[GitHub] [iceberg] rdblue commented on a diff in pull request #5513: Spark 3.3 - Support bucket in FunctionCatalog

[GitBox <gi...@apache.org>]

rdblue commented on code in PR #5513:
URL: https://github.com/apache/iceberg/pull/5513#discussion_r944758537


##########
api/src/main/java/org/apache/iceberg/util/BucketHashUtil.java:
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@@ -0,0 +1,91 @@
+/*
+ * 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.iceberg.util;
+
+import java.math.BigDecimal;
+import java.nio.ByteBuffer;
+import java.nio.charset.StandardCharsets;
+import java.util.UUID;
+import org.apache.iceberg.relocated.com.google.common.hash.HashFunction;
+import org.apache.iceberg.relocated.com.google.common.hash.Hashing;
+
+/**
+ * Contains the logic for hashing various types for use with the {@code bucket} partition
+ * transformations
+ */
+public class BucketHashUtil {
+
+  private static final HashFunction MURMUR3 = Hashing.murmur3_32_fixed();
+
+  private BucketHashUtil() {}
+
+  public static int forInteger(Integer value) {

Review Comment:
   I would normally expect `for` to signal a method that will return something that I use, rather than doing something directly. Since these are all hash methods, what about naming them `hash`?



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