| |
| /** |
| * 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.gridmix; |
| |
| import java.util.Random; |
| |
| import org.junit.Test; |
| import static org.junit.Assert.*; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.io.DataOutputBuffer; |
| |
| public class TestRecordFactory { |
| private static final Log LOG = LogFactory.getLog(TestRecordFactory.class); |
| |
| public static void testFactory(long targetBytes, long targetRecs) |
| throws Exception { |
| final Configuration conf = new Configuration(); |
| final GridmixKey key = new GridmixKey(); |
| final GridmixRecord val = new GridmixRecord(); |
| LOG.info("Target bytes/records: " + targetBytes + "/" + targetRecs); |
| final RecordFactory f = new AvgRecordFactory(targetBytes, targetRecs, conf); |
| targetRecs = targetRecs <= 0 && targetBytes >= 0 |
| ? Math.max(1, |
| targetBytes |
| / conf.getInt(AvgRecordFactory.GRIDMIX_MISSING_REC_SIZE, |
| 64 * 1024)) |
| : targetRecs; |
| |
| long records = 0L; |
| final DataOutputBuffer out = new DataOutputBuffer(); |
| while (f.next(key, val)) { |
| ++records; |
| key.write(out); |
| val.write(out); |
| } |
| assertEquals(targetRecs, records); |
| assertEquals(targetBytes, out.getLength()); |
| } |
| |
| @Test |
| public void testRandom() throws Exception { |
| final Random r = new Random(); |
| final long targetBytes = r.nextInt(1 << 20) + 3 * (1 << 14); |
| final long targetRecs = r.nextInt(1 << 14); |
| testFactory(targetBytes, targetRecs); |
| } |
| |
| @Test |
| public void testAvg() throws Exception { |
| final Random r = new Random(); |
| final long avgsize = r.nextInt(1 << 10) + 1; |
| final long targetRecs = r.nextInt(1 << 14); |
| testFactory(targetRecs * avgsize, targetRecs); |
| } |
| |
| @Test |
| public void testZero() throws Exception { |
| final Random r = new Random(); |
| final long targetBytes = r.nextInt(1 << 20); |
| testFactory(targetBytes, 0); |
| } |
| } |