List of usage examples for org.apache.hadoop.mapreduce.task MapContextImpl MapContextImpl
public MapContextImpl(Configuration conf, TaskAttemptID taskid, RecordReader<KEYIN, VALUEIN> reader,
RecordWriter<KEYOUT, VALUEOUT> writer, OutputCommitter committer, StatusReporter reporter,
InputSplit split)
From source file:com.asakusafw.runtime.compatibility.hadoop2.JobCompatibilityHadoop2.java
License:Apache License
@Override public <KEYIN, VALUEIN, KEYOUT, VALUEOUT> Mapper<KEYIN, VALUEIN, KEYOUT, VALUEOUT>.Context newMapperContext( Configuration configuration, TaskAttemptID id, RecordReader<KEYIN, VALUEIN> reader, RecordWriter<KEYOUT, VALUEOUT> writer, OutputCommitter committer, InputSplit split) throws IOException, InterruptedException { MapContext<KEYIN, VALUEIN, KEYOUT, VALUEOUT> context = new MapContextImpl<>(configuration, id, reader, writer, committer, new MockStatusReporter(), split); return new WrappedMapper<KEYIN, VALUEIN, KEYOUT, VALUEOUT>().getMapContext(context); }
From source file:com.moz.fiji.mapreduce.platform.CDH5FijiMRBridge.java
License:Apache License
/** {@inheritDoc} */ @Override/*from www.j ava 2s . c o m*/ public <KEYIN, VALUEIN, KEYOUT, VALUEOUT> Context getMapperContext(final Configuration conf, final TaskAttemptID taskId, final RecordReader<KEYIN, VALUEIN> reader, final RecordWriter<KEYOUT, VALUEOUT> writer, final OutputCommitter committer, final StatusReporter reporter, final InputSplit split) throws IOException, InterruptedException { MapContext<KEYIN, VALUEIN, KEYOUT, VALUEOUT> mapContext = new MapContextImpl<KEYIN, VALUEIN, KEYOUT, VALUEOUT>( conf, taskId, reader, writer, committer, reporter, split); return new WrappedMapper<KEYIN, VALUEIN, KEYOUT, VALUEOUT>().getMapContext(mapContext); }
From source file:edu.uci.ics.hyracks.dataflow.hadoop.util.MRContextUtil.java
License:Apache License
@SuppressWarnings({ "rawtypes", "unchecked" })
public Mapper.Context createMapContext(Configuration conf, TaskAttemptID taskid, RecordReader reader,
RecordWriter writer, OutputCommitter committer, StatusReporter reporter, InputSplit split) {
return new WrappedMapper()
.getMapContext(new MapContextImpl(conf, taskid, reader, writer, committer, reporter, split));
}
From source file:it.crs4.pydoop.mapreduce.pipes.TestPipeApplication.java
License:Apache License
/** * test org.apache.hadoop.mapreduce.pipes.Application * test a internal functions: //from w w w . ja va2 s .c o m * MessageType.REGISTER_COUNTER, INCREMENT_COUNTER, STATUS, PROGRESS... * * @throws Throwable */ @Test public void testApplication() throws Throwable { System.err.println("testApplication"); File[] psw = cleanTokenPasswordFile(); try { JobID jobId = new JobID("201408272347", 0); TaskID taskId = new TaskID(jobId, TaskType.MAP, 0); TaskAttemptID taskAttemptid = new TaskAttemptID(taskId, 0); Job job = new Job(new Configuration()); job.setJobID(jobId); Configuration conf = job.getConfiguration(); conf.set(MRJobConfig.TASK_ATTEMPT_ID, taskAttemptid.toString()); FileSystem fs = new RawLocalFileSystem(); fs.setConf(conf); File fCommand = getFileCommand("it.crs4.pydoop.mapreduce.pipes.PipeApplicationStub"); //getFileCommand("it.crs4.pydoop.mapreduce.pipes.PipeApplicationRunnableStub"); conf.set(MRJobConfig.CACHE_LOCALFILES, fCommand.getAbsolutePath()); System.err.println("fCommand" + fCommand.getAbsolutePath()); Token<AMRMTokenIdentifier> token = new Token<AMRMTokenIdentifier>("user".getBytes(), "password".getBytes(), new Text("kind"), new Text("service")); TokenCache.setJobToken(token, job.getCredentials()); conf.setBoolean(MRJobConfig.SKIP_RECORDS, true); TestReporter reporter = new TestReporter(); DummyInputFormat input_format = new DummyInputFormat(); List<InputSplit> isplits = input_format.getSplits(job); InputSplit isplit = isplits.get(0); TaskAttemptContextImpl tcontext = new TaskAttemptContextImpl(conf, taskAttemptid); DummyRecordReader reader = (DummyRecordReader) input_format.createRecordReader(isplit, tcontext); job.setOutputKeyClass(IntWritable.class); job.setOutputValueClass(Text.class); RecordWriter<IntWritable, Text> writer = new TestRecordWriter( new FileOutputStream(workSpace.getAbsolutePath() + File.separator + "outfile")); MapContextImpl<IntWritable, Text, IntWritable, Text> context = new MapContextImpl<IntWritable, Text, IntWritable, Text>( conf, taskAttemptid, null, writer, null, reporter, null); System.err.println("ready to launch application"); Application<IntWritable, Text, IntWritable, Text> application = new Application<IntWritable, Text, IntWritable, Text>( context, reader); System.err.println("done"); application.getDownlink().flush(); application.getDownlink().mapItem(new