opeida opened a new issue, #56129:
URL: https://github.com/apache/airflow/issues/56129
### Apache Airflow version
3.1.0
### If "Other Airflow 2 version" selected, which one?
_No response_
### What happened?
The API server crashes when the "Users" page is opened. The following error
occurs (the full error listing is provided below):
`sqlalchemy.exc.TimeoutError: QueuePool limit of size 5 overflow 10 reached,
connection timed out, timeout 30.00 `
It may be related to pgbouncer config but it would be great if the API
server handled the error without crashing:
```
pgbouncer:
enabled: true
nodeSelector:
cloud.google.com/gke-nodepool: service-pool
configSecretName: airflow-pgbouncer-config
metricsExporterSidecar:
statsSecretName: airflow-pgbouncer-stats
maxClientConn: 200
metadataPoolSize: 20
resultBackendPoolSize: 5
```
### Screen recording
https://github.com/user-attachments/assets/b009c2dc-4d0e-4db8-9766-de9446167cf4
### What you think should happen instead?
The API server should handle the error without crashing.
### How to reproduce
Setup the env with pgbouncer config provided above, open the Users page and
try to add a user.
### Operating System
Debian GNU/Linux 12 (bookworm)
### Versions of Apache Airflow Providers
apache-airflow-providers-celery==3.12.3
apache-airflow-providers-common-compat==1.7.4
apache-airflow-providers-common-io==1.6.3
apache-airflow-providers-common-sql==1.28.1
apache-airflow-providers-fab==2.4.3
apache-airflow-providers-google==18.0.0
apache-airflow-providers-http==5.3.4
apache-airflow-providers-postgres==6.3.0
apache-airflow-providers-redis==4.3.1
apache-airflow-providers-smtp==2.2.1
apache-airflow-providers-standard==1.8.0
### Deployment
Official Apache Airflow Helm Chart
### Deployment details
Deployed on GKE with extended image based on apache/airflow:slim-3.1.0 and
Helm chart 1.18.0.
Migrated from 3.0.6.
### Anything else?
<details><summary>Log listing</summary>
<p>
2025-09-26T00:52:47.911362Z [error ] Exception on
/static/appbuilder/js/ab.js [GET] [airflow.providers.fab.www.app]
loc=app.py:1744
Traceback (most recent call last):
File "/home/airflow/.local/lib/python3.12/site-packages/flask/app.py",
line 2528, in wsgi_app
ctx.push()
File "/home/airflow/.local/lib/python3.12/site-packages/flask/ctx.py",
line 375, in push
self.session = session_interface.open_session(self.app, self.request)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/flask_session/sessions.py",
line 524, in open_session
session_id=store_id).first()
^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/query.py",
line 2824, in first
return self.limit(1)._iter().first()
^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/query.py",
line 2916, in _iter
result = self.session.execute(
^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1716, in execute
conn = self._connection_for_bind(bind)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1555, in _connection_for_bind
return self._transaction._connection_for_bind(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 750, in _connection_for_bind
conn = bind.connect()
^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3325, in connect
return self._connection_cls(self, close_with_result=close_with_result)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 96, in __init__
else engine.raw_connection()
^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3404, in raw_connection
return self._wrap_pool_connect(self.pool.connect, _connection)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3371, in _wrap_pool_connect
return fn()
^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 327, in connect
return _ConnectionFairy._checkout(self)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 894, in _checkout
fairy = _ConnectionRecord.checkout(pool)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 493, in checkout
rec = pool._do_get()
^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/impl.py",
line 134, in _do_get
raise exc.TimeoutError(
sqlalchemy.exc.TimeoutError: QueuePool limit of size 5 overflow 10 reached,
connection timed out, timeout 30.00 (Background on this error at:
https://sqlalche.me/e/14/3o7r)
2025-09-26T00:52:47.918931Z [error ] Exception on
/static/appbuilder/css/bootstrap-datepicker/bootstrap-datepicker3.min.css [GET]
[airflow.providers.fab.www.app] loc=app.py:1744
Traceback (most recent call last):
File "/home/airflow/.local/lib/python3.12/site-packages/flask/app.py",
line 2528, in wsgi_app
ctx.push()
File "/home/airflow/.local/lib/python3.12/site-packages/flask/ctx.py",
line 375, in push
self.session = session_interface.open_session(self.app, self.request)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/flask_session/sessions.py",
line 524, in open_session
session_id=store_id).first()
^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/query.py",
line 2824, in first
return self.limit(1)._iter().first()
^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/query.py",
line 2916, in _iter
result = self.session.execute(
^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1716, in execute
conn = self._connection_for_bind(bind)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1555, in _connection_for_bind
return self._transaction._connection_for_bind(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 750, in _connection_for_bind
conn = bind.connect()
^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3325, in connect
return self._connection_cls(self, close_with_result=close_with_result)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 96, in __init__
else engine.raw_connection()
^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3404, in raw_connection
return self._wrap_pool_connect(self.pool.connect, _connection)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3371, in _wrap_pool_connect
return fn()
^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 327, in connect
return _ConnectionFairy._checkout(self)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 894, in _checkout
