Skip to content

RuntimeError in __init_clients_if_needed in case I/O takes longer than expected to return #1292

@sambuc

Description

@sambuc
│ data-service 2026-01-13T09:10:59.845621 [ERROR] 22/MainThread sanic.error (error.py:203) [c4327b35-7c32-3f18-1922-0de927cf0401] - Exception occurred while handling uri: 'https://renkulab.io/api/data/notebooks/servers'                                   │
│ data-service Traceback (most recent call last):                                                                                                                                                                                                             │
│ data-service   File "handle_request", line 100, in handle_request                                                                                                                                                                                           │
│ data-service     Extend = TypeVar("Extend", type)  # type: ignore                                                                                                                                                                                           │
│ data-service                        ^^^^^^^^^^^^^^                                                                                                                                                                                                          │
│ data-service   File "/app/env/lib/python3.13/site-packages/renku_data_services/base_api/auth.py", line 36, in decorated_function                                                                                                                            │
│ data-service     response = await f(request, user, *args, **kwargs)                                                                                                                                                                                         │
│ data-service                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                                                                                                                                                                                         │
│ data-service   File "/app/env/lib/python3.13/site-packages/renku_data_services/notebooks/blueprints.py", line 71, in _user_servers                                                                                                                          │
│ data-service     filtered_servers = await core.user_servers(self.nb_config, user, filter_attrs)                                                                                                                                                             │
│ data-service                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                                                                                                                                                             │
│ data-service   File "/app/env/lib/python3.13/site-packages/renku_data_services/notebooks/core.py", line 83, in user_servers                                                                                                                                 │
│ data-service     UserServerManifest(s, config.sessions.default_image) for s in await config.k8s_client.list_sessions(user.id)                                                                                                                               │
│ data-service                                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                                                                                                                               │
│ data-service   File "/app/env/lib/python3.13/site-packages/renku_data_services/notebooks/api/classes/k8s_client.py", line 197, in list_sessions                                                                                                             │
│ data-service     sessions = [                                                                                                                                                                                                                               │
│ data-service                ^                                                                                                                                                                                                                               │
│ data-service     ...<8 lines>...                                                                                                                                                                                                                            │
│ data-service     ]                                                                                                                                                                                                                                          │
│ data-service     ^                                                                                                                                                                                                                                          │
│ data-service   File "/app/env/lib/python3.13/site-packages/renku_data_services/k8s/clients.py", line 460, in list                                                                                                                                           │
│ data-service     await self.__init_clients_if_needed()                                                                                                                                                                                                      │
│ data-service   File "/app/env/lib/python3.13/site-packages/renku_data_services/k8s/clients.py", line 420, in __init_clients_if_needed                                                                                                                       │
│ data-service     async for cluster in self.__clusters:                                                                                                                                                                                                      │
│ data-service         self.__clients[cluster.get_cluster().id] = cluster                                                                                                                                                                                     │
│ data-service RuntimeError: anext(): asynchronous generator is already running

__init_clients_if_needed should prevent two async calls from trying to use the generator.

Metadata

Metadata

Assignees

No one assigned

    Labels

    No labels
    No labels

    Type

    No type
    No fields configured for issues without a type.

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions