Kiollpt opened a new issue #16578:
URL: https://github.com/apache/airflow/issues/16578
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**Apache Airflow version**: 2.1.0
**apache-airflow-providers-google**: 4.0.0rc1
**What happened**:
<!-- (please include exact error messages if you can) -->
```python
t1 = GCSToBigQueryOperator(
task_id='ingest_data',
bucket='harry-airflow-dev',
source_objects=['log_raw_data_0'],
source_format='PARQUET',
destination_project_dataset_table=f"{DATASET_NAME}.{TABLE_NAME}",
write_disposition='WRITE_TRUNCATE'
)
```
**error messages**:
```log
Traceback (most recent call last):
File
"/home/harry/.local/lib/python3.8/site-packages/airflow/models/taskinstance.py",
line 1137, in _run_raw_task
self._prepare_and_execute_task_with_callbacks(context, task)
File
"/home/harry/.local/lib/python3.8/site-packages/airflow/models/taskinstance.py",
line 1311, in _prepare_and_execute_task_with_callbacks
result = self._execute_task(context, task_copy)
File
"/home/harry/.local/lib/python3.8/site-packages/airflow/models/taskinstance.py",
line 1341, in _execute_task
result = task_copy.execute(context=context)
File "/home/harry/airflow/plugins/operators/gcs_to_bq.py", line 107, in
execute
cursor.run_load(
File
"/home/harry/.local/lib/python3.8/site-packages/airflow/providers/google/cloud/hooks/bigquery.py",
line 2688, in run_load
return self.hook.run_load(*args, **kwargs)
File
"/home/harry/.local/lib/python3.8/site-packages/airflow/providers/google/cloud/hooks/bigquery.py",
line 1921, in run_load
job = self.insert_job(configuration=configuration,
project_id=self.project_id)
File
"/home/harry/.local/lib/python3.8/site-packages/airflow/providers/google/common/hooks/base_google.py",
line 425, in inner_wrapper
return func(self, *args, **kwargs)
File
"/home/harry/.local/lib/python3.8/site-packages/airflow/providers/google/cloud/hooks/bigquery.py",
line 1641, in insert_job
job.result()
File
"/home/harry/.local/lib/python3.8/site-packages/google/cloud/bigquery/job/base.py",
line 679, in result
return super(_AsyncJob, self).result(timeout=timeout, **kwargs)
File
"/home/harry/.local/lib/python3.8/site-packages/google/api_core/future/polling.py",
line 134, in result
raise self._exception
google.api_core.exceptions.Conflict: 409 Already Exists: Table
bigdata-dev-287803:z_harry_test.gcs_to_bq_table
```
**What you expected to happen**:
As the document said, using `WRITE_TRUNCATE ` should erase the data and the
schema in the existing table.
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