fairy = _ConnectionRecord.checkout(pool)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 493, in checkout
rec = pool._do_get()
^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/impl.py",
line 134, in _do_get
raise exc.TimeoutError(
sqlalchemy.exc.TimeoutError: QueuePool limit of size 5 overflow 10 reached,
connection timed out, timeout 30.00 (Background on this error at:
https://sqlalche.me/e/14/3o7r)
2025-09-26T00:52:47.941897Z [error ] Exception on
/static/dist/jquery-ui.min.js [GET] [airflow.providers.fab.www.app]
loc=app.py:1744
Traceback (most recent call last):
File "/home/airflow/.local/lib/python3.12/site-packages/flask/app.py",
line 2528, in wsgi_app
ctx.push()
File "/home/airflow/.local/lib/python3.12/site-packages/flask/ctx.py",
line 375, in push
self.session = session_interface.open_session(self.app, self.request)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/flask_session/sessions.py",
line 524, in open_session
session_id=store_id).first()
^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/query.py",
line 2824, in first
return self.limit(1)._iter().first()
^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/query.py",
line 2916, in _iter
result = self.session.execute(
^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1716, in execute
conn = self._connection_for_bind(bind)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1555, in _connection_for_bind
return self._transaction._connection_for_bind(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 750, in _connection_for_bind
conn = bind.connect()
^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3325, in connect
return self._connection_cls(self, close_with_result=close_with_result)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 96, in __init__
else engine.raw_connection()
^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3404, in raw_connection
return self._wrap_pool_connect(self.pool.connect, _connection)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3371, in _wrap_pool_connect
return fn()
^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 327, in connect
return _ConnectionFairy._checkout(self)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 894, in _checkout
fairy = _ConnectionRecord.checkout(pool)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 493, in checkout
rec = pool._do_get()
^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/impl.py",
line 134, in _do_get
raise exc.TimeoutError(
sqlalchemy.exc.TimeoutError: QueuePool limit of size 5 overflow 10 reached,
connection timed out, timeout 30.00 (Background on this error at:
https://sqlalche.me/e/14/3o7r)
2025-09-26T00:52:47.957171Z [error ] Exception on
/static/appbuilder/css/fontawesome/solid.min.css [GET]
[airflow.providers.fab.www.app] loc=app.py:1744
Traceback (most recent call last):
File "/home/airflow/.local/lib/python3.12/site-packages/flask/app.py",
line 2528, in wsgi_app
ctx.push()
File "/home/airflow/.local/lib/python3.12/site-packages/flask/ctx.py",
line 375, in push
self.session = session_interface.open_session(self.app, self.request)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/flask_session/sessions.py",
line 524, in open_session
session_id=store_id).first()
^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/query.py",
line 2824, in first
return self.limit(1)._iter().first()
^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/query.py",
line 2916, in _iter
result = self.session.execute(
^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1716, in execute
conn = self._connection_for_bind(bind)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1555, in _connection_for_bind
return self._transaction._connection_for_bind(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 750, in _connection_for_bind
conn = bind.connect()
^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3325, in connect
return self._connection_cls(self, close_with_result=close_with_result)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 96, in __init__
else engine.raw_connection()
^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3404, in raw_connection
return self._wrap_pool_connect(self.pool.connect, _connection)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3371, in _wrap_pool_connect
return fn()
^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 327, in connect
return _ConnectionFairy._checkout(self)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 894, in _checkout
fairy = _ConnectionRecord.checkout(pool)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 493, in checkout
rec = pool._do_get()
^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/impl.py",
line 134, in _do_get
raise exc.TimeoutError(
sqlalchemy.exc.TimeoutError: QueuePool limit of size 5 overflow 10 reached,
connection timed out, timeout 30.00 (Background on this error at:
https://sqlalche.me/e/14/3o7r)
2025-09-26T00:52:47.983286Z [error ] Exception on
/static/appbuilder/js/jquery-latest.js [GET] [airflow.providers.fab.www.app]
loc=app.py:1744
Traceback (most recent call last):
File "/home/airflow/.local/lib/python3.12/site-packages/flask/app.py",
line 2528, in wsgi_app
ctx.push()
File "/home/airflow/.local/lib/python3.12/site-packages/flask/ctx.py",
line 375, in push
self.session = session_interface.open_session(self.app, self.request)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/flask_session/sessions.py",
line 524, in open_session
session_id=store_id).first()
^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/query.py",
line 2824, in first
return self.limit(1)._iter().first()
^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/query.py",
line 2916, in _iter
result = self.session.execute(
^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1716, in execute
conn = self._connection_for_bind(bind)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1555, in _connection_for_bind
return self._transaction._connection_for_bind(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 750, in _connection_for_bind
