udim commented on a change in pull request #13839:
URL: https://github.com/apache/beam/pull/13839#discussion_r582438166
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File path: sdks/python/apache_beam/io/gcp/bigquery_file_loads.py
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@@ -858,9 +859,13 @@ def _load_data(
lambda x,
deleting_tables: deleting_tables,
pvalue.AsIter(temp_tables_pc))
- | "RemoveTempTables/AddUselessValue" >> beam.Map(lambda x: (x, None))
+ # TableReference has no deterministic coder, but as this de-duplication
Review comment:
Ack. The official BigQuery client (which this code doesn't use) has a
hashable wrapper for this.
https://googleapis.dev/python/bigquery/latest/generated/google.cloud.bigquery.table.TableReference.html
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