content: /*
   * 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.chukwa.extraction.archive;
  
  
  import java.text.SimpleDateFormat;
  import org.apache.hadoop.chukwa.ChukwaArchiveKey;
  import org.apache.hadoop.chukwa.ChunkImpl;
  import org.apache.hadoop.mapred.JobConf;
  import org.apache.hadoop.mapred.Partitioner;
  
  public class ChukwaArchiveDailyPartitioner<K, V> implements
      Partitioner<ChukwaArchiveKey, ChunkImpl> {
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy_MM_dd");
  
    public void configure(JobConf arg0) {
    }
  
    public int getPartition(ChukwaArchiveKey key, ChunkImpl chunl,
        int numReduceTasks) {
  
      return (sdf.format(key.getTimePartition()).hashCode() & Integer.MAX_VALUE)
          % numReduceTasks;
    }
  
  }
  