raise oonimeasurements clickhouse user max memory per query

[aagbsn]

queries to explorer fail when filtering by category_code:
https://explorer.ooni.org/search?since=2026-03-29&until=2026-04-29&failure=false&category_code=GOVT

Server Response

{
  "name": "AxiosError",
  "message": "Network Error",
  "baseURL": "https://api.ooni.org",
  "url": "/api/v1/measurements",
  "params": {
    "category_code": "GOVT",
    "since": "2026-03-29",
    "until": "2026-04-29",
    "failure": false,
    "limit": 50,
    "order": "desc"
  }
}

From the service logs:

	2026-04-27T14:17:01.787Z
	raise packet.exception
	Link
	2026-04-27T14:17:01.788Z
	clickhouse_driver.errors.ServerException: Code: 241.
	Link
	2026-04-27T14:17:01.788Z
	DB::Exception: Memory limit (for query) exceeded: would use 481.78 MiB (attempt to allocate chunk of 4207200 bytes), maximum: 477.79 MiB.: (while reading c
	```

[github-actions]

Ansible Run Output 🤖

Ansible Playbook Recap 🔍

Ansible playbook output 📖success

Show Execution

$ ansible-playbook playbook.yml --check --diff -i ../tf/modules/ansible_inventory/inventories/inventory-dev.ini
[WARNING]: provided hosts list is empty, only localhost is available. Note that the implicit localhost does not match 'all'
[ERROR]: the role 'geerlingguy.docker' was not found in /home/runner/work/devops/devops/ansible/roles:/home/runner/.ansible/roles:/usr/share/ansible/roles:/etc/ansible/roles:/home/runner/work/devops/devops/ansible
Origin: /home/runner/work/devops/devops/ansible/deploy-testlists.yml:16:7

14         node_exporter_host: "0.0.0.0"
15         node_exporter_options: ""
16     - role: geerlingguy.docker
         ^ column 7

Pusher	@aagbsn
Action	pull_request
Working Directory
Workflow	.github/workflows/check_ansible.yml
Last updated	Tue, 28 Apr 2026 13:49:48 GMT

[aagbsn]

Is there a query optimization that should be done instead of raising this limit?