Disable search params rewrite while searching with filter (#24625)

Signed-off-by: chasingegg <chao.gao@zilliz.com>

internal/querynodev2/handlers.go

@@ -271,11 +271,13 @@ func (node *QueryNode) optimizeSearchParams(ctx context.Context, req *querypb.Se
 		}, 0)
 		// use shardNum * segments num in shard to estimate total segment number
 		estSegmentNum := sealedNum * int(channelNum)
+		withFilter := (plan.GetVectorAnns().GetPredicates() == nil)
 		queryInfo := plan.GetVectorAnns().GetQueryInfo()
 		params := map[string]any{
 			common.TopKKey:        queryInfo.GetTopk(),
 			common.SearchParamKey: queryInfo.GetSearchParams(),
 			common.SegmentNumKey:  estSegmentNum,
+			common.WithFilterKey:  withFilter,
 		}
 		err := node.queryHook.Run(params)
 		if err != nil {

pkg/common/common.go

@@ -86,6 +86,7 @@ const (
 	TopKKey        = "topk"
 	SearchParamKey = "search_param"
 	SegmentNumKey  = "segment_num"
+	WithFilterKey  = "with_filter"
 
 	IndexParamsKey = "params"
 	IndexTypeKey   = "index_type"