/**
* 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.mapred.lib;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.Partitioner;
/**
* Defines a way to partition keys based on certain key fields (also see
* {@link KeyFieldBasedComparator}.
* The key specification supported is of the form -k pos1[,pos2], where,
* pos is of the form f[.c][opts], where f is the number
* of the key field to use, and c is the number of the first character from
* the beginning of the field. Fields and character posns are numbered
* starting with 1; a character position of zero in pos2 indicates the
* field's last character. If '.c' is omitted from pos1, it defaults to 1
* (the beginning of the field); if omitted from pos2, it defaults to 0
* (the end of the field).
*/
@InterfaceAudience.Public
@InterfaceStability.Stable
public class KeyFieldBasedPartitioner<K2, V2> extends
org.apache.hadoop.mapreduce.lib.partition.KeyFieldBasedPartitioner<K2, V2>
implements Partitioner<K2, V2> {
public void configure(JobConf job) {
super.setConf(job);
}
}