| /** |
| * 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.mapreduce.lib.output; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.net.URI; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.TimeUnit; |
| |
| import junit.framework.TestCase; |
| import org.apache.hadoop.util.concurrent.HadoopExecutors; |
| import 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.fs.FileStatus; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.FileUtil; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.fs.RawLocalFileSystem; |
| import org.apache.hadoop.io.IOUtils; |
| import org.apache.hadoop.io.LongWritable; |
| import org.apache.hadoop.io.MapFile; |
| import org.apache.hadoop.io.NullWritable; |
| import org.apache.hadoop.io.Text; |
| import org.apache.hadoop.mapreduce.Job; |
| import org.apache.hadoop.mapreduce.JobContext; |
| import org.apache.hadoop.mapreduce.JobStatus; |
| import org.apache.hadoop.mapreduce.MRJobConfig; |
| import org.apache.hadoop.mapreduce.OutputCommitter; |
| import org.apache.hadoop.mapreduce.RecordWriter; |
| import org.apache.hadoop.mapreduce.TaskAttemptContext; |
| import org.apache.hadoop.mapreduce.TaskAttemptID; |
| import org.apache.hadoop.mapreduce.task.JobContextImpl; |
| import org.apache.hadoop.mapreduce.task.TaskAttemptContextImpl; |
| |
| @SuppressWarnings("unchecked") |
| public class TestFileOutputCommitter extends TestCase { |
| private static final Path outDir = new Path( |
| System.getProperty("test.build.data", |
| System.getProperty("java.io.tmpdir")), |
| TestFileOutputCommitter.class.getName()); |
| |
| private final static String SUB_DIR = "SUB_DIR"; |
| private final static Path OUT_SUB_DIR = new Path(outDir, SUB_DIR); |
| |
| private static final Log LOG = |
| LogFactory.getLog(TestFileOutputCommitter.class); |
| |
| // A random task attempt id for testing. |
| private static final String attempt = "attempt_200707121733_0001_m_000000_0"; |
| private static final String partFile = "part-m-00000"; |
| private static final TaskAttemptID taskID = TaskAttemptID.forName(attempt); |
| |
| private static final String attempt1 = "attempt_200707121733_0001_m_000001_0"; |
| private static final TaskAttemptID taskID1 = TaskAttemptID.forName(attempt1); |
| |
| private Text key1 = new Text("key1"); |
| private Text key2 = new Text("key2"); |
| private Text val1 = new Text("val1"); |
| private Text val2 = new Text("val2"); |
| |
| |
| private static void cleanup() throws IOException { |
| Configuration conf = new Configuration(); |
| FileSystem fs = outDir.getFileSystem(conf); |
| fs.delete(outDir, true); |
| } |
| |
| @Override |
| public void setUp() throws IOException { |
| cleanup(); |
| } |
| |
| @Override |
| public void tearDown() throws IOException { |
| cleanup(); |
| } |
| |
| private void writeOutput(RecordWriter theRecordWriter, |
| TaskAttemptContext context) throws IOException, InterruptedException { |
| NullWritable nullWritable = NullWritable.get(); |
| |
| try { |
| theRecordWriter.write(key1, val1); |
| theRecordWriter.write(null, nullWritable); |
| theRecordWriter.write(null, val1); |
| theRecordWriter.write(nullWritable, val2); |
| theRecordWriter.write(key2, nullWritable); |
| theRecordWriter.write(key1, null); |
| theRecordWriter.write(null, null); |
| theRecordWriter.write(key2, val2); |
| } finally { |
| theRecordWriter.close(context); |
| } |
| } |
| |
| private void writeMapFileOutput(RecordWriter theRecordWriter, |
