| /** |
| * 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.IOException; |
| import junit.framework.TestCase; |
| |
| import org.apache.hadoop.fs.FSDataOutputStream; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.mapred.JobHistory.JobInfo; |
| import org.apache.hadoop.mapred.JobHistory.RecordTypes; |
| |
| /** |
| * Tests the JobHistory parser with different versions of job history files. |
| * This may have to change when new versions of job history files come up. |
| */ |
| public class TestJobHistoryVersion extends TestCase { |
| private static final String HOSTNAME = "localhost"; |
| private static final String TIME= "1234567890123"; |
| private static final String USER = "user"; |
| private static final String JOBNAME = "job"; |
| private static final String JOB = "job_200809180000_0001"; |
| private static final String FILENAME = |
| HOSTNAME + "_" + TIME + "_" + JOB + "_" + USER + "_" + JOBNAME; |
| private static final String TASK_ID = "tip_200809180000_0001_0"; |
| private static final String TASK_ATTEMPT_ID = |
| "attempt_200809180000_0001_0_1234567890123"; |
| private static final String COUNTERS = |
| "Job Counters.Launched map tasks:1," |
| + "Map-Reduce Framework.Map input records:0," |
| + "Map-Reduce Framework.Map input bytes:0," |
| + "File Systems.HDFS bytes written:0,"; |
| private static final Path TEST_DIR = |
| new Path(System.getProperty("test.build.data", "/tmp"), |
| "test-history-version"); |
| private static final String DELIM = "."; |
| |
| /** |
| * Creates a job history file of a given specific version. This method should |
| * change if format/content of future versions of job history file changes. |
| */ |
| private void writeHistoryFile(FSDataOutputStream out, long version) |
| throws IOException { |
| String delim = "\n"; // '\n' for version 0 |
| String counters = COUNTERS; |
| String jobConf = "job.xml"; |
| if (version > 0) { // line delimeter should be '.' for later versions |
| // Change the delimiter |
| delim = DELIM + delim; |
| |
| // Write the version line |
| out.writeBytes(RecordTypes.Meta.name() + " VERSION=\"" |
| + JobHistory.VERSION + "\" " + delim); |
| jobConf = JobHistory.escapeString(jobConf); |
| counters = JobHistory.escapeString(counters); |
| } |
| |
| // Write the job-start line |
| |
| |
| out.writeBytes("Job JOBID=\"" + JOB + "\" JOBNAME=\"" + JOBNAME + "\"" |
| + " USER=\"" + USER + "\" SUBMIT_TIME=\"" + TIME + "\"" |
| + " JOBCONF=\"" + jobConf + "\" " + delim); |
| |
| // Write the job-launch line |
| out.writeBytes("Job JOBID=\"" + JOB + "\" LAUNCH_TIME=\"" + TIME + "\"" |
| + " TOTAL_MAPS=\"1\" TOTAL_REDUCES=\"0\" " + delim); |
| |
| // Write the task start line |
| out.writeBytes("Task TASKID=\"" + TASK_ID + "\" TASK_TYPE=\"MAP\"" |
| + " START_TIME=\"" + TIME + "\" SPLITS=\"\"" |
| + " TOTAL_MAPS=\"1\" TOTAL_REDUCES=\"0\" " + delim); |
| |
| // Write the attempt start line |
| out.writeBytes("MapAttempt TASK_TYPE=\"MAP\" TASKID=\"" + TASK_ID + "\"" |
| + " TASK_ATTEMPT_ID=\"" + TASK_ATTEMPT_ID + "\"" |
| + " START_TIME=\"" + TIME + "\"" |
| + " HOSTNAME=\"" + HOSTNAME + "\" " + delim); |
| |
| // Write the attempt finish line |
| out.writeBytes("MapAttempt TASK_TYPE=\"MAP\" TASKID=\"" + TASK_ID + "\"" |
| + " TASK_ATTEMPT_ID=\"" + TASK_ATTEMPT_ID + "\"" |
| + " FINISH_TIME=\"" + TIME + "\"" |
| + " TASK_STATUS=\"SUCCESS\"" |
| + " HOSTNAME=\"" + HOSTNAME + "\" " + delim); |
| |
| // Write the task finish line |
| out.writeBytes("Task TASKID=\"" + TASK_ID + "\" TASK_TYPE=\"MAP\"" |
| + " TASK_STATUS=\"SUCCESS\"" |
| + " FINISH_TIME=\"" + TIME + "\"" |
| + " COUNTERS=\"" + counters + "\" " + delim); |
| |
| // Write the job-finish line |
| out.writeBytes("Job JOBID=\"" + JOB + "\" FINISH_TIME=\"" + TIME + "\"" |
| + " TOTAL_MAPS=\"1\" TOTAL_REDUCES=\"0\"" |
| + " JOB_STATUS=\"SUCCESS\" FINISHED_MAPS=\"1\"" |
| + " FINISHED_REDUCES=\"0\" FAILED_MAPS=\"0\"" |
| + " FAILED_REDUCES=\"0\"" |
| + " COUNTERS=\"" + counters + "\" " + delim); |
| |
| } |
| |
| /** |
| * Tests the JobHistory parser with different versions of job history files |
| */ |
| public void testJobHistoryVersion() throws IOException { |
| // If new job history version comes up, the modified parser may fail for |
| // the history file created by writeHistoryFile(). |
| for (long version = 0; version <= JobHistory.VERSION; version++) { |
| JobConf conf = new JobConf(); |
| FileSystem fs = FileSystem.getLocal(conf); |
| |
| // cleanup |
| fs.delete(TEST_DIR, true); |
| |
| Path historyPath = new Path(TEST_DIR + "/_logs/history/" + |
| FILENAME + version); |
| |
| fs.delete(historyPath, false); |
| |
| FSDataOutputStream out = fs.create(historyPath); |
| writeHistoryFile(out, version); |
| out.close(); |
| |
| JobInfo job = new JobHistory.JobInfo(JOB); |
| DefaultJobHistoryParser.parseJobTasks(historyPath.toString(), job, fs); |
| |
| assertTrue("Failed to parse jobhistory files of version " + version, |
| job.getAllTasks().size() > 0); |
| |
| // cleanup |
| fs.delete(TEST_DIR, true); |
| } |
| } |
| } |