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Posted to commits@airflow.apache.org by GitBox <gi...@apache.org> on 2021/04/02 07:33:29 UTC
[GitHub] [airflow] kaojunsong opened a new issue #15150: "duplicate key value violates unique constraint "dag_run_dag_id_execution_date_key" when triggering a DAG
kaojunsong opened a new issue #15150:
URL: https://github.com/apache/airflow/issues/15150
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**Apache Airflow version**:
2.0.0
**Kubernetes version (if you are using kubernetes)** (use `kubectl version`):
1.14
**Environment**:
- **Cloud provider or hardware configuration**:
- **OS** (e.g. from /etc/os-release):
- **Kernel** (e.g. `uname -a`):
- **Install tools**:
- **Others**:
**What happened**:
[2021-04-02 07:23:30,513] [ERROR] app.py:1892 - Exception on /api/v1/dags/auto_test/dagRuns [POST]
Traceback (most recent call last):
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1277, in _execute_context
cursor, statement, parameters, context
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/default.py", line 608, in do_execute
cursor.execute(statement, parameters)
psycopg2.errors.UniqueViolation: duplicate key value violates unique constraint "dag_run_dag_id_execution_date_key"
DETAIL: Key (dag_id, execution_date)=(auto_test, 1967-12-13 20:57:42.043+01) already exists.
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 2447, in wsgi_app
response = self.full_dispatch_request()
File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1952, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1821, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/usr/local/lib/python3.6/site-packages/flask/_compat.py", line 39, in reraise
raise value
File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1950, in full_dispatch_request
rv = self.dispatch_request()
File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1936, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "/usr/local/lib/python3.6/site-packages/connexion/decorators/decorator.py", line 48, in wrapper
response = function(request)
File "/usr/local/lib/python3.6/site-packages/connexion/decorators/uri_parsing.py", line 144, in wrapper
response = function(request)
File "/usr/local/lib/python3.6/site-packages/connexion/decorators/validation.py", line 184, in wrapper
response = function(request)
File "/usr/local/lib/python3.6/site-packages/connexion/decorators/validation.py", line 384, in wrapper
return function(request)
File "/usr/local/lib/python3.6/site-packages/connexion/decorators/response.py", line 103, in wrapper
response = function(request)
File "/usr/local/lib/python3.6/site-packages/connexion/decorators/parameter.py", line 121, in wrapper
return function(**kwargs)
File "/usr/local/lib/python3.6/site-packages/airflow/api_connexion/security.py", line 47, in decorated
return func(*args, **kwargs)
File "/usr/local/lib/python3.6/site-packages/airflow/utils/session.py", line 65, in wrapper
return func(*args, session=session, **kwargs)
File "/usr/local/lib/python3.6/site-packages/airflow/api_connexion/endpoints/dag_run_endpoint.py", line 231, in post_dag_run
session.commit()
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/orm/session.py", line 1046, in commit
self.transaction.commit()
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/orm/session.py", line 504, in commit
self._prepare_impl()
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/orm/session.py", line 483, in _prepare_impl
self.session.flush()
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/orm/session.py", line 2540, in flush
self._flush(objects)
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/orm/session.py", line 2682, in _flush
transaction.rollback(_capture_exception=True)
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/util/langhelpers.py", line 70, in __exit__
with_traceback=exc_tb,
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/util/compat.py", line 182, in raise_
raise exception
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/orm/session.py", line 2642, in _flush
flush_context.execute()
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/orm/unitofwork.py", line 422, in execute
rec.execute(self)
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/orm/unitofwork.py", line 589, in execute
uow,
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/orm/persistence.py", line 245, in save_obj
insert,
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/orm/persistence.py", line 1136, in _emit_insert_statements
statement, params
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1011, in execute
return meth(self, multiparams, params)
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/sql/elements.py", line 298, in _execute_on_connection
return connection._execute_clauseelement(self, multiparams, params)
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1130, in _execute_clauseelement
distilled_params,
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1317, in _execute_context
e, statement, parameters, cursor, context
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1511, in _handle_dbapi_exception
sqlalchemy_exception, with_traceback=exc_info[2], from_=e
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/util/compat.py", line 182, in raise_
raise exception
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1277, in _execute_context
cursor, statement, parameters, context
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/default.py", line 608, in do_execute
cursor.execute(statement, parameters)
sqlalchemy.exc.IntegrityError: (psycopg2.errors.UniqueViolation) duplicate key value violates unique constraint "dag_run_dag_id_execution_date_key"
DETAIL: Key (dag_id, execution_date)=(auto_test, 1967-12-13 20:57:42.043+01) already exists.