| TaskAttemptContext context) throws IOException, InterruptedException { |
| try { |
| int key = 0; |
| for (int i = 0 ; i < 10; ++i) { |
| key = i; |
| Text val = (i%2 == 1) ? val1 : val2; |
| theRecordWriter.write(new LongWritable(key), |
| val); |
| } |
| } finally { |
| theRecordWriter.close(context); |
| } |
| } |
| |
| private void testRecoveryInternal(int commitVersion, int recoveryVersion) |
| throws Exception { |
| Job job = Job.getInstance(); |
| FileOutputFormat.setOutputPath(job, outDir); |
| Configuration conf = job.getConfiguration(); |
| conf.set(MRJobConfig.TASK_ATTEMPT_ID, attempt); |
| conf.setInt(MRJobConfig.APPLICATION_ATTEMPT_ID, 1); |
| conf.setInt(FileOutputCommitter.FILEOUTPUTCOMMITTER_ALGORITHM_VERSION, |
| commitVersion); |
| JobContext jContext = new JobContextImpl(conf, taskID.getJobID()); |
| TaskAttemptContext tContext = new TaskAttemptContextImpl(conf, taskID); |
| FileOutputCommitter committer = new FileOutputCommitter(outDir, tContext); |
| |
| // setup |
| committer.setupJob(jContext); |
| committer.setupTask(tContext); |
| |
| // write output |
| TextOutputFormat theOutputFormat = new TextOutputFormat(); |
| RecordWriter theRecordWriter = theOutputFormat.getRecordWriter(tContext); |
| writeOutput(theRecordWriter, tContext); |
| |
| // do commit |
| committer.commitTask(tContext); |
| |
| Path jobTempDir1 = committer.getCommittedTaskPath(tContext); |
| File jtd = new File(jobTempDir1.toUri().getPath()); |
| if (commitVersion == 1) { |
| assertTrue("Version 1 commits to temporary dir " + jtd, jtd.exists()); |
| validateContent(jtd); |
| } else { |
| assertFalse("Version 2 commits to output dir " + jtd, jtd.exists()); |
| } |
| |
| //now while running the second app attempt, |
| //recover the task output from first attempt |
| Configuration conf2 = job.getConfiguration(); |
| conf2.set(MRJobConfig.TASK_ATTEMPT_ID, attempt); |
| conf2.setInt(MRJobConfig.APPLICATION_ATTEMPT_ID, 2); |
| conf2.setInt(FileOutputCommitter.FILEOUTPUTCOMMITTER_ALGORITHM_VERSION, |
| recoveryVersion); |
| JobContext jContext2 = new JobContextImpl(conf2, taskID.getJobID()); |
| TaskAttemptContext tContext2 = new TaskAttemptContextImpl(conf2, taskID); |
| FileOutputCommitter committer2 = new FileOutputCommitter(outDir, tContext2); |
| committer2.setupJob(tContext2); |
| Path jobTempDir2 = committer2.getCommittedTaskPath(tContext2); |
| File jtd2 = new File(jobTempDir2.toUri().getPath()); |
| |
| committer2.recoverTask(tContext2); |
| if (recoveryVersion == 1) { |
| assertTrue("Version 1 recovers to " + jtd2, jtd2.exists()); |
| validateContent(jtd2); |
| } else { |
| assertFalse("Version 2 commits to output dir " + jtd2, jtd2.exists()); |
| if (commitVersion == 1) { |
| assertTrue("Version 2 recovery moves to output dir from " |
| + jtd , jtd.list().length == 0); |
| } |
| } |
| |
| committer2.commitJob(jContext2); |
| validateContent(outDir); |
| FileUtil.fullyDelete(new File(outDir.toString())); |
| } |
| |
| public void testRecoveryV1() throws Exception { |
| testRecoveryInternal(1, 1); |
| } |
| |
| public void testRecoveryV2() throws Exception { |
| testRecoveryInternal(2, 2); |
| } |
| |
| public void testRecoveryUpgradeV1V2() throws Exception { |
| testRecoveryInternal(1, 2); |
| } |
| |
| private void validateContent(Path dir) throws IOException { |
| validateContent(new File(dir.toUri().getPath())); |
| } |
| |
| private void validateContent(File dir) throws IOException { |
