| /** |
| * 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; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.io.OutputStream; |
| import java.io.OutputStreamWriter; |
| import java.io.Writer; |
| import java.util.Iterator; |
| import java.util.Properties; |
| |
| import org.apache.hadoop.fs.FileUtil; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.io.LongWritable; |
| import org.apache.hadoop.io.Text; |
| import org.apache.hadoop.mapred.Counters.Counter; |
| import org.apache.hadoop.mapred.lib.IdentityMapper; |
| import org.apache.hadoop.mapred.lib.IdentityReducer; |
| import org.apache.hadoop.util.StringUtils; |
| import org.hsqldb.lib.StringUtil; |
| |
| public class TestUserDefinedCounters extends ClusterMapReduceTestCase { |
| protected void setUp() throws Exception { |
| super.setUp(); |
| Properties prop = new Properties(); |
| prop.put("mapred.job.tracker.persist.jobstatus.active", "true"); |
| prop.put("mapred.job.tracker.persist.jobstatus.hours", "1"); |
| startCluster(true, prop); |
| } |
| |
| enum EnumCounter { MAP_RECORDS } |
| |
| static class CountingMapper<K, V> extends IdentityMapper<K, V> { |
| private JobConf jconf; |
| boolean generateUniqueCounters = false; |
| |
| @Override |
| public void configure(JobConf jconf) { |
| this.jconf = jconf; |
| this.generateUniqueCounters = |
| jconf.getBoolean("task.generate.unique.counters", false); |
| } |
| |
| public void map(K key, V value, |
| OutputCollector<K, V> output, Reporter reporter) |
| throws IOException { |
| output.collect(key, value); |
| reporter.incrCounter(EnumCounter.MAP_RECORDS, 1); |
| reporter.incrCounter("StringCounter", "MapRecords", 1); |
| for (int i =0; i < 50; i++) { |
| if (generateUniqueCounters) { |
| reporter.incrCounter("StringCounter", "countername_" + |
| jconf.get("mapred.task.id") + "_"+ i, 1); |
| } else { |
| reporter.incrCounter("StringCounter", "countername_" + |
| i, 1); |
| } |
| } |
| } |
| } |
| |
| public void testMapReduceJob() throws Exception { |
| OutputStream os = getFileSystem().create(new Path(getInputDir(), "text.txt")); |
| Writer wr = new OutputStreamWriter(os); |
| wr.write("hello1\n"); |
| wr.write("hello2\n"); |
| wr.write("hello3\n"); |
| wr.write("hello4\n"); |
| wr.close(); |
| |
| JobConf conf = createJobConf(); |
| conf.setJobName("counters"); |
| |
| conf.setInputFormat(TextInputFormat.class); |
| |
| conf.setMapOutputKeyClass(LongWritable.class); |
| conf.setMapOutputValueClass(Text.class); |
| |
| conf.setOutputFormat(TextOutputFormat.class); |
| conf.setOutputKeyClass(LongWritable.class); |
| conf.setOutputValueClass(Text.class); |
| |
| conf.setMapperClass(CountingMapper.class); |
| conf.setReducerClass(IdentityReducer.class); |
| |
| FileInputFormat.setInputPaths(conf, getInputDir()); |
| |
| FileOutputFormat.setOutputPath(conf, getOutputDir()); |
| |
| RunningJob runningJob = JobClient.runJob(conf); |
| |
| Path[] outputFiles = FileUtil.stat2Paths( |
| getFileSystem().listStatus(getOutputDir(), |
| new Utils.OutputFileUtils.OutputFilesFilter())); |
| if (outputFiles.length > 0) { |
| InputStream is = getFileSystem().open(outputFiles[0]); |
| BufferedReader reader = new BufferedReader(new InputStreamReader(is)); |
| String line = reader.readLine(); |
| int counter = 0; |
| while (line != null) { |
| counter++; |
| assertTrue(line.contains("hello")); |
| line = reader.readLine(); |
| } |
| reader.close(); |
| assertEquals(4, counter); |
| } |
| |
| assertEquals(4, |
| runningJob.getCounters().getCounter(EnumCounter.MAP_RECORDS)); |
| Counters counters = runningJob.getCounters(); |
| assertEquals(4, |
| runningJob.getCounters().getGroup("StringCounter") |
| .getCounter("MapRecords")); |
| assertTrue(counters.getGroupNames().size() <= 51); |
| int i = 0; |
| while (counters.size() < Counters.MAX_COUNTER_LIMIT) { |
| counters.incrCounter("IncrCounter", "limit " + i, 2); |
| i++; |
| } |
| try { |
| counters.incrCounter("IncrCountertest", "test", 2); |
| assertTrue(false); |
| } catch(RuntimeException re) { |
| System.out.println("Exceeded counter " + |
| StringUtils.stringifyException(re)); |
| } |
| conf.setBoolean("task.generate.unique.counters", true); |
| FileOutputFormat.setOutputPath(conf, new Path("output-fail")); |
| try { |
| runningJob = JobClient.runJob(conf); |
| } catch(Exception ie) { |
| System.out.println(StringUtils.stringifyException(ie)); |
| } |
| } |
| } |