resdevd commented on issue #13823:
URL: https://github.com/apache/airflow/issues/13823#issuecomment-940466144
@ashb Not sure if the dependencies are working even with specifying ">>".
Below is a sample Taskflow dag with PostgresOperator.
```import json
from datetime import datetime
from airflow.decorators import dag, task
from airflow.providers.postgres.operators.postgres import PostgresOperator
@dag(schedule_interval=None, start_date=datetime(2021, 10, 11),
catchup=False, tags=['example'])
def tutorial_taskflow_api_etl():
test_pg_operator = PostgresOperator(
task_id="test_pg_operator",
postgres_conn_id="rd_master_pg",
sql="SELECT 1;"
)
@task()
def extract():
data_string = '{"1001": 301.27, "1002": 433.21, "1003": 502.22}'
order_data_dict = json.loads(data_string)
return order_data_dict
@task(multiple_outputs=True)
def transform(order_data_dict: dict):
total_order_value = 0
for value in order_data_dict.values():
total_order_value += value
return {"total_order_value": total_order_value}
#
@task()
def load(total_order_value: float):
print(f"Total order value is: {total_order_value:.2f}")
order_data = extract()
order_summary = transform(order_data)
load_task_flow = load(order_summary["total_order_value"])
test_pg_operator >> load_task_flow
tutorial_etl_dag = tutorial_taskflow_api_etl()```
And still PostgresOperator seems out of the dependencies flow.
<img width="300" alt="Screen Shot 2021-10-11 at 1 43 19 PM"
src="https://user-images.githubusercontent.com/29984943/136859434-8ea02532-6730-4c6f-88b4-e879b842b8cf.png";>
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