| File expectedFile = new File(dir, partFile); |
| assertTrue("Could not find "+expectedFile, expectedFile.exists()); |
| StringBuffer expectedOutput = new StringBuffer(); |
| expectedOutput.append(key1).append('\t').append(val1).append("\n"); |
| expectedOutput.append(val1).append("\n"); |
| expectedOutput.append(val2).append("\n"); |
| expectedOutput.append(key2).append("\n"); |
| expectedOutput.append(key1).append("\n"); |
| expectedOutput.append(key2).append('\t').append(val2).append("\n"); |
| String output = slurp(expectedFile); |
| assertEquals(output, expectedOutput.toString()); |
| } |
| |
| private void validateMapFileOutputContent( |
| FileSystem fs, Path dir) throws IOException { |
| // map output is a directory with index and data files |
| Path expectedMapDir = new Path(dir, partFile); |
| assert(fs.getFileStatus(expectedMapDir).isDirectory()); |
| FileStatus[] files = fs.listStatus(expectedMapDir); |
| int fileCount = 0; |
| boolean dataFileFound = false; |
| boolean indexFileFound = false; |
| for (FileStatus f : files) { |
| if (f.isFile()) { |
| ++fileCount; |
| if (f.getPath().getName().equals(MapFile.INDEX_FILE_NAME)) { |
| indexFileFound = true; |
| } |
| else if (f.getPath().getName().equals(MapFile.DATA_FILE_NAME)) { |
| dataFileFound = true; |
| } |
| } |
| } |
| assert(fileCount > 0); |
| assert(dataFileFound && indexFileFound); |
| } |
| |
| private void testCommitterInternal(int version, boolean taskCleanup) |
| throws Exception { |
| Job job = Job.getInstance(); |
| FileOutputFormat.setOutputPath(job, outDir); |
| Configuration conf = job.getConfiguration(); |
| conf.set(MRJobConfig.TASK_ATTEMPT_ID, attempt); |
| conf.setInt( |
| FileOutputCommitter.FILEOUTPUTCOMMITTER_ALGORITHM_VERSION, |
| version); |
| conf.setBoolean( |
| FileOutputCommitter.FILEOUTPUTCOMMITTER_TASK_CLEANUP_ENABLED, |
| taskCleanup); |
| JobContext jContext = new JobContextImpl(conf, taskID.getJobID()); |
| TaskAttemptContext tContext = new TaskAttemptContextImpl(conf, taskID); |
| FileOutputCommitter committer = new FileOutputCommitter(outDir, tContext); |
| |
| // setup |
| committer.setupJob(jContext); |
| committer.setupTask(tContext); |
| |
| // write output |
| TextOutputFormat theOutputFormat = new TextOutputFormat(); |
| RecordWriter theRecordWriter = theOutputFormat.getRecordWriter(tContext); |
| writeOutput(theRecordWriter, tContext); |
| |
| // check task and job temp directories exist |
| File jobOutputDir = new File( |
| new Path(outDir, FileOutputCommitter.PENDING_DIR_NAME).toString()); |
| File taskOutputDir = new File(Path.getPathWithoutSchemeAndAuthority( |
| committer.getWorkPath()).toString()); |
| assertTrue("job temp dir does not exist", jobOutputDir.exists()); |
| assertTrue("task temp dir does not exist", taskOutputDir.exists()); |
| |
| // do commit |
| committer.commitTask(tContext); |
| assertTrue("job temp dir does not exist", jobOutputDir.exists()); |
| if (version == 1 || taskCleanup) { |
| // Task temp dir gets renamed in v1 and deleted if taskCleanup is |
| // enabled in v2 |
| assertFalse("task temp dir still exists", taskOutputDir.exists()); |
| } else { |
| // By default, in v2 the task temp dir is only deleted during commitJob |
| assertTrue("task temp dir does not exist", taskOutputDir.exists()); |
| } |
| |
| // Entire job temp directory gets deleted, including task temp dir |
| committer.commitJob(jContext); |
