Milvus Exception w/ EmbeddingRetriever and a DocumentSearchPipeline

[wilsonlimaneto]

Hello, I have been running some code using Haystack and Milvus. A first I got it to work, and I was pretty amazed with it. But then, I started getting this weird exception related to Milvus, whenever I want to run a query over a DocumentSearchPipeline. Did anyone face that kind of thing?

Well I am using EmbeddingRetriever, Milvus2DocStore and Milvus 2.1:
ERROR:pymilvus.decorators:RPC error: [search], <MilvusException: (code=1, message=fail to search on all shard leaders, err=fail to Search, QueryNode ID=124, reason=Search 124 failed, reason [UnexpectedError] Assert "false" at /root/milvusdeb-2.1/milvus-deb-2.1.2/milvus/internal/core/src/query/SearchOnSealed.cpp:56 => Error in void knowhere::CheckIntegerRange(const Config&, const string&, int64_t, int64_t) at ConfAdapter.cpp:53: Param 'nprobe' not exist err %!w(<nil>))>, <Time:{'RPC start': '2022-10-11 01:09:04.139121', 'RPC error': '2022-10-11 01:09:04.301763'}>
Thanks!

[julian-risch]

Hi @wilsonlimaneto unfortunately, I haven't seen this error before but I still have one suggestion. Maybe you could post your question also in the milvus repository here so that you question becomes more visible to milvus experts: https://github.com/milvus-io/milvus 🙂
To me, the error message looks a bit similar to this issue but I might be wrong: milvus-io/milvus#19344

[Chriszhangmw]

Hi, did you fix it? I got the same error

[wilsoneto-maestria]

As far as I remember I was using wrong milvus documentstore params and indexes.