enhance:refine the range of chunk size config value(#29388) (#29389)

related: #29388

Signed-off-by: MrPresent-Han <chun.han@zilliz.com>

configs/milvus.yaml

@@ -287,7 +287,7 @@ queryNode:
     # Use more threads to make better use of SSD throughput in disk index.
     # This parameter is only useful when enable-disk = true.
     # And this value should be a number greater than 1 and less than 32.
-    chunkRows: 1024 # The number of vectors in a chunk.
+    chunkRows: 128 # The number of vectors in a chunk.
     exprEvalBatchSize: 8192 # The batch size for executor get next
     interimIndex: # build a vector temperate index for growing segment or binlog to accelerate search
       enableIndex: true

pkg/util/paramtable/component_param.go

@@ -1810,10 +1810,10 @@ func (p *queryNodeConfig) init(base *BaseTable) {
 	p.ChunkRows = ParamItem{
 		Key:          "queryNode.segcore.chunkRows",
 		Version:      "2.0.0",
-		DefaultValue: "1024",
+		DefaultValue: "128",
 		Formatter: func(v string) string {
-			if getAsInt(v) < 1024 {
-				return "1024"
+			if getAsInt(v) < 128 {
+				return "128"
 			}
 			return v
 		},

pkg/util/paramtable/component_param_test.go

@@ -298,7 +298,7 @@ func TestComponentParam(t *testing.T) {
 
 		// test query side config
 		chunkRows := Params.ChunkRows.GetAsInt64()
-		assert.Equal(t, int64(1024), chunkRows)
+		assert.Equal(t, int64(128), chunkRows)
 
 		nlist := Params.InterimIndexNlist.GetAsInt64()
 		assert.Equal(t, int64(128), nlist)
@@ -339,7 +339,7 @@ func TestComponentParam(t *testing.T) {
 		params.Remove("queryNode.segcore.growing.nprobe")
 		params.Save("queryNode.segcore.chunkRows", "64")
 		chunkRows = Params.ChunkRows.GetAsInt64()
-		assert.Equal(t, int64(1024), chunkRows)
+		assert.Equal(t, int64(128), chunkRows)
 
 		params.Save("queryNode.gracefulStopTimeout", "100")
 		gracefulStopTimeout := &Params.GracefulStopTimeout