| assertFalse("job temp dir still exists", jobOutputDir.exists()); |
| assertFalse("task temp dir still exists", taskOutputDir.exists()); |
| |
| // validate output |
| validateContent(outDir); |
| FileUtil.fullyDelete(new File(outDir.toString())); |
| } |
| |
| public void testCommitterV1() throws Exception { |
| testCommitterInternal(1, false); |
| } |
| |
| public void testCommitterV2() throws Exception { |
| testCommitterInternal(2, false); |
| } |
| |
| public void testCommitterV2TaskCleanupEnabled() throws Exception { |
| testCommitterInternal(2, true); |
| } |
| |
| public void testCommitterWithDuplicatedCommitV1() throws Exception { |
| testCommitterWithDuplicatedCommitInternal(1); |
| } |
| |
| public void testCommitterWithDuplicatedCommitV2() throws Exception { |
| testCommitterWithDuplicatedCommitInternal(2); |
| } |
| |
| private void testCommitterWithDuplicatedCommitInternal(int version) throws |
| Exception { |
| Job job = Job.getInstance(); |
| FileOutputFormat.setOutputPath(job, outDir); |
| Configuration conf = job.getConfiguration(); |
| conf.set(MRJobConfig.TASK_ATTEMPT_ID, attempt); |
| conf.setInt(FileOutputCommitter.FILEOUTPUTCOMMITTER_ALGORITHM_VERSION, |
| version); |
| JobContext jContext = new JobContextImpl(conf, taskID.getJobID()); |
| TaskAttemptContext tContext = new TaskAttemptContextImpl(conf, taskID); |
| FileOutputCommitter committer = new FileOutputCommitter(outDir, tContext); |
| |
| // setup |
| committer.setupJob(jContext); |
| committer.setupTask(tContext); |
| |
| // write output |
| TextOutputFormat theOutputFormat = new TextOutputFormat(); |
| RecordWriter theRecordWriter = theOutputFormat.getRecordWriter(tContext); |
| writeOutput(theRecordWriter, tContext); |
| |
| // do commit |
| committer.commitTask(tContext); |
| committer.commitJob(jContext); |
| |
| // validate output |
| validateContent(outDir); |
| |
| // commit job again on a successful commit job. |
| try { |
| committer.commitJob(jContext); |
| if (version == 1) { |
| Assert.fail("Duplicate commit success: wrong behavior for version 1."); |
| } |
| } catch (IOException e) { |
| if (version == 2) { |
| Assert.fail("Duplicate commit failed: wrong behavior for version 2."); |
| } |
| } |
| FileUtil.fullyDelete(new File(outDir.toString())); |
| } |
| |
| public void testCommitterWithFailureV1() throws Exception { |
| testCommitterWithFailureInternal(1, 1); |
| testCommitterWithFailureInternal(1, 2); |
| } |
| |
| public void testCommitterWithFailureV2() throws Exception { |
| testCommitterWithFailureInternal(2, 1); |
| testCommitterWithFailureInternal(2, 2); |
| } |
| |
| private void testCommitterWithFailureInternal(int version, int maxAttempts) |
| throws Exception { |
| Job job = Job.getInstance(); |
| FileOutputFormat.setOutputPath(job, outDir); |
| Configuration conf = job.getConfiguration(); |
| conf.set(MRJobConfig.TASK_ATTEMPT_ID, attempt); |
| conf.setInt(FileOutputCommitter.FILEOUTPUTCOMMITTER_ALGORITHM_VERSION, |
| version); |
| conf.setInt(FileOutputCommitter.FILEOUTPUTCOMMITTER_FAILURE_ATTEMPTS, |
| maxAttempts); |
| |
| JobContext jContext = new JobContextImpl(conf, taskID.getJobID()); |
| TaskAttemptContext tContext = new TaskAttemptContextImpl(conf, taskID); |
| FileOutputCommitter committer = new CommitterWithFailedThenSucceed(outDir, |
| tContext); |
| |
| // setup |
| committer.setupJob(jContext); |
| committer.setupTask(tContext); |
| |
| // write output |
