zzcclp commented on code in PR #9248:
URL: https://github.com/apache/incubator-gluten/pull/9248#discussion_r2032518426


##########
backends-clickhouse/src-delta-32/main/java/org/apache/gluten/vectorized/DeltaWriterJNIWrapper.java:
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@@ -0,0 +1,42 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.gluten.vectorized;
+
+import org.apache.spark.sql.execution.DeletionVectorWriteTransformer;
+
+public class DeltaWriterJNIWrapper {
+
+    private DeltaWriterJNIWrapper() {
+        // utility class
+    }
+
+    public static native void registerNativeReference();
+
+    public static native long createDeletionVectorWriter(String tablePath, int 
prefix_length, long packingTargetSize);
+
+    public static native void deletionVectorWrite(long writer_address, long 
block_address);
+
+    public static native long deletionVectorWriteFinalize(long writer_address);
+
+    public static String encodeUUID(String uuid, String randomPrefix) {
+        return DeletionVectorWriteTransformer.encodeUUID(uuid, randomPrefix);

Review Comment:
   call the java api from the native to generate the uuid ?



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