field, writes the row, and logs the event silently in _airbyte_meta. Common reason codes include DESTINATION_TYPECAST_ERROR and DESTINATION_SERIALIZATION_ERROR, each pointing to a specific, actionable data quality issue. Analysts can surface these hidden failures within minutes by querying the column directly using platform-specific SQL for Snowflake, Postgres, or BigQuery.

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Airbyte's _airbyte_meta Column Silently Logs Every Sync Data Failure · ShortSingh