[BEAM-10680] Give an option to override the default number of shards in BQ streaming inserts

• Type: Improvement
• Status: Open
• Priority: P3
• Resolution: Unresolved
• Component/s: io-py-gcp
• Labels: bigquery
• Assignee: Unassigned
• Reporter: Pablo Estrada
• Created: 11/Aug/20 20:23
• Updated: 04/Jun/22 17:17

Description

As per https://github.com/apache/beam/pull/12485 there's no way to override it, though Java does have one: 
https://github.com/apache/beam/blob/master/sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/bigquery/BigQueryOptions.java#L58
 
 
Let's add a good way to override this.