diff --git a/extensions/impl/kafka/sink.go b/extensions/impl/kafka/sink.go
index 3801fbfa86..fe1384ad20 100644
--- a/extensions/impl/kafka/sink.go
+++ b/extensions/impl/kafka/sink.go
@@ -44,19 +44,14 @@ type KafkaSink struct {
 	LastStats      kafkago.WriterStats
 }
 
-func (k *KafkaSink) ConfigureBatch(batchSize int, lingerInterval time.Duration) {
-	k.kc.WriterConf.BatchSize = batchSize
-	k.kc.WriterConf.BatchTimeout = lingerInterval
-}
-
 type kafkaConf struct {
-	Brokers      string          `json:"brokers"`
-	Topic        string          `json:"topic"`
-	MaxAttempts  int             `json:"maxAttempts"`
-	RequiredACKs int             `json:"requiredACKs"`
-	Key          string          `json:"key"`
-	Headers      interface{}     `json:"headers"`
-	WriterConf   kafkaWriterConf `json:"writerConf"`
+	kafkaWriterConf
+	Brokers      string      `json:"brokers"`
+	Topic        string      `json:"topic"`
+	MaxAttempts  int         `json:"maxAttempts"`
+	RequiredACKs int         `json:"requiredACKs"`
+	Key          string      `json:"key"`
+	Headers      interface{} `json:"headers"`
 
 	// write config
 	Compression string `json:"compression"`
@@ -80,7 +75,7 @@ func (c *kafkaConf) validate() error {
 
 func (k *KafkaSink) Provision(ctx api.StreamContext, configs map[string]any) error {
 	c := getDefaultKafkaConf()
-	err := cast.MapToStruct(configs, c)
+	err := c.configure(configs)
 	failpoint.Inject("kafkaErr", func(val failpoint.Value) {
 		err = mockKakfaSourceErr(val.(int), castConfErr)
 	})
@@ -160,9 +155,9 @@ func (k *KafkaSink) buildKafkaWriter() error {
 		AllowAutoTopicCreation: true,
 		MaxAttempts:            k.kc.MaxAttempts,
 		RequiredAcks:           kafkago.RequiredAcks(k.kc.RequiredACKs),
-		BatchSize:              k.kc.WriterConf.BatchSize,
-		BatchBytes:             k.kc.WriterConf.BatchBytes,
-		BatchTimeout:           k.kc.WriterConf.BatchTimeout,
+		BatchSize:              k.kc.BatchSize,
+		BatchBytes:             k.kc.BatchBytes,
+		BatchTimeout:           k.kc.BatchTimeout,
 		Transport: &kafkago.Transport{
 			SASL: k.mechanism,
 			TLS:  k.tlsConfig,
@@ -348,11 +343,21 @@ func getDefaultKafkaConf() *kafkaConf {
 	c := &kafkaConf{
 		RequiredACKs: -1,
 		MaxAttempts:  1,
-		WriterConf: kafkaWriterConf{
-			BatchSize:    100,
-			BatchTimeout: time.Millisecond,
-			BatchBytes:   1048576,
-		},
+	}
+	c.kafkaWriterConf = kafkaWriterConf{
+		BatchSize:    100,
+		BatchTimeout: time.Microsecond,
+		BatchBytes:   10485760, // 10MB
 	}
 	return c
 }
+
+func (kc *kafkaConf) configure(props map[string]interface{}) error {
+	if err := cast.MapToStruct(props, kc); err != nil {
+		return err
+	}
+	if err := cast.MapToStruct(props, &kc.kafkaWriterConf); err != nil {
+		return err
+	}
+	return nil
+}
diff --git a/internal/topo/planner/planner_sink.go b/internal/topo/planner/planner_sink.go
index 792fc1bd8b..35e8a23318 100644
--- a/internal/topo/planner/planner_sink.go
+++ b/internal/topo/planner/planner_sink.go
@@ -166,27 +166,17 @@ func findTemplateProps(props map[string]any) []string {
 	return result
 }
 
-type BatchsinkAble interface {
-	ConfigureBatch(batchSize int, lingerInterval time.Duration)
-}
-
 // Split sink node according to the sink configuration. Return the new input emitters.
 func splitSink(tp *topo.Topo, s api.Sink, sinkName string, options *def.RuleOption, sc *node.SinkConf, templates []string) ([]node.TopNode, error) {
 	index := 0
 	result := make([]node.TopNode, 0)
-	// Batch enabled
-	bs, ok := s.(BatchsinkAble)
-	if ok {
-		bs.ConfigureBatch(sc.BatchSize, time.Duration(sc.LingerInterval))
-	} else {
-		if sc.BatchSize > 0 || sc.LingerInterval > 0 {
-			batchOp, err := node.NewBatchOp(fmt.Sprintf("%s_%d_batch", sinkName, index), options, sc.BatchSize, time.Duration(sc.LingerInterval))
-			if err != nil {
-				return nil, err
-			}
-			index++
-			result = append(result, batchOp)
+	if sc.BatchSize > 0 || sc.LingerInterval > 0 {
+		batchOp, err := node.NewBatchOp(fmt.Sprintf("%s_%d_batch", sinkName, index), options, sc.BatchSize, time.Duration(sc.LingerInterval))
+		if err != nil {
+			return nil, err
 		}
+		index++
+		result = append(result, batchOp)
 	}
 	// Transform enabled
 	// Currently, the row to map is done here and is required. TODO: eliminate map and this could become optional