diff --git a/profiler/src/main/java/com/navercorp/pinpoint/profiler/context/grpc/GrpcSpanMessageConverter.java b/profiler/src/main/java/com/navercorp/pinpoint/profiler/context/grpc/GrpcSpanMessageConverter.java
index 53e05b86515c..63c9307e2471 100644
--- a/profiler/src/main/java/com/navercorp/pinpoint/profiler/context/grpc/GrpcSpanMessageConverter.java
+++ b/profiler/src/main/java/com/navercorp/pinpoint/profiler/context/grpc/GrpcSpanMessageConverter.java
@@ -91,8 +91,7 @@ public GrpcSpanMessageConverter(String agentId, short applicationServiceType,
     public GeneratedMessageV3 toMessage(SpanType message) {
         if (message instanceof SpanChunk) {
             final SpanChunk spanChunk = (SpanChunk) message;
-            final PSpanChunk pSpanChunk = buildPSpanChunk(spanChunk);
-            return pSpanChunk;
+            return buildPSpanChunk(spanChunk);
         }
         if (message instanceof Span) {
             final Span span = (Span) message;
@@ -246,8 +245,8 @@ private List<PSpanEvent> buildPSpanEventList(List<SpanEvent> spanEventList) {
         final int eventSize = spanEventList.size();
         final List<PSpanEvent> pSpanEventList = new ArrayList<>(eventSize);
         for (SpanEvent spanEvent : spanEventList) {
-            final PSpanEvent.Builder pSpanEvent = buildPSpanEvent(spanEvent);
-            pSpanEventList.add(pSpanEvent.build());
+            final PSpanEvent pSpanEvent = buildPSpanEvent(spanEvent);
+            pSpanEventList.add(pSpanEvent);
         }
         return pSpanEventList;
     }
@@ -298,50 +297,53 @@ PSpanChunk buildPSpanChunk(SpanChunk spanChunk) {
     }
 
     @VisibleForTesting
-    public PSpanEvent.Builder buildPSpanEvent(SpanEvent spanEvent) {
-        final PSpanEvent.Builder pSpanEvent = getSpanEventBuilder();
-
+    public PSpanEvent buildPSpanEvent(SpanEvent spanEvent) {
+        final PSpanEvent.Builder builder = this.pSpanEventBuilder;
+        try {
 //        if (spanEvent.getStartElapsed() != 0) {
-//          tSpanEvent.setStartElapsed(spanEvent.getStartElapsed());
+//          builder.setStartElapsed(spanEvent.getStartElapsed());
 //        }
 //        tSpanEvent.setStartElapsed(spanEvent.getStartElapsed());
-        if (spanEvent.getElapsedTime() != 0) {
-            pSpanEvent.setEndElapsed(spanEvent.getElapsedTime());
-        }
-        pSpanEvent.setSequence(spanEvent.getSequence());
-//        tSpanEvent.setRpc(spanEvent.getRpc());
-        pSpanEvent.setServiceType(spanEvent.getServiceType());
+            if (spanEvent.getElapsedTime() != 0) {
+                builder.setEndElapsed(spanEvent.getElapsedTime());
+            }
+            builder.setSequence(spanEvent.getSequence());
+//        builder.setRpc(spanEvent.getRpc());
+            builder.setServiceType(spanEvent.getServiceType());
 
-        //        tSpanEvent.setAnnotations();
-        if (spanEvent.getDepth() != -1) {
-            pSpanEvent.setDepth(spanEvent.getDepth());
-        }
+            //        tSpanEvent.setAnnotations();
+            if (spanEvent.getDepth() != -1) {
+                builder.setDepth(spanEvent.getDepth());
+            }
 
-        pSpanEvent.setApiId(spanEvent.getApiId());
+            builder.setApiId(spanEvent.getApiId());
 
-        final IntStringValue exceptionInfo = spanEvent.getExceptionInfo();
-        if (exceptionInfo != null) {
-            PIntStringValue pIntStringValue = buildPIntStringValue(exceptionInfo);
-            pSpanEvent.setExceptionInfo(pIntStringValue);
-        }
+            final IntStringValue exceptionInfo = spanEvent.getExceptionInfo();
+            if (exceptionInfo != null) {
+                PIntStringValue pIntStringValue = buildPIntStringValue(exceptionInfo);
+                builder.setExceptionInfo(pIntStringValue);
+            }
 
