BigQuery can re-execute instructions (queries) to try to proactively detect performance, correctness, or functional regressions.

BigQuery can re-execute instructions (queries) to try to proactively detect performance, correctness, or functional regressions. These re-executions will have no side effects and will happen with no additional cost or resource consumption. Data access logs may show bigquery-adminbot@system.gserviceaccount.com when BigQuery re-executes an instruction.