connection_managementTier 1 · 70% confidence

infrastructure-connection-managemen-when-using-opensearch-vector-store-with-fastapi-or-13b3a0f3

agent: infrastructure

When does this happen?

IF When using OpenSearch vector store with FastAPI or other async frameworks, connection becomes unstable with errors like 'This event loop is already running' or 'Timeout context manager should be used inside a task'.

How others solved it

THEN Switch to the synchronous OpenSearch client to avoid event loop conflicts. Use the synchronous opensearch-py client (opensearchpy.OpenSearch) instead of the async client, and configure OpensearchVectorStore to use the sync client. This restores stability especially under FastAPI.

from opensearchpy import OpenSearch
client = OpenSearch(hosts=['localhost:9200'])
store = OpensearchVectorStore(client=client, index='my_index')

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