Cai Yudong

should be fixed with knowhere-v2.1.1 related PR: https://github.com/milvus-io/knowhere/pull/783

similar as #22403

``` Assert "failed to search, not match the error type in knowhere" at /home/caiyd/vec/milvus/internal/core/src/index/VectorMemIndex.cpp:116 [2023/03/24 17:50:48.512 +08:00] [DEBUG] [querynode/segment.go:337] [tr/cgoSearch] [traceID=f03effdc4742fcdc816ebafd3c5e9c80] [msg="finish cgoSearch"] [duration=2.328878ms] [2023/03/24 17:50:48.512 +08:00] [WARN] [querynode/cgo_helper.go:57] ["Search...

/assign @Presburger

/unassign

I have checked the code, since Milvus 1.x, we have not limitation for the parameter "search_k". It's valid range scope is MIN_INT64 ~ MAX_INT64. Don't know where the doc coming...

I have checked ANNOY official website in github (https://github.com/spotify/annoy), the description for parameter "search_k" is as following:  So change "search_k" range scope to [k, MAX_INT64].

fixed with https://github.com/milvus-io/knowhere/pull/601

/assign @congqixia

/assign