/tags/release-0.1-rc2/hive/external/ql/src/java/org/apache/hadoop/hive/ql/io/DefaultHivePartitioner.java
Java | 31 lines | 7 code | 5 blank | 19 comment | 0 complexity | ddef550c73761a04e907e6c405837b37 MD5 | raw file
Possible License(s): Apache-2.0, BSD-3-Clause, JSON, CPL-1.0
- /**
- * 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.hadoop.hive.ql.io;
- import org.apache.hadoop.mapred.lib.HashPartitioner;
- /** Partition keys by their {@link Object#hashCode()}. */
- public class DefaultHivePartitioner<K2, V2> extends HashPartitioner<K2, V2> implements HivePartitioner<K2, V2> {
- /** Use {@link Object#hashCode()} to partition. */
- public int getBucket(K2 key, V2 value, int numBuckets) {
- return (key.hashCode() & Integer.MAX_VALUE) % numBuckets;
- }
- }