diff --git a/executor/aggfuncs/aggfunc_test.go b/executor/aggfuncs/aggfunc_test.go
index ea2f3540d18a5..368cfc889bd3b 100644
--- a/executor/aggfuncs/aggfunc_test.go
+++ b/executor/aggfuncs/aggfunc_test.go
@@ -241,8 +241,8 @@ type aggMemTest struct {
 	isDistinct         bool
 }
 
-func buildAggMemTester(funcName string, tp byte, numRows int, allocMemDelta int64, updateMemDeltaGens updateMemDeltaGens, isDistinct bool, results ...interface{}) aggMemTest {
-	aggTest := buildAggTester(funcName, tp, numRows, results)
+func buildAggMemTester(funcName string, tp byte, numRows int, allocMemDelta int64, updateMemDeltaGens updateMemDeltaGens, isDistinct bool) aggMemTest {
+	aggTest := buildAggTester(funcName, tp, numRows)
 	pt := aggMemTest{
 		aggTest:            aggTest,
 		allocMemDelta:      allocMemDelta,
diff --git a/executor/aggfuncs/func_avg_test.go b/executor/aggfuncs/func_avg_test.go
index c707619c2deef..09d62dd45168b 100644
--- a/executor/aggfuncs/func_avg_test.go
+++ b/executor/aggfuncs/func_avg_test.go
@@ -45,13 +45,13 @@ func (s *testSuite) TestAvg(c *C) {
 func (s *testSuite) TestMemAvg(c *C) {
 	tests := []aggMemTest{
 		buildAggMemTester(ast.AggFuncAvg, mysql.TypeNewDecimal, 5,
-			aggfuncs.DefPartialResult4AvgDecimalSize, defaultUpdateMemDeltaGens, false, nil, 2.0),
+			aggfuncs.DefPartialResult4AvgDecimalSize, defaultUpdateMemDeltaGens, false),
 		buildAggMemTester(ast.AggFuncAvg, mysql.TypeNewDecimal, 5,
-			aggfuncs.DefPartialResult4AvgDistinctDecimalSize, distinctUpdateMemDeltaGens, true, nil, 2.0),
+			aggfuncs.DefPartialResult4AvgDistinctDecimalSize, distinctUpdateMemDeltaGens, true),
 		buildAggMemTester(ast.AggFuncAvg, mysql.TypeDouble, 5,
-			aggfuncs.DefPartialResult4AvgFloat64Size, defaultUpdateMemDeltaGens, false, nil, 2.0),
+			aggfuncs.DefPartialResult4AvgFloat64Size, defaultUpdateMemDeltaGens, false),
 		buildAggMemTester(ast.AggFuncAvg, mysql.TypeDouble, 5,
-			aggfuncs.DefPartialResult4AvgDistinctFloat64Size, distinctUpdateMemDeltaGens, true, nil, 2.0),
+			aggfuncs.DefPartialResult4AvgDistinctFloat64Size, distinctUpdateMemDeltaGens, true),
 	}
 	for _, test := range tests {
 		s.testAggMemFunc(c, test)
diff --git a/executor/aggfuncs/func_count_test.go b/executor/aggfuncs/func_count_test.go
index f2dccca9a1626..a52f48efa53f3 100644
--- a/executor/aggfuncs/func_count_test.go
+++ b/executor/aggfuncs/func_count_test.go
@@ -22,7 +22,6 @@ import (
 	"github.com/pingcap/parser/ast"
 	"github.com/pingcap/parser/mysql"
 	"github.com/pingcap/tidb/executor/aggfuncs"
-	"github.com/pingcap/tidb/util/israce"
 )
 
 func genApproxDistinctMergePartialResult(begin, end uint64) string {
@@ -103,30 +102,27 @@ func (s *testSuite) TestCount(c *C) {
 }
 
