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https://issues.apache.org/jira/browse/HUDI-1951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17378125#comment-17378125
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ASF GitHub Bot commented on HUDI-1951:
--------------------------------------
leesf commented on a change in pull request #3173:
URL: https://github.com/apache/hudi/pull/3173#discussion_r667023267
##########
File path:
hudi-client/hudi-client-common/src/main/java/org/apache/hudi/utils/HiveBucketUtils.java
##########
@@ -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.hudi.utils;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.regex.Pattern;
+
+import org.apache.hudi.common.fs.FSUtils;
+
+public class HiveBucketUtils {
+ private static final Pattern SPARK_BUCKET_NAME =
Pattern.compile(".*_(\\d+)(?:\\..*)?$");
+
+ public static int mod(int x, int y) {
+ int r = x % y;
+ if (r < 0) {
+ return (r + y) % y;
+ } else {
+ return r;
+ }
+ }
+
+ public static int bucketId(String key, int numBuckets) {
+ return bucketId(Collections.singletonList(key), numBuckets);
+ }
+
+ // copied from spark HiveHashFunction class
+ // see
https://code.byted.org/bytedance/spark/blob/branch-3.0-bd/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/hash.scala
+ public static int bucketId(List<Object> values, int numBuckets) {
+ int hash = 0;
+ for (Object value : values) {
+ hash = 31 * hash;
+ if (value == null) {
+ hash += 0;
+ } else if (value instanceof Boolean) {
+ hash += HiveHasher.hashInt(value.equals(Boolean.TRUE) ? 1 : 0);
+ } else if (value instanceof Integer) {
+ hash += HiveHasher.hashInt((Integer) value);
+ } else if (value instanceof Long) {
+ hash += HiveHasher.hashLong((Long) value);
+ } else if (value instanceof Float) {
+ hash += HiveHasher.hashInt(Float.floatToIntBits((Float) value));
+ } else if (value instanceof Double) {
+ hash += HiveHasher.hashLong(Double.doubleToLongBits((Double) value));
+ } else if (value instanceof String) {
+ byte[] a = value.toString().getBytes();
+ hash += HiveHasher.hashUnsafeBytes(a,
HiveHasher.Platform.BYTE_ARRAY_OFFSET, a.length);
+ } else {
+ throw new RuntimeException("Unsupported type " +
value.getClass().getName());
+ }
+ }
+ return mod(hash & Integer.MAX_VALUE, numBuckets);
+ }
+
+ // uuid 00499982-0f0d-473e-965d-e8a7476ec429
Review comment:
remove this line?
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> Hash Index for HUDI
> -------------------
>
> Key: HUDI-1951
> URL: https://issues.apache.org/jira/browse/HUDI-1951
> Project: Apache Hudi
> Issue Type: New Feature
> Reporter: XiaoyuGeng
> Assignee: XiaoyuGeng
> Priority: Major
> Labels: pull-request-available
>
> https://cwiki.apache.org/confluence/display/HUDI/RFC+-+29%3A+Hash+Index
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