[SQL: INSERT INTO dag_run (dag_id, execution_date, start_date, end_date, state, run_id, creating_job_id, external_trigger, run_type, conf, last_scheduling_decision, dag_hash) VALUES (%(dag_id)s, %(execution_date)s, %(start_date)s, %(end_date)s, %(state)s, %(run_id)s, %(creating_job_id)s, %(external_trigger)s, %(run_type)s, %(conf)s, %(last_scheduling_decision)s, %(dag_hash)s) RETURNING dag_run.id]
[parameters: {'dag_id': 'auto_test', 'execution_date': datetime.datetime(1967, 12, 13, 19, 57, 42, 43000, tzinfo=Timezone('UTC')), 'start_date': datetime.datetime(2021, 4, 2, 7, 23, 30, 511735, tzinfo=Timezone('UTC')), 'end_date': None, 'state': 'running', 'run_id': 'dag_run_id_zstp_4435_postman11', 'creating_job_id': None, 'external_trigger': True, 'run_type': <DagRunType.MANUAL: 'manual'>, 'conf': <psycopg2.extensions.Binary object at 0x7f07b30b71e8>, 'last_scheduling_decision': None, 'dag_hash': None}]
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**What you expected to happen**:
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**How to reproduce it**:
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[GitHub] [airflow] vikramcse commented on issue #15150: "duplicate key value violates unique constraint "dag_run_dag_id_execution_date_key" when triggering a DAG
Posted by GitBox <gi...@apache.org>.
vikramcse commented on issue #15150:
URL: https://github.com/apache/airflow/issues/15150#issuecomment-812834217
Hi @kaxil and @ephraimbuddy
I am able to reproduce the issue and tried to resolve it.
Below is the error message returned by the `/dagRuns` api. My question is does the below returned message detail text is correct?
please let me know if it needs some change.
```javascript
{
"detail": "DAGRun with DAG ID: 'taskflow', DAGRun ID: 'dag_run_id_zstp_4435_postman and DAGRun ExecutionDate '2021-04-03 07:50:16.317733+00:00' already exists",
"status": 409,
"title": "Conflict",
"type": "http://apache-airflow-docs.s3-website.eu-central-1.amazonaws.com/docs/apache-airflow/latest/stable-rest-api-ref.html#section/Errors/AlreadyExists"
}
```
Thank You
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[GitHub] [airflow] kaxil edited a comment on issue #15150: "duplicate key value violates unique constraint "dag_run_dag_id_execution_date_key" when triggering a DAG
Posted by GitBox <gi...@apache.org>.
kaxil edited a comment on issue #15150:
URL: https://github.com/apache/airflow/issues/15150#issuecomment-812701161
The DagRun table has the following constraints:
https://github.com/apache/airflow/blob/83d702c345f8f4ce16d32268f4f83ee508fea676/airflow/models/dagrun.py#L96-L97
which is why you can't create / trigger a DagRun that violates it i.e. you can't trigger a DAG with same `execution_date` or with same `run_id`.
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[GitHub] [airflow] kaxil commented on issue #15150: "duplicate key value violates unique constraint "dag_run_dag_id_execution_date_key" when triggering a DAG
Posted by GitBox <gi...@apache.org>.
kaxil commented on issue #15150:
URL: https://github.com/apache/airflow/issues/15150#issuecomment-812761779
> @kaxil Thanks for your reply. I got your point, but the client gets a 500 HTTP code now, and I think it better if it returns 400 or 409 or any other suitable code.
Agreed.
cc @ephraimbuddy
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[GitHub] [airflow] vikramcse edited a comment on issue #15150: "duplicate key value violates unique constraint "dag_run_dag_id_execution_date_key" when triggering a DAG
Posted by GitBox <gi...@apache.org>.
vikramcse edited a comment on issue #15150:
URL: https://github.com/apache/airflow/issues/15150#issuecomment-812834217
Hi @kaxil and @ephraimbuddy
I am able to reproduce the issue and tried to resolve it.
