Dataflow runner: rateLimit exceeded from BigQuery API in start_bundle

When many machines, or too big machines are used, BigQuery returns rateLimit exceeded errors in response to the GET requests from BigQueryWriteFn.start_bundle.

Unsure if this causes performance issues, or is just noise. (Produced with a pipeline reading strings from Pub/Sub that are ~1000 characters long, and writing directly to BigQuery)

{{... File "/usr/local/lib/python2.7/dist-packages/apache_beam/io/gcp/bigquery.py", line 1087, in get_or_create_table found_table = self._get_table(project_id, dataset_id, table_id) File "/usr/local/lib/python2.7/dist-packages/apache_beam/utils/retry.py", line 184, in wrapper return fun(*args, **kwargs) File "/usr/local/lib/python2.7/dist-packages/apache_beam/io/gcp/bigquery.py", line 925, in _get_table response = self.client.tables.Get(request) File "/usr/local/lib/python2.7/dist-packages/apache_beam/io/gcp/internal/clients/bigquery/bigquery_v2_client.py", line 611, in Get config, request, global_params=global_params) File "/usr/local/lib/python2.7/dist-packages/apitools/base/py/base_api.py", line 722, in _RunMethod return self.ProcessHttpResponse(method_config, http_response, request) File "/usr/local/lib/python2.7/dist-packages/apitools/base/py/base_api.py", line 728, in ProcessHttpResponse self.__ProcessHttpResponse(method_config, http_response, request)) File "/usr/local/lib/python2.7/dist-packages/apitools/base/py/base_api.py", line 599, in __ProcessHttpResponse http_response, method_config=method_config, request=request) HttpForbiddenError: HttpError accessing <[https://www.googleapis.com/bigquery/v2/projects//datasets/](https://www.googleapis.com/bigquery/v2/projects/carrefour-170216/datasets/realtime_dashboard/tables/realtime_errors?alt=json) [](https://www.googleapis.com/bigquery/v2/projects/carrefour-170216/datasets/realtime_dashboard/tables/realtime_errors?alt=json) [/tables/](https://www.googleapis.com/bigquery/v2/projects/carrefour-170216/datasets/realtime_dashboard/tables/realtime_errors?alt=json) [](https://www.googleapis.com/bigquery/v2/projects/carrefour-170216/datasets/realtime_dashboard/tables/realtime_errors?alt=json) [?alt=json](https://www.googleapis.com/bigquery/v2/projects/carrefour-170216/datasets/realtime_dashboard/tables/realtime_errors?alt=json)\>: response: <

{'status': '403', 'content-length': '577', 'x-xss-protection': '1; mode=block', 'x-content-type-options': 'nosniff', 'transfer-encoding': 'chunked', 'expires': 'Sun, 25 Nov 2018 14:36:24 GMT', 'vary': 'Origin, X-Origin', 'server': 'GSE', '-content-encoding': 'gzip', 'cache-control': 'private, max-age=0', 'date': 'Sun, 25 Nov 2018 14:36:24 GMT', 'x-frame-options': 'SAMEORIGIN', 'content-type': 'application/json; charset=UTF-8'}

\>, content <{ "error": { "errors": [

{ "domain": "global", "reason": "rateLimitExceeded", "message": "Exceeded rate limits: Your user_method exceeded quota for api requests per user per method. For more information, see https://cloud.google.com/bigquery/troubleshooting-errors", "locationType": "other", "location": "helix_api.method_request" }

], "code": 403, "message": "Exceeded rate limits: Your user_method exceeded quota for api requests per user per method. For more information, see [https://cloud.google.com/bigquery/troubleshooting-errors](https://cloud.google.com/bigquery/troubleshooting-errors)"}}

Imported from Jira [BEAM-6169](https://issues.apache.org/jira/browse/BEAM-6169). Original Jira may contain additional context.
Reported by: tpilewicz.