conn = bind.connect()
^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3325, in connect
return self._connection_cls(self, close_with_result=close_with_result)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 96, in __init__
else engine.raw_connection()
^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3404, in raw_connection
return self._wrap_pool_connect(self.pool.connect, _connection)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3371, in _wrap_pool_connect
return fn()
^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 327, in connect
return _ConnectionFairy._checkout(self)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 894, in _checkout
fairy = _ConnectionRecord.checkout(pool)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 493, in checkout
rec = pool._do_get()
^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/impl.py",
line 134, in _do_get
raise exc.TimeoutError(
sqlalchemy.exc.TimeoutError: QueuePool limit of size 5 overflow 10 reached,
connection timed out, timeout 30.00 (Background on this error at:
https://sqlalche.me/e/14/3o7r)
2025-09-26T00:52:48.695435Z [error ] Unable to retrieve variable from
secrets backend (MetastoreBackend). Checking subsequent secrets backend.
[airflow.models.variable] loc=variable.py:449
Traceback (most recent call last):
File
"/home/airflow/.local/lib/python3.12/site-packages/airflow/models/variable.py",
line 445, in get_variable_from_secrets
var_val = secrets_backend.get_variable(key=key)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/airflow/utils/session.py",
line 100, in wrapper
return func(*args, session=session, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/airflow/secrets/metastore.py",
line 64, in get_variable
var_value = session.scalar(select(Variable).where(Variable.key ==
key).limit(1))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1747, in scalar
return self.execute(
^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1716, in execute
conn = self._connection_for_bind(bind)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1555, in _connection_for_bind
return self._transaction._connection_for_bind(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 750, in _connection_for_bind
conn = bind.connect()
^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/future/engine.py",
line 412, in connect
return super(Engine, self).connect()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3325, in connect
return self._connection_cls(self, close_with_result=close_with_result)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 96, in __init__
else engine.raw_connection()
^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3404, in raw_connection
return self._wrap_pool_connect(self.pool.connect, _connection)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3371, in _wrap_pool_connect
return fn()
^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 327, in connect
return _ConnectionFairy._checkout(self)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 894, in _checkout
fairy = _ConnectionRecord.checkout(pool)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 493, in checkout
rec = pool._do_get()
^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/impl.py",
line 134, in _do_get
raise exc.TimeoutError(
sqlalchemy.exc.TimeoutError: QueuePool limit of size 5 overflow 10 reached,
connection timed out, timeout 30.00 (Background on this error at:
https://sqlalche.me/e/14/3o7r)
2025-09-26T00:52:48.908020Z [error ] Unable to retrieve variable from
secrets backend (MetastoreBackend). Checking subsequent secrets backend.
[airflow.models.variable] loc=variable.py:449
Traceback (most recent call last):
File
"/home/airflow/.local/lib/python3.12/site-packages/airflow/models/variable.py",
line 445, in get_variable_from_secrets
var_val = secrets_backend.get_variable(key=key)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/airflow/utils/session.py",
line 100, in wrapper
return func(*args, session=session, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/airflow/secrets/metastore.py",
line 64, in get_variable
var_value = session.scalar(select(Variable).where(Variable.key ==
key).limit(1))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1747, in scalar
return self.execute(
^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1716, in execute
conn = self._connection_for_bind(bind)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1555, in _connection_for_bind
return self._transaction._connection_for_bind(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 750, in _connection_for_bind
conn = bind.connect()
^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/future/engine.py",
line 412, in connect
return super(Engine, self).connect()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3325, in connect
return self._connection_cls(self, close_with_result=close_with_result)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 96, in __init__
else engine.raw_connection()
^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3404, in raw_connection
return self._wrap_pool_connect(self.pool.connect, _connection)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3371, in _wrap_pool_connect
return fn()
^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 327, in connect
return _ConnectionFairy._checkout(self)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 894, in _checkout
fairy = _ConnectionRecord.checkout(pool)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 493, in checkout
rec = pool._do_get()
^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/impl.py",
line 134, in _do_get
raise exc.TimeoutError(
sqlalchemy.exc.TimeoutError: QueuePool limit of size 5 overflow 10 reached,
connection timed out, timeout 30.00 (Background on this error at:
https://sqlalche.me/e/14/3o7r)
2025-09-26T00:52:49.069771Z [error ] Unable to retrieve variable from
secrets backend (MetastoreBackend). Checking subsequent secrets backend.
