| /* |
| * 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.drill.exec; |
| |
| import java.util.Random; |
| |
| import org.apache.hadoop.io.BytesWritable; |
| import org.apache.hadoop.util.IndexedSortable; |
| import org.apache.hadoop.util.QuickSort; |
| |
| public class SortTest { |
| private static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(SortTest.class); |
| |
| private static final int RECORD_COUNT = 10*1000*1000; |
| private static final int KEY_SIZE = 10; |
| private static final int DATA_SIZE = 90; |
| private static final int RECORD_SIZE = KEY_SIZE + DATA_SIZE; |
| |
| private byte[] data; |
| |
| public static void main(String[] args) throws Exception{ |
| for(int i =0; i < 100; i++){ |
| SortTest st = new SortTest(); |
| long nanos = st.doSort(); |
| logger.info("Sort Completed in {} ns.", nanos); |
| } |
| } |
| |
| SortTest(){ |
| logger.info("Generating data... "); |
| data = new byte[RECORD_SIZE*RECORD_COUNT]; |
| Random r = new Random(); |
| r.nextBytes(data); |
| logger.info("Data generated. "); |
| } |
| |
| public long doSort(){ |
| QuickSort qs = new QuickSort(); |
| ByteSortable b = new ByteSortable(); |
| long nano = System.nanoTime(); |
| qs.sort(b, 0, RECORD_COUNT); |
| return System.nanoTime() - nano; |
| } |
| |
| private class ByteSortable implements IndexedSortable{ |
| final byte[] space = new byte[RECORD_SIZE]; |
| final BytesWritable.Comparator comparator = new BytesWritable.Comparator(); |
| |
| @Override |
| public int compare(int index1, int index2) { |
| return comparator.compare(data, index1*RECORD_SIZE, KEY_SIZE, data, index2*RECORD_SIZE, KEY_SIZE); |
| } |
| |
| @Override |
| public void swap(int index1, int index2) { |
| int start1 = index1*RECORD_SIZE; |
| int start2 = index2*RECORD_SIZE; |
| System.arraycopy(data, start1, space, 0, RECORD_SIZE); |
| System.arraycopy(data, start2, data, start1, RECORD_SIZE); |
| System.arraycopy(space, 0, data, start2, RECORD_SIZE); |
| } |
| } |
| } |