Nothing in flatnode folder after planet import on version 4.5

[baxpick]

Hello,

I am wondering if this is normal or a bug - my flatnode folder is empty and it takes 25 minutes to warm database...

I am using version 4.5 and completed planet import after 4-5 days.

After, I got a good response (status 200) and after some time error:

2024-12-09 15:13:22.146 UTC [20919] LOG:  checkpoint starting: time
2024-12-09 15:13:22.539 UTC [20919] LOG:  checkpoint complete: wrote 6 buffers (0.0%); 0 WAL file(s) added, 0 removed, 0 recycled; write=0.336 s, sync=0.021 s, total=0.394 s; sync files=53, longest=0.007 s, average=0.001 s; distance=1723 kB, estimate=1723 kB; lsn=14B/8AFA54B0, redo lsn=14B/8AFA5478
[2024-12-09 16:02:05 +0000] [20970] [ERROR] Exception in ASGI application
Traceback (most recent call last):
File "/usr/local/lib/python3.12/dist-packages/uvicorn/protocols/http/h11_impl.py", line 406, in run_asgi
result = await app(  # type: ignore[func-returns-value]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.12/dist-packages/uvicorn/middleware/proxy_headers.py", line 60, in call
return await self.app(scope, receive, send)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.12/dist-packages/falcon/asgi/app.py", line 424, in call
spec_version = _validate_asgi_scope(scope_type, spec_version, http_version)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.12/dist-packages/falcon/asgi/_asgi_helpers.py", line 36, in _validate_asgi_scope
raise UnsupportedError(
falcon.errors.UnsupportedError: The ASGI "http" scope does not support HTTP version 2.0.
[2024-12-09 17:04:50 +0000] [20970] [WARNING] Invalid HTTP request received.
[2024-12-09 17:04:50 +0000] [20970] [WARNING] Invalid HTTP request received.

then I did:

sudo docker stop nominatim
sudo docker rm nominatim

and restarted with:

sudo docker run 
-v ${my_FLATNODE_PATH}:/nominatim/flatnode 
-v ${my_DATABASE_PATH}:/var/lib/postgresql/${my_POSTGRES_VERSION}/main 
-e POSTGRES_SHARED_BUFFERS=8GB 
-e POSTGRES_MAINTENANCE_WORK_MEM=40GB 
-e POSTGRES_AUTOVACUUM_WORK_MEM=8GB 
-e POSTGRES_WORK_MEM=200MB 
-e POSTGRES_EFFECTIVE_CACHE_SIZE=96GB 
-e POSTGRES_SYNCHRONOUS_COMMIT=off 
-e POSTGRES_MAX_WAL_SIZE=4GB 
-e POSTGRES_CHECKPOINT_TIMEOUT=20min 
-e POSTGRES_CHECKPOINT_COMPLETION_TARGET=0.9 
-e PBF_URL=${my_PBF_URL} 
-e UPDATE_MODE=none 
-e FREEZE=true 
-e REVERSE_ONLY=false 
-e IMPORT_WIKIPEDIA=true 
-e IMPORT_US_POSTCODES=true 
-e IMPORT_GB_POSTCODES=true 
-e IMPORT_STYLE=full 
-e IMPORT_TIGER_ADDRESSES=true 
-e THREADS=$(nproc) 
--shm-size=64g 
-e NOMINATIM_PASSWORD=${my_NOMINATIM_PASSWORD} 
-p 8080:8080 
--name nominatim 
mediagis/nominatim:${my_NOMINATIM_VERSION} &

Then a "Warming database caches" message showed and it worked for about 25 minutes after which I can again access the service.

Why is this message there every time and why does it take 25 minutes to start?

Why is flatnode folder empty and does it have something to do with this warming the database?

What is the error I saw in the logs?