Below is the error message returned by the `/dagRuns` api. My question is does the below returned message detail text is correct?
please let me know if it needs some change.
```javascript
{
"detail": "DAGRun with DAG ID: 'taskflow' and DAGRun ExecutionDate '2021-04-03 07:50:16.317733+00:00' already exists",
"status": 409,
"title": "Conflict",
"type": "http://apache-airflow-docs.s3-website.eu-central-1.amazonaws.com/docs/apache-airflow/latest/stable-rest-api-ref.html#section/Errors/AlreadyExists"
}
```
Thank You
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[GitHub] [airflow] ephraimbuddy commented on issue #15150: "duplicate key value violates unique constraint "dag_run_dag_id_execution_date_key" when triggering a DAG
Posted by GitBox <gi...@apache.org>.
ephraimbuddy commented on issue #15150:
URL: https://github.com/apache/airflow/issues/15150#issuecomment-812847327
> Hi @kaxil and @ephraimbuddy
>
> I am able to reproduce the issue and tried to resolve it.
>
> Below is the error message returned by the `/dagRuns` api. My question is does the below returned message detail text is correct?
> please let me know if it needs some change.
>
> ```js
> {
> "detail": "DAGRun with DAG ID: 'taskflow' and DAGRun ExecutionDate '2021-04-03 07:50:16.317733+00:00' already exists",
> "status": 409,
> "title": "Conflict",
> "type": "http://apache-airflow-docs.s3-website.eu-central-1.amazonaws.com/docs/apache-airflow/latest/stable-rest-api-ref.html#section/Errors/AlreadyExists"
> }
> ```
>
> Thank You
Yes. It is good. Make a PR then if there are any suggestions, we would give
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[GitHub] [airflow] kaxil closed issue #15150: "duplicate key value violates unique constraint "dag_run_dag_id_execution_date_key" when triggering a DAG
Posted by GitBox <gi...@apache.org>.
kaxil closed issue #15150:
URL: https://github.com/apache/airflow/issues/15150
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[GitHub] [airflow] vikramcse commented on issue #15150: "duplicate key value violates unique constraint "dag_run_dag_id_execution_date_key" when triggering a DAG
Posted by GitBox <gi...@apache.org>.
vikramcse commented on issue #15150:
URL: https://github.com/apache/airflow/issues/15150#issuecomment-812819336
@kaxil I would like to work on this issue
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[GitHub] [airflow] kaxil commented on issue #15150: "duplicate key value violates unique constraint "dag_run_dag_id_execution_date_key" when triggering a DAG
Posted by GitBox <gi...@apache.org>.
kaxil commented on issue #15150:
URL: https://github.com/apache/airflow/issues/15150#issuecomment-812701161
The DagRun table has the following constraints:
https://github.com/apache/airflow/blob/83d702c345f8f4ce16d32268f4f83ee508fea676/airflow/models/dagrun.py#L96-L97
which is why you can't create / trigger a DagRun that violates it i.e. you can't trigger a DAG with same execution_date or with same run_id.
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[GitHub] [airflow] kaojunsong commented on issue #15150: "duplicate key value violates unique constraint "dag_run_dag_id_execution_date_key" when triggering a DAG
Posted by GitBox <gi...@apache.org>.
kaojunsong commented on issue #15150:
URL: https://github.com/apache/airflow/issues/15150#issuecomment-812757758
@kaxil Thanks for your reply. I got your point, but the client gets a 500 HTTP code now, and I think it better if it returns 400 or 409 or any other suitable code.
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[GitHub] [airflow] ephraimbuddy commented on issue #15150: "duplicate key value violates unique constraint "dag_run_dag_id_execution_date_key" when triggering a DAG
Posted by GitBox <gi...@apache.org>.
ephraimbuddy commented on issue #15150:
URL: https://github.com/apache/airflow/issues/15150#issuecomment-812820764
> @kaxil I would like to work on this issue
@vikramcse I have assigned it to you
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