bug: modifies latency due to flakybot issues (#781)

Author: chalmerlowe

pandas_gbq/gbq.py

@@ -419,11 +419,12 @@ def run_query(self, query, max_results=None, progress_bar_type=None, **kwargs):
  # Having too small a timeout_ms results in individual
  # API calls timing out before they can finish.
  # ~300 milliseconds is rule of thumb for bare minimum
- # latency from the BigQuery API.
- minimum_latency = 400
+ # latency from the BigQuery API, however, 400 milliseconds
+ # produced too many issues with flakybot failures.
+ minimum_latency = 500
  if timeout_ms < minimum_latency:
  raise QueryTimeout(
- f"Query timeout must be at least 400 milliseconds: timeout_ms equals {timeout_ms}."
+ f"Query timeout must be at least 500 milliseconds: timeout_ms equals {timeout_ms}."
  )
  else:
  timeout_ms = None