[GitHub] [spark] pengbo commented on a change in pull request #24340: [Spark-27416][SQL]UnsafeMapData & UnsafeArrayData Kryo serialization breaks when two machines have different Oops size

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pengbo commented on a change in pull request #24340: [Spark-27416][SQL]UnsafeMapData & UnsafeArrayData Kryo serialization breaks when two machines have different Oops size
URL: https://github.com/apache/spark/pull/24340#discussion_r274403322
 
 

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 File path: sql/catalyst/src/main/java/org/apache/spark/sql/catalyst/expressions/UnsafeDataUtils.java
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 @@ -0,0 +1,38 @@
+/*
+ * 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.spark.sql.catalyst.expressions;
+
+import org.apache.spark.unsafe.Platform;
+
+/**
+ * General utilities available for unsafe data
+ */
+public class UnsafeDataUtils {
+
+    public static byte[] getBytes(Object baseObject, long baseOffset, int sizeInBytes) {
+        if (baseObject instanceof byte[]
+                && baseOffset == Platform.BYTE_ARRAY_OFFSET
+                && (((byte[]) baseObject).length == sizeInBytes)) {
+            return (byte[]) baseObject;
+        } else {
 
 Review comment:
   Thanks for pointing that out, free really happy to reduct one line of code.

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