[Bug]: client/server mode RuntimeError: coroutine raised StopIteration

[iessi12]

What happened?

It is used in client/server mode.

        client = chromadb.HttpClient(
            host="x.x.x.x",
            port=8000,
            settings=Settings(
                anonymized_telemetry=False,
            ),
        )

    db = Chroma(
        embedding_function=embeddings,
        client=client,
        collection_metadata={"hnsw:space": "cosine"},
    )

After creating a collection with db.add_documents(), I get an error when deleting it with db.delete_collection().
When I delete it, db._collection.count() is set to 0, but I still get an error.

RuntimeError: coroutine raised StopIteration

Versions

client
Chroma 0.5.0
Python 3.11.9
langchain 0.1.13

server
Chroma 0.5.0
Python 3.11.9

Relevant log output

No response

[sanketkedia]

@iessi12 can you provide a minimal repro of this. I would like to repro and debug. I can't repro locally

[iessi12]

Now you can reproduce it.

print(f"before delete collection count:{db._collection.count()}")
db.delete_collection()
print(f"after delete collection count:{db._collection.count()}")

It seems that calling db._collection.count() after db.delete_collection() causes an error.

[tazarov]

hey @iessi12, ok I see where the issues are. One is on Chroma side and another in Langchain🦜🔗.

The problem with Langchain🦜🔗 and the fact that a reference to the original collection, including its id (UUIDv4), is kept even after a delete_colection() call. So a subsequent call to count() results in a query to Chroma with a collection ID that doesn't exist.

The above leads to the problem in Chroma and it is more related to validation rather than an actual functional error.

We'll fix both of these ASAP. Thank you for reporting this.

[tazarov]

The second problem with the validation was addressed already in #2048 (not in 0.5.0 release)

[sanketkedia]

Nice! Thanks @iessi12 for reporting and @tazarov for fixing this promptly. Closing this GHI then.

[iessi12]

I appreciate your cooperation.