[Azure AI Search] RuntimeWarning: coroutine 'SearchClient.close' was never awaited

[nowjean]

Checked other resources

• I added a very descriptive title to this issue.
• I searched the LangChain documentation with the integrated search.
• I used the GitHub search to find a similar question and didn't find it.
• I am sure that this is a bug in LangChain rather than my code.
• The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package).

Example Code

The following code:

from langchain_community.vectorstores.azuresearch import AzureSearch
  vector_store: AzureSearch = AzureSearch(
            azure_search_endpoint=search_endpoint,
            azure_search_key=azure_search_key,
            azure_ad_access_token=None,
            index_name=index_name,
            embedding_function=aoai_embeddings.embed_query,
            semantic_configuration_name="lseSemanticConfig"
        )

Error Message and Stack Trace (if applicable)

it does RuntimeWarning: coroutine 'SearchClient.close' was never awaited
loop.run_until_complete(self.async_client.close())

Description

I'm trying to using from langchain_community.vectorstores.azuresearch import AzureSearch

I expected to see no error or warning.
Instead, it does RuntimeWarning: coroutine 'SearchClient.close' was never awaited
loop.run_until_complete(self.async_client.close())

Normally, It's okay and working correctly, but when i concurrent request to my endpoint, i got this warnnig.
Can i ignore this code or not?

System Info

System Information

OS: Linux
OS Version: #49~20.04.1-Ubuntu SMP Wed Jul 12 12:44:56 UTC 2023
Python Version: 3.11.9 (main, Apr 6 2024, 17:59:24) [GCC 9.4.0]

Package Information

langchain_core: 0.3.0
langchain: 0.3.0
langchain_community: 0.3.0
langsmith: 0.1.129
langchain_openai: 0.2.0
langchain_text_splitters: 0.3.0
langgraph: Installed. No version info available.

Optional packages not installed

langserve

Other Dependencies

aiohttp: 3.9.5
async-timeout: Installed. No version info available.
dataclasses-json: 0.6.7
httpx: 0.27.0
jsonpatch: 1.33
numpy: 1.26.4
openai: 1.44.0
orjson: 3.10.6
packaging: 24.1
pydantic: 2.8.2
pydantic-settings: 2.5.2
PyYAML: 6.0.1
requests: 2.32.3
SQLAlchemy: 2.0.31
tenacity: 8.5.0
tiktoken: 0.7.0
typing-extensions: 4.12.2

[pokotylo]

Probably related #24921