| TextOutputFormat theOutputFormat = new TextOutputFormat(); |
| RecordWriter theRecordWriter = theOutputFormat.getRecordWriter(tContext); |
| writeOutput(theRecordWriter, tContext); |
| |
| // do commit |
| committer.commitTask(tContext); |
| |
| try { |
| committer.commitJob(jContext); |
| // (1,1), (1,2), (2,1) shouldn't reach to here. |
| if (version == 1 || maxAttempts <= 1) { |
| Assert.fail("Commit successful: wrong behavior for version 1."); |
| } |
| } catch (IOException e) { |
| // (2,2) shouldn't reach to here. |
| if (version == 2 && maxAttempts > 2) { |
| Assert.fail("Commit failed: wrong behavior for version 2."); |
| } |
| } |
| |
| FileUtil.fullyDelete(new File(outDir.toString())); |
| } |
| |
| public void testCommitterRepeatableV1() throws Exception { |
| testCommitterRetryInternal(1); |
| } |
| |
| public void testCommitterRepeatableV2() throws Exception { |
| testCommitterRetryInternal(2); |
| } |
| |
| // retry committer for 2 times. |
| private void testCommitterRetryInternal(int version) |
| throws Exception { |
| Job job = Job.getInstance(); |
| FileOutputFormat.setOutputPath(job, outDir); |
| Configuration conf = job.getConfiguration(); |
| conf.set(MRJobConfig.TASK_ATTEMPT_ID, attempt); |
| conf.setInt(FileOutputCommitter.FILEOUTPUTCOMMITTER_ALGORITHM_VERSION, |
| version); |
| // only attempt for 1 time. |
| conf.setInt(FileOutputCommitter.FILEOUTPUTCOMMITTER_FAILURE_ATTEMPTS, |
| 1); |
| |
| JobContext jContext = new JobContextImpl(conf, taskID.getJobID()); |
| TaskAttemptContext tContext = new TaskAttemptContextImpl(conf, taskID); |
| FileOutputCommitter committer = new CommitterWithFailedThenSucceed(outDir, |
| tContext); |
| |
| // setup |
| committer.setupJob(jContext); |
| committer.setupTask(tContext); |
| |
| // write output |
| TextOutputFormat theOutputFormat = new TextOutputFormat(); |
| RecordWriter theRecordWriter = theOutputFormat.getRecordWriter(tContext); |
| writeOutput(theRecordWriter, tContext); |
| |
| // do commit |
| committer.commitTask(tContext); |
| |
| try { |
| committer.commitJob(jContext); |
| Assert.fail("Commit successful: wrong behavior for the first time " + |
| "commit."); |
| } catch (IOException e) { |
| // commit again. |
| try { |
| committer.commitJob(jContext); |
| // version 1 shouldn't reach to here. |
| if (version == 1) { |
| Assert.fail("Commit successful after retry: wrong behavior for " + |
| "version 1."); |
| } |
| } catch (FileNotFoundException ex) { |
| if (version == 2) { |
| Assert.fail("Commit failed after retry: wrong behavior for" + |
| " version 2."); |
| } |
| assertTrue(ex.getMessage().contains(committer.getJobAttemptPath( |
| jContext).toString() + " does not exist")); |
| } |
| } |
| |
| FileUtil.fullyDelete(new File(outDir.toString())); |
| } |
| |
| private void testMapFileOutputCommitterInternal(int version) |
| throws Exception { |
| Job job = Job.getInstance(); |
| FileOutputFormat.setOutputPath(job, outDir); |
| Configuration conf = job.getConfiguration(); |
| conf.set(MRJobConfig.TASK_ATTEMPT_ID, attempt); |
| conf.setInt(FileOutputCommitter.FILEOUTPUTCOMMITTER_ALGORITHM_VERSION, |
| version); |
| JobContext jContext = new JobContextImpl(conf, taskID.getJobID()); |
| TaskAttemptContext tContext = new TaskAttemptContextImpl(conf, taskID); |
| FileOutputCommitter committer = new FileOutputCommitter(outDir, tContext); |
| |
| // setup |
| committer.setupJob(jContext); |
| committer.setupTask(tContext); |
| |
| // write output |
| MapFileOutputFormat theOutputFormat = new MapFileOutputFormat(); |
| RecordWriter theRecordWriter = theOutputFormat.getRecordWriter(tContext); |
| writeMapFileOutput(theRecordWriter, tContext); |
| |
| // do commit |
| committer.commitTask(tContext); |
| committer.commitJob(jContext); |
| |
| // Ensure getReaders call works and also ignores |
| // hidden filenames (_ or . prefixes) |
| MapFile.Reader[] readers = {}; |
| try { |
| readers = MapFileOutputFormat.getReaders(outDir, conf); |
| // validate output |
| validateMapFileOutputContent(FileSystem.get(job.getConfiguration()), outDir); |
| } finally { |
| IOUtils.cleanupWithLogger(null, readers); |
| FileUtil.fullyDelete(new File(outDir.toString())); |
| } |
| } |
| |
| public void testMapFileOutputCommitterV1() throws Exception { |
| testMapFileOutputCommitterInternal(1); |
| } |
| |
| public void testMapFileOutputCommitterV2() throws Exception { |
| testMapFileOutputCommitterInternal(2); |
| } |
| |
| public void testInvalidVersionNumber() throws IOException { |
| Job job = Job.getInstance(); |
| FileOutputFormat.setOutputPath(job, outDir); |
| Configuration conf = job.getConfiguration(); |
| conf.set(MRJobConfig.TASK_ATTEMPT_ID, attempt); |
| conf.setInt(FileOutputCommitter.FILEOUTPUTCOMMITTER_ALGORITHM_VERSION, 3); |
| TaskAttemptContext tContext = new TaskAttemptContextImpl(conf, taskID); |
| try { |
| new FileOutputCommitter(outDir, tContext); |
| fail("should've thrown an exception!"); |
| } catch (IOException e) { |
| //test passed |
| } |
| } |
| |
| private void testAbortInternal(int version) |
| throws IOException, InterruptedException { |
| Job job = Job.getInstance(); |
| FileOutputFormat.setOutputPath(job, outDir); |
| Configuration conf = job.getConfiguration(); |
| conf.set(MRJobConfig.TASK_ATTEMPT_ID, attempt); |
| conf.setInt(FileOutputCommitter.FILEOUTPUTCOMMITTER_ALGORITHM_VERSION, |
| version); |
| JobContext jContext = new JobContextImpl(conf, taskID.getJobID()); |
| TaskAttemptContext tContext = new TaskAttemptContextImpl(conf, taskID); |
| FileOutputCommitter committer = new FileOutputCommitter(outDir, tContext); |
| |
| // do setup |
| committer.setupJob(jContext); |
| committer.setupTask(tContext); |
| |
| // write output |
| TextOutputFormat theOutputFormat = new TextOutputFormat(); |
| RecordWriter theRecordWriter = theOutputFormat.getRecordWriter(tContext); |
| writeOutput(theRecordWriter, tContext); |
| |
| // do abort |
| committer.abortTask(tContext); |
| File expectedFile = new File(new Path(committer.getWorkPath(), partFile) |
| .toString()); |
| assertFalse("task temp dir still exists", expectedFile.exists()); |
| |
| committer.abortJob(jContext, JobStatus.State.FAILED); |
| expectedFile = new File(new Path(outDir, FileOutputCommitter.PENDING_DIR_NAME) |
| .toString()); |
| assertFalse("job temp dir still exists", expectedFile.exists()); |
| assertEquals("Output directory not empty", 0, new File(outDir.toString()) |
| .listFiles().length); |
| FileUtil.fullyDelete(new File(outDir.toString())); |
| } |
| |
| public void testAbortV1() throws IOException, InterruptedException { |
| testAbortInternal(1); |
| } |
| |
| public void testAbortV2() throws IOException, InterruptedException { |
| testAbortInternal(2); |
| } |
| |
| public static class FakeFileSystem extends RawLocalFileSystem { |
| public FakeFileSystem() { |
| super(); |
| } |
| |
| public URI getUri() { |
| return URI.create("faildel:///"); |
| } |
| |
| @Override |
| public boolean delete(Path p, boolean recursive) throws IOException { |
| throw new IOException("fake delete failed"); |
| } |
| } |
| |
| |
| private void testFailAbortInternal(int version) |
| throws IOException, InterruptedException { |
| Job job = Job.getInstance(); |
| Configuration conf = job.getConfiguration(); |
| conf.set(FileSystem.FS_DEFAULT_NAME_KEY, "faildel:///"); |
| conf.setClass("fs.faildel.impl", FakeFileSystem.class, FileSystem.class); |
| conf.set(MRJobConfig.TASK_ATTEMPT_ID, attempt); |
| conf.setInt(MRJobConfig.APPLICATION_ATTEMPT_ID, 1); |
| conf.setInt(FileOutputCommitter.FILEOUTPUTCOMMITTER_ALGORITHM_VERSION, |
| version); |
| FileOutputFormat.setOutputPath(job, outDir); |
| JobContext jContext = new JobContextImpl(conf, taskID.getJobID()); |
| TaskAttemptContext tContext = new TaskAttemptContextImpl(conf, taskID); |
| FileOutputCommitter committer = new FileOutputCommitter(outDir, tContext); |
| |
| // do setup |
| committer.setupJob(jContext); |
| committer.setupTask(tContext); |
| |
| // write output |
| TextOutputFormat<?, ?> theOutputFormat = new TextOutputFormat(); |
| RecordWriter<?, ?> theRecordWriter = theOutputFormat |
| .getRecordWriter(tContext); |
| writeOutput(theRecordWriter, tContext); |
| |
| // do abort |
| Throwable th = null; |
| try { |
| committer.abortTask(tContext); |
| } catch (IOException ie) { |
| th = ie; |
| } |
| assertNotNull(th); |
| assertTrue(th instanceof IOException); |
| assertTrue(th.getMessage().contains("fake delete failed")); |
| Path jtd = committer.getJobAttemptPath(jContext); |
| File jobTmpDir = new File(jtd.toUri().getPath()); |
| Path ttd = committer.getTaskAttemptPath(tContext); |
| File taskTmpDir = new File(ttd.toUri().getPath()); |
| File expectedFile = new File(taskTmpDir, partFile); |
| assertTrue(expectedFile + " does not exists", expectedFile.exists()); |
| |
| th = null; |
| try { |
| committer.abortJob(jContext, JobStatus.State.FAILED); |
| } catch (IOException ie) { |
| th = ie; |
| } |
| assertNotNull(th); |
| assertTrue(th instanceof IOException); |
| assertTrue(th.getMessage().contains("fake delete failed")); |
| assertTrue("job temp dir does not exists", jobTmpDir.exists()); |
| FileUtil.fullyDelete(new File(outDir.toString())); |
| } |
| |
| public void testFailAbortV1() throws Exception { |
| testFailAbortInternal(1); |
| } |
| |
| public void testFailAbortV2() throws Exception { |
| testFailAbortInternal(2); |
| } |
| |
| static class RLFS extends RawLocalFileSystem { |
| private final ThreadLocal<Boolean> needNull = new ThreadLocal<Boolean>() { |
| @Override |
| protected Boolean initialValue() { |
| return true; |
| } |
| }; |
| |
| public RLFS() { |
| } |
| |
| @Override |
| public FileStatus getFileStatus(Path f) throws IOException { |
| if (needNull.get() && |
| OUT_SUB_DIR.toUri().getPath().equals(f.toUri().getPath())) { |
| needNull.set(false); // lie once per thread |
| return null; |
| } |
| return super.getFileStatus(f); |
| } |
| } |
| |
| private void testConcurrentCommitTaskWithSubDir(int version) |
| throws Exception { |
| final Job job = Job.getInstance(); |
| FileOutputFormat.setOutputPath(job, outDir); |
| final Configuration conf = job.getConfiguration(); |
| conf.set(MRJobConfig.TASK_ATTEMPT_ID, attempt); |
| conf.setInt(FileOutputCommitter.FILEOUTPUTCOMMITTER_ALGORITHM_VERSION, |
| version); |
| |
| conf.setClass("fs.file.impl", RLFS.class, FileSystem.class); |
| FileSystem.closeAll(); |
| |
| final JobContext jContext = new JobContextImpl(conf, taskID.getJobID()); |
| final FileOutputCommitter amCommitter = |
| new FileOutputCommitter(outDir, jContext); |
| amCommitter.setupJob(jContext); |
| |
| final TaskAttemptContext[] taCtx = new TaskAttemptContextImpl[2]; |
| taCtx[0] = new TaskAttemptContextImpl(conf, taskID); |
| taCtx[1] = new TaskAttemptContextImpl(conf, taskID1); |
| |
| final TextOutputFormat[] tof = new TextOutputFormat[2]; |
| for (int i = 0; i < tof.length; i++) { |
| tof[i] = new TextOutputFormat() { |
| @Override |
| public Path getDefaultWorkFile(TaskAttemptContext context, |
| String extension) throws IOException { |
| final FileOutputCommitter foc = (FileOutputCommitter) |
| getOutputCommitter(context); |
| return new Path(new Path(foc.getWorkPath(), SUB_DIR), |
| getUniqueFile(context, getOutputName(context), extension)); |
| } |
| }; |
| } |
| |
| final ExecutorService executor = HadoopExecutors.newFixedThreadPool(2); |
| try { |
| for (int i = 0; i < taCtx.length; i++) { |
| final int taskIdx = i; |
| executor.submit(new Callable<Void>() { |
| @Override |
| public Void call() throws IOException, InterruptedException { |
| final OutputCommitter outputCommitter = |
| tof[taskIdx].getOutputCommitter(taCtx[taskIdx]); |
| outputCommitter.setupTask(taCtx[taskIdx]); |
| final RecordWriter rw = |
| tof[taskIdx].getRecordWriter(taCtx[taskIdx]); |
| writeOutput(rw, taCtx[taskIdx]); |
| outputCommitter.commitTask(taCtx[taskIdx]); |
| return null; |
| } |
| }); |
| } |
| } finally { |
| executor.shutdown(); |
| while (!executor.awaitTermination(1, TimeUnit.SECONDS)) { |
| LOG.info("Awaiting thread termination!"); |
| } |
| } |
| |
| amCommitter.commitJob(jContext); |
| final RawLocalFileSystem lfs = new RawLocalFileSystem(); |
| lfs.setConf(conf); |
| assertFalse("Must not end up with sub_dir/sub_dir", |
| lfs.exists(new Path(OUT_SUB_DIR, SUB_DIR))); |
| |
| // validate output |
| validateContent(OUT_SUB_DIR); |
| FileUtil.fullyDelete(new File(outDir.toString())); |
| } |
| |
| public void testConcurrentCommitTaskWithSubDirV1() throws Exception { |
| testConcurrentCommitTaskWithSubDir(1); |
| } |
| |
| public void testConcurrentCommitTaskWithSubDirV2() throws Exception { |
| testConcurrentCommitTaskWithSubDir(2); |
| } |
| |
| public static String slurp(File f) throws IOException { |
| int len = (int) f.length(); |
| byte[] buf = new byte[len]; |
| FileInputStream in = new FileInputStream(f); |
| String contents = null; |
| try { |
| in.read(buf, 0, len); |
| contents = new String(buf, "UTF-8"); |
| } finally { |
| in.close(); |
| } |
| return contents; |
| } |
| |
| /** |
| * The class provides a overrided implementation of commitJobInternal which |
| * causes the commit failed for the first time then succeed. |
| */ |
| public static class CommitterWithFailedThenSucceed extends |
| FileOutputCommitter { |
| boolean firstTimeFail = true; |
| |
| public CommitterWithFailedThenSucceed(Path outputPath, |
| JobContext context) throws IOException { |
| super(outputPath, context); |
| } |
| |
| @Override |
| protected void commitJobInternal(JobContext context) throws IOException { |
| super.commitJobInternal(context); |
| if (firstTimeFail) { |
| firstTimeFail = false; |
| throw new IOException(); |
| } else { |
| // succeed then, nothing to do |
| } |
| } |
| } |
| |
| } |
