lightning: revert db timeout changes for analyze (#41012)

close #40941

Author: lichunzhu

br/pkg/lightning/common/util.go

@@ -44,8 +44,6 @@ const (
 	retryTimeout = 3 * time.Second
 
 	defaultMaxRetry = 3
-
-	dbTimeout = 30 * time.Second
 )
 
 // MySQLConnectParam records the parameters needed to connect to a MySQL database.
@@ -76,8 +74,6 @@ func (param *MySQLConnectParam) ToDriverConfig() *mysql.Config {
 	cfg.Params["charset"] = "utf8mb4"
 	cfg.Params["sql_mode"] = fmt.Sprintf("'%s'", param.SQLMode)
 	cfg.MaxAllowedPacket = int(param.MaxAllowedPacket)
-	cfg.ReadTimeout = dbTimeout
-	cfg.WriteTimeout = dbTimeout
 
 	cfg.TLS = param.TLSConfig
 	cfg.AllowFallbackToPlaintext = param.AllowFallbackToPlaintext

br/pkg/lightning/config/config_test.go

@@ -764,7 +764,7 @@ func TestLoadConfig(t *testing.T) {
 	err = taskCfg.Adjust(context.Background())
 	require.NoError(t, err)
 	equivalentDSN := taskCfg.Checkpoint.MySQLParam.ToDriverConfig().FormatDSN()
-	expectedDSN := "guest:12345@tcp(172.16.30.11:4001)/?readTimeout=30s&writeTimeout=30s&maxAllowedPacket=67108864&charset=utf8mb4&sql_mode=%27ONLY_FULL_GROUP_BY%2CSTRICT_TRANS_TABLES%2CNO_ZERO_IN_DATE%2CNO_ZERO_DATE%2CERROR_FOR_DIVISION_BY_ZERO%2CNO_AUTO_CREATE_USER%2CNO_ENGINE_SUBSTITUTION%27"
+	expectedDSN := "guest:12345@tcp(172.16.30.11:4001)/?maxAllowedPacket=67108864&charset=utf8mb4&sql_mode=%27ONLY_FULL_GROUP_BY%2CSTRICT_TRANS_TABLES%2CNO_ZERO_IN_DATE%2CNO_ZERO_DATE%2CERROR_FOR_DIVISION_BY_ZERO%2CNO_AUTO_CREATE_USER%2CNO_ENGINE_SUBSTITUTION%27"
 	require.Equal(t, expectedDSN, equivalentDSN)
 
 	result := taskCfg.String()

br/pkg/lightning/config/const.go

@@ -41,8 +41,8 @@ const (
 
 var (
 	DefaultGrpcKeepaliveParams = grpc.WithKeepaliveParams(keepalive.ClientParameters{
-		Time:                10 * time.Second,
-		Timeout:             20 * time.Second,
+		Time:                1 * time.Minute,
+		Timeout:             2 * time.Minute,
 		PermitWithoutStream: false,
 	})
 )