[airflow.models.variable] loc=variable.py:449
Traceback (most recent call last):
File
"/home/airflow/.local/lib/python3.12/site-packages/airflow/models/variable.py",
line 445, in get_variable_from_secrets
var_val = secrets_backend.get_variable(key=key)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/airflow/utils/session.py",
line 100, in wrapper
return func(*args, session=session, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/airflow/secrets/metastore.py",
line 64, in get_variable
var_value = session.scalar(select(Variable).where(Variable.key ==
key).limit(1))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1747, in scalar
return self.execute(
^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1716, in execute
conn = self._connection_for_bind(bind)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1555, in _connection_for_bind
return self._transaction._connection_for_bind(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 750, in _connection_for_bind
conn = bind.connect()
^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/future/engine.py",
line 412, in connect
return super(Engine, self).connect()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3325, in connect
return self._connection_cls(self, close_with_result=close_with_result)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 96, in __init__
else engine.raw_connection()
^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3404, in raw_connection
return self._wrap_pool_connect(self.pool.connect, _connection)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3371, in _wrap_pool_connect
return fn()
^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 327, in connect
return _ConnectionFairy._checkout(self)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 894, in _checkout
fairy = _ConnectionRecord.checkout(pool)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 493, in checkout
rec = pool._do_get()
^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/impl.py",
line 134, in _do_get
raise exc.TimeoutError(
sqlalchemy.exc.TimeoutError: QueuePool limit of size 5 overflow 10 reached,
connection timed out, timeout 30.00 (Background on this error at:
https://sqlalche.me/e/14/3o7r)
2025-09-26T00:52:49.441056Z [error ] Unable to retrieve variable from
secrets backend (MetastoreBackend). Checking subsequent secrets backend.
[airflow.models.variable] loc=variable.py:449
Traceback (most recent call last):
File
"/home/airflow/.local/lib/python3.12/site-packages/airflow/models/variable.py",
line 445, in get_variable_from_secrets
var_val = secrets_backend.get_variable(key=key)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/airflow/utils/session.py",
line 100, in wrapper
return func(*args, session=session, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/airflow/secrets/metastore.py",
line 64, in get_variable
var_value = session.scalar(select(Variable).where(Variable.key ==
key).limit(1))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1747, in scalar
return self.execute(
^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1716, in execute
conn = self._connection_for_bind(bind)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 1555, in _connection_for_bind
return self._transaction._connection_for_bind(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/orm/session.py",
line 750, in _connection_for_bind
conn = bind.connect()
^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/future/engine.py",
line 412, in connect
return super(Engine, self).connect()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3325, in connect
return self._connection_cls(self, close_with_result=close_with_result)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 96, in __init__
else engine.raw_connection()
^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3404, in raw_connection
return self._wrap_pool_connect(self.pool.connect, _connection)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/engine/base.py",
line 3371, in _wrap_pool_connect
return fn()
^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 327, in connect
return _ConnectionFairy._checkout(self)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 894, in _checkout
fairy = _ConnectionRecord.checkout(pool)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/base.py",
line 493, in checkout
rec = pool._do_get()
^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.12/site-packages/sqlalchemy/pool/impl.py",
line 134, in _do_get
raise exc.TimeoutError(
sqlalchemy.exc.TimeoutError: QueuePool limit of size 5 overflow 10 reached,
connection timed out, timeout 30.00 (Background on this error at:
https://sqlalche.me/e/14/3o7r)
</p>
</details>
### Are you willing to submit PR?
- [ ] Yes I am willing to submit a PR!
### Code of Conduct
- [x] I agree to follow this project's [Code of
Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)
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