GoogleApiException: Google.Apis.Requests.RequestError Backend Error [500] when streaming to BigQuery - google-bigquery

Question

I'm streaming data to BigQuery for the past year or so from a service in Azure written in c# and recently started to get increasing amount of the following errors (most of the requests succeed):
Message: [GoogleApiException: Google.Apis.Requests.RequestError An
internal error occurred and the request could not be completed. [500]
Errors [
Message[An internal error occurred and the request could not be completed.] Location[ - ] Reason[internalError] Domain[global] ] ]
This is the code I'm using in my service:
public async Task<TableDataInsertAllResponse> Update(List<TableDataInsertAllRequest.RowsData> rows, string tableSuffix)
{
var request = new TableDataInsertAllRequest {Rows = rows, TemplateSuffix = tableSuffix};
var insertRequest = mBigqueryService.Tabledata.InsertAll(request, ProjectId, mDatasetId, mTableId);
return await insertRequest.ExecuteAsync();
}

Answer 1

Just like any other cloud service, BigQuery doesn't offer a 100% uptime SLA (it's actually 99.9%), so it's not uncommon to encounter transient errors like these. We also receive them frequently in our applications.
You need to build exponential backoff-and-retry logic into your application(s) to handle such errors. A good way of doing this is to use a queue to stream your data to BigQuery. This is what we do and it works very well for us.
Some more info:
https://cloud.google.com/bigquery/troubleshooting-errors
https://cloud.google.com/bigquery/loading-data-post-request#exp-backoff
https://cloud.google.com/bigquery/streaming-data-into-bigquery
https://cloud.google.com/bigquery/sla