 func (s *testSuite) TestMemCount(c *C) {
-	if israce.RaceEnabled {
-		c.Skip("skip race test")
-	}
 	tests := []aggMemTest{
 		buildAggMemTester(ast.AggFuncCount, mysql.TypeLonglong, 5,
-			aggfuncs.DefPartialResult4CountDistinctIntSize, distinctUpdateMemDeltaGens, true, 0, 5),
+			aggfuncs.DefPartialResult4CountDistinctIntSize, distinctUpdateMemDeltaGens, true),
 		buildAggMemTester(ast.AggFuncCount, mysql.TypeFloat, 5,
-			aggfuncs.DefPartialResult4CountDistinctRealSize, distinctUpdateMemDeltaGens, true, 0, 5),
+			aggfuncs.DefPartialResult4CountDistinctRealSize, distinctUpdateMemDeltaGens, true),
 		buildAggMemTester(ast.AggFuncCount, mysql.TypeDouble, 5,
-			aggfuncs.DefPartialResult4CountDistinctRealSize, distinctUpdateMemDeltaGens, true, 0, 5),
+			aggfuncs.DefPartialResult4CountDistinctRealSize, distinctUpdateMemDeltaGens, true),
 		buildAggMemTester(ast.AggFuncCount, mysql.TypeNewDecimal, 5,
-			aggfuncs.DefPartialResult4CountDistinctDecimalSize, distinctUpdateMemDeltaGens, true, 0, 5),
+			aggfuncs.DefPartialResult4CountDistinctDecimalSize, distinctUpdateMemDeltaGens, true),
 		buildAggMemTester(ast.AggFuncCount, mysql.TypeString, 5,
-			aggfuncs.DefPartialResult4CountDistinctStringSize, distinctUpdateMemDeltaGens, true, 0, 5),
+			aggfuncs.DefPartialResult4CountDistinctStringSize, distinctUpdateMemDeltaGens, true),
 		buildAggMemTester(ast.AggFuncCount, mysql.TypeDate, 5,
-			aggfuncs.DefPartialResult4CountWithDistinctSize, distinctUpdateMemDeltaGens, true, 0, 5),
+			aggfuncs.DefPartialResult4CountWithDistinctSize, distinctUpdateMemDeltaGens, true),
 		buildAggMemTester(ast.AggFuncCount, mysql.TypeDuration, 5,
-			aggfuncs.DefPartialResult4CountDistinctDurationSize, distinctUpdateMemDeltaGens, true, 0, 5),
+			aggfuncs.DefPartialResult4CountDistinctDurationSize, distinctUpdateMemDeltaGens, true),
 		buildAggMemTester(ast.AggFuncCount, mysql.TypeJSON, 5,
-			aggfuncs.DefPartialResult4CountWithDistinctSize, distinctUpdateMemDeltaGens, true, 0, 5),
-		buildAggMemTester(ast.AggFuncApproxCountDistinct, mysql.TypeLonglong, 100000,
-			aggfuncs.DefPartialResult4ApproxCountDistinctSize, approxCountDistinctUpdateMemDeltaGens, true, 0, 100000),
-		buildAggMemTester(ast.AggFuncApproxCountDistinct, mysql.TypeString, 100000,
-			aggfuncs.DefPartialResult4ApproxCountDistinctSize, approxCountDistinctUpdateMemDeltaGens, true, 0, 100000),
+			aggfuncs.DefPartialResult4CountWithDistinctSize, distinctUpdateMemDeltaGens, true),
+		buildAggMemTester(ast.AggFuncApproxCountDistinct, mysql.TypeLonglong, 5,
+			aggfuncs.DefPartialResult4ApproxCountDistinctSize, approxCountDistinctUpdateMemDeltaGens, true),
+		buildAggMemTester(ast.AggFuncApproxCountDistinct, mysql.TypeString, 5,
+			aggfuncs.DefPartialResult4ApproxCountDistinctSize, approxCountDistinctUpdateMemDeltaGens, true),
 	}
 	for _, test := range tests {
 		s.testAggMemFunc(c, test)