-        final PNextEvent nextEvent = buildNextEvent(spanEvent);
-        if (nextEvent != null) {
-            pSpanEvent.setNextEvent(nextEvent);
-        }
-        final AsyncId asyncIdObject = spanEvent.getAsyncIdObject();
-        if (asyncIdObject != null) {
-            pSpanEvent.setAsyncEvent(asyncIdObject.getAsyncId());
-        }
+            final PNextEvent nextEvent = buildNextEvent(spanEvent);
+            if (nextEvent != null) {
+                builder.setNextEvent(nextEvent);
+            }
+            final AsyncId asyncIdObject = spanEvent.getAsyncIdObject();
+            if (asyncIdObject != null) {
+                builder.setAsyncEvent(asyncIdObject.getAsyncId());
+            }
 
 
-        final List<Annotation<?>> annotations = spanEvent.getAnnotations();
-        if (CollectionUtils.hasLength(annotations)) {
-            final List<PAnnotation> pAnnotations = buildPAnnotation(annotations);
-            pSpanEvent.addAllAnnotation(pAnnotations);
-        }
+            final List<Annotation<?>> annotations = spanEvent.getAnnotations();
+            if (CollectionUtils.hasLength(annotations)) {
+                final List<PAnnotation> pAnnotations = buildPAnnotation(annotations);
+                builder.addAllAnnotation(pAnnotations);
+            }
 
-        return pSpanEvent;
+            return builder.build();
+        } finally {
+            builder.clear();
+        }
     }
 
     private PNextEvent buildNextEvent(SpanEvent spanEvent) {
@@ -391,28 +393,26 @@ private PIntStringValue buildPIntStringValue(IntStringValue exceptionInfo) {
 
     @VisibleForTesting
     List<PAnnotation> buildPAnnotation(List<Annotation<?>> annotations) {
-        final List<PAnnotation> tAnnotationList = new ArrayList<>(annotations.size());
-        for (Annotation<?> annotation : annotations) {
-            final PAnnotation.Builder builder = getAnnotationBuilder();
+            final List<PAnnotation> tAnnotationList = new ArrayList<>(annotations.size());
+            for (Annotation<?> annotation : annotations) {
+                PAnnotation pAnnotation = buildPAnnotation0(annotation);
+                tAnnotationList.add(pAnnotation);
+            }
+            return tAnnotationList;
+    }
+
+    private PAnnotation buildPAnnotation0(Annotation<?> annotation) {
+        final PAnnotation.Builder builder = this.pAnnotationBuilder;
+        try {
             builder.setKey(annotation.getKey());
             final PAnnotationValue pAnnotationValue = grpcAnnotationValueMapper.buildPAnnotationValue(annotation);
             if (pAnnotationValue != null) {
                 builder.setValue(pAnnotationValue);
             }
-            PAnnotation pAnnotation = builder.build();
-            tAnnotationList.add(pAnnotation);
+            return builder.build();
+        } finally {
+            builder.clear();
         }
-        return tAnnotationList;
-    }
-
-    private PAnnotation.Builder getAnnotationBuilder() {
-        this.pAnnotationBuilder.clear();
-        return pAnnotationBuilder;
-    }
-
-    private PSpanEvent.Builder getSpanEventBuilder() {
-        pSpanEventBuilder.clear();
-        return pSpanEventBuilder;
     }
 
     @Override
diff --git a/profiler/src/test/java/com/navercorp/pinpoint/profiler/context/compress/GrpcSpanProcessorV2Test.java b/profiler/src/test/java/com/navercorp/pinpoint/profiler/context/compress/GrpcSpanProcessorV2Test.java
index c2f60cdc456f..267971f203c9 100644
--- a/profiler/src/test/java/com/navercorp/pinpoint/profiler/context/compress/GrpcSpanProcessorV2Test.java
+++ b/profiler/src/test/java/com/navercorp/pinpoint/profiler/context/compress/GrpcSpanProcessorV2Test.java
@@ -77,7 +77,7 @@ public void postProcess() {
 
         PSpan.Builder builder = PSpan.newBuilder();
         for (SpanEvent spanEvent : span.getSpanEventList()) {
-            PSpanEvent.Builder pSpanEvent = converter.buildPSpanEvent(spanEvent);
+            PSpanEvent pSpanEvent = converter.buildPSpanEvent(spanEvent);
             builder.addSpanEvent(pSpanEvent);
         }