/*
* 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.pig.test.utils;
import java.util.HashMap;
import java.util.Map;
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.mapreduce.Partitioner;
import org.apache.pig.impl.io.PigNullableWritable;
public class SimpleCustomPartitioner2 extends Partitioner<PigNullableWritable, Writable> {
static Map<Integer, Integer> alternateMap = new HashMap<Integer, Integer>();
@Override
public int getPartition(PigNullableWritable key, Writable value, int numPartitions) {
if(key.getValueAsPigType() instanceof Integer) {
int i = ((Integer)key.getValueAsPigType()).intValue();
if (alternateMap.containsKey(i)) {
int red = alternateMap.get(i);
if (red==0) {
alternateMap.put(i, 1);
} else {
alternateMap.put(i, 0);
}
return red % numPartitions;
} else {
alternateMap.put(i, 1);
return 0;
}
}
else {
return (key.hashCode()) % numPartitions;
}
}
}