IntWritable(3), new Text("txt")); application.getDownlink().flush(); application.waitForFinish(); // test getDownlink().mapItem(); String stdOut = readStdOut(conf); assertTrue(stdOut.contains("key:3")); assertTrue(stdOut.contains("value:txt")); assertEquals(0.0, context.getProgress(), 0.01); assertNotNull(context.getCounter("group", "name")); // test status MessageType.STATUS assertEquals(context.getStatus(), "PROGRESS"); // check MessageType.PROGRESS assertEquals(0.55f, reader.getProgress(), 0.001); application.getDownlink().close(); // test MessageType.OUTPUT stdOut = readFile(new File(workSpace.getAbsolutePath() + File.separator + "outfile")); assertTrue(stdOut.contains("key:123")); assertTrue(stdOut.contains("value:value")); try { // try to abort application.abort(new Throwable()); fail(); } catch (IOException e) { // abort works ? assertEquals("pipe child exception", e.getMessage()); } } finally { if (psw != null) { // remove password files for (File file : psw) { file.deleteOnExit(); } } } }
From source file:org.apache.accumulo.examples.wikisearch.logic.TestQueryLogic.java
License:Apache License
@Before public void setup() throws Exception { Logger.getLogger(AbstractQueryLogic.class).setLevel(Level.DEBUG); Logger.getLogger(QueryLogic.class).setLevel(Level.DEBUG); Logger.getLogger(RangeCalculator.class).setLevel(Level.DEBUG); conf.set(AggregatingRecordReader.START_TOKEN, "<page>"); conf.set(AggregatingRecordReader.END_TOKEN, "</page>"); conf.set(WikipediaConfiguration.TABLE_NAME, TABLE_NAME); conf.set(WikipediaConfiguration.NUM_PARTITIONS, "1"); conf.set(WikipediaConfiguration.NUM_GROUPS, "1"); MockInstance i = new MockInstance(); c = i.getConnector("root", new PasswordToken("")); WikipediaIngester.createTables(c.tableOperations(), TABLE_NAME, false); for (String table : TABLE_NAMES) { writerMap.put(new Text(table), c.createBatchWriter(table, 1000L, 1000L, 1)); }/*from w w w.j a v a 2 s . c o m*/ TaskAttemptID id = new TaskAttemptID("fake", 1, TaskType.MAP, 1, 1); TaskAttemptContext context = new TaskAttemptContextImpl(conf, id); RawLocalFileSystem fs = new RawLocalFileSystem(); fs.setConf(conf); URL url = ClassLoader.getSystemResource("enwiki-20110901-001.xml"); Assert.assertNotNull(url); File data = new File(url.toURI()); Path tmpFile = new Path(data.getAbsolutePath()); // Setup the Mapper WikipediaInputSplit split = new WikipediaInputSplit( new FileSplit(tmpFile, 0, fs.pathToFile(tmpFile).length(), null), 0); AggregatingRecordReader rr = new AggregatingRecordReader(); Path ocPath = new Path(tmpFile, "oc"); OutputCommitter oc = new FileOutputCommitter(ocPath, context); fs.deleteOnExit(ocPath); StandaloneStatusReporter sr = new StandaloneStatusReporter(); rr.initialize(split, context); MockAccumuloRecordWriter rw = new MockAccumuloRecordWriter(); WikipediaMapper mapper = new WikipediaMapper(); // there are times I wonder, "Why do Java people think this is good?" then I drink more whiskey final MapContextImpl<LongWritable, Text, Text, Mutation> mapContext = new MapContextImpl<LongWritable, Text, Text, Mutation>( conf, id, rr, rw, oc, sr, split); // Load data into Mock Accumulo Mapper<LongWritable, Text, Text, Mutation>.Context con = mapper.new Context() { /** * Get the input split for this map. */ public InputSplit getInputSplit() { return mapContext.getInputSplit(); } @Override public LongWritable getCurrentKey() throws IOException, InterruptedException { return mapContext.getCurrentKey(); } @Override public Text getCurrentValue() throws IOException, InterruptedException { return mapContext.getCurrentValue(); } @Override public boolean nextKeyValue() throws IOException, InterruptedException { return mapContext.nextKeyValue(); } @Override public Counter getCounter(Enum<?> counterName) { return mapContext.getCounter(counterName); } @Override public Counter getCounter(String groupName, String counterName) { return mapContext.getCounter(groupName, counterName); } @Override public OutputCommitter getOutputCommitter() { return mapContext.getOutputCommitter(); } @Override public void write(Text key, Mutation value) throws IOException, InterruptedException { mapContext.write(key, value); } @Override public String getStatus() { return mapContext.getStatus(); } @Override public TaskAttemptID getTaskAttemptID() { return mapContext.getTaskAttemptID(); } @Override public void setStatus(String msg) { mapContext.setStatus(msg); } @Override public Path[] getArchiveClassPaths() { return mapContext.getArchiveClassPaths(); } @Override public String[] getArchiveTimestamps() { return mapContext.getArchiveTimestamps(); } @Override public URI[] getCacheArchives() throws IOException { return mapContext.getCacheArchives(); } @Override public URI[] getCacheFiles() throws IOException { return mapContext.getCacheArchives(); } @Override public Class<? extends Reducer<?, ?, ?, ?>> getCombinerClass() throws ClassNotFoundException { return mapContext.getCombinerClass(); } @Override public Configuration getConfiguration() { return mapContext.getConfiguration(); } @Override public Path[] getFileClassPaths() { return mapContext.getFileClassPaths(); } @Override public String[] getFileTimestamps() { return mapContext.getFileTimestamps(); } @Override public RawComparator<?> getGroupingComparator() { return mapContext.getGroupingComparator(); } @Override public Class<? extends InputFormat<?, ?>> getInputFormatClass() throws ClassNotFoundException { return mapContext.getInputFormatClass(); } @Override public String getJar() { return mapContext.getJar(); } @Override public JobID getJobID() { return mapContext.getJobID(); } @Override public String getJobName() { return mapContext.getJobName(); } /*@Override public boolean userClassesTakesPrecedence() { return mapContext.userClassesTakesPrecedence(); }*/ @Override public boolean getJobSetupCleanupNeeded() { return mapContext.getJobSetupCleanupNeeded(); } @Override public boolean getTaskCleanupNeeded() { return mapContext.getTaskCleanupNeeded(); } @Override public Path[] getLocalCacheArchives() throws IOException { return mapContext.getLocalCacheArchives(); } @Override public Path[] getLocalCacheFiles() throws IOException { return mapContext.getLocalCacheFiles(); } @Override public Class<?> getMapOutputKeyClass() { return mapContext.getMapOutputKeyClass(); } @Override public Class<?> getMapOutputValueClass() { return mapContext.getMapOutputValueClass(); } @Override public Class<? extends Mapper<?, ?, ?, ?>> getMapperClass() throws ClassNotFoundException { return mapContext.getMapperClass(); } @Override public int getMaxMapAttempts() { return mapContext.getMaxMapAttempts(); } @Override public int getMaxReduceAttempts() { return mapContext.getMaxReduceAttempts(); } @Override public int getNumReduceTasks() { return mapContext.getNumReduceTasks(); } @Override public Class<? extends OutputFormat<?, ?>> getOutputFormatClass() throws ClassNotFoundException { return mapContext.getOutputFormatClass(); } @Override public Class<?> getOutputKeyClass() { return mapContext.getOutputKeyClass(); } @Override public Class<?> getOutputValueClass() { return mapContext.getOutputValueClass(); } @Override public Class<? extends Partitioner<?, ?>> getPartitionerClass() throws ClassNotFoundException { return mapContext.getPartitionerClass(); } @Override public Class<? extends Reducer<?, ?, ?, ?>> getReducerClass() throws ClassNotFoundException { return mapContext.getReducerClass(); } @Override public RawComparator<?> getSortComparator() { return mapContext.getSortComparator(); } @Override public boolean getSymlink() { return mapContext.getSymlink(); } @Override public Path getWorkingDirectory() throws IOException { return mapContext.getWorkingDirectory(); } @Override public void progress() { mapContext.progress(); } @Override public boolean getProfileEnabled() { return mapContext.getProfileEnabled(); } @Override public String getProfileParams() { return mapContext.getProfileParams(); } @Override public IntegerRanges getProfileTaskRange(boolean isMap) { return mapContext.getProfileTaskRange(isMap); } @Override public String getUser() { return mapContext.getUser(); } @Override public Credentials getCredentials() { return mapContext.getCredentials(); } @Override public float getProgress() { return mapContext.getProgress(); } }; mapper.run(con); // Flush and close record writers. rw.close(context); table = new QueryLogic(); table.setMetadataTableName(METADATA_TABLE_NAME); table.setTableName(TABLE_NAME); table.setIndexTableName(INDEX_TABLE_NAME); table.setReverseIndexTableName(RINDEX_TABLE_NAME); table.setUseReadAheadIterator(false); table.setUnevaluatedFields(Collections.singletonList("TEXT")); }
From source file:org.apache.giraph.yarn.GiraphYarnTask.java
License:Apache License
/** * Utility to generate dummy Mapper#Context for use in Giraph internals. * This is the "key hack" to inject MapReduce-related data structures * containing YARN cluster metadata (and our GiraphConf from the AppMaster) * into our Giraph BSP task code.//ww w .j a va2s . co m * @param tid the TaskAttemptID to construct this Mapper#Context from. * @return sort of a Mapper#Context if you squint just right. */ private Context buildProxyMapperContext(final TaskAttemptID tