diff --git a/analytical_engine/java/grape-giraph/src/main/java/com/alibaba/graphscope/parallel/mm/impl/GiraphMpiMessageManager.java b/analytical_engine/java/grape-giraph/src/main/java/com/alibaba/graphscope/parallel/mm/impl/GiraphMpiMessageManager.java
index 77989e3e9861..b76c6cf1bc9b 100644
--- a/analytical_engine/java/grape-giraph/src/main/java/com/alibaba/graphscope/parallel/mm/impl/GiraphMpiMessageManager.java
+++ b/analytical_engine/java/grape-giraph/src/main/java/com/alibaba/graphscope/parallel/mm/impl/GiraphMpiMessageManager.java
@@ -118,7 +118,6 @@ public void receiveMessages() {
                 "Frag [{}] totally Received [{}] bytes from others starting deserialization",
                 fragId,
                 bytesOfReceivedMsg);
-        tmpVector.delete();
     }
 
     /**
diff --git a/analytical_engine/java/grape-jdk/src/main/java/com/alibaba/graphscope/serialization/FFIByteVectorOutputStream.java b/analytical_engine/java/grape-jdk/src/main/java/com/alibaba/graphscope/serialization/FFIByteVectorOutputStream.java
index ace7cdee8208..eb62dc095530 100644
--- a/analytical_engine/java/grape-jdk/src/main/java/com/alibaba/graphscope/serialization/FFIByteVectorOutputStream.java
+++ b/analytical_engine/java/grape-jdk/src/main/java/com/alibaba/graphscope/serialization/FFIByteVectorOutputStream.java
@@ -417,9 +417,4 @@ public void write(int b) throws IOException {
         vector.setRawByte(offset, (byte) b);
         offset += 1;
     }
-
-    @Override
-    public void close() throws IOException {
-        vector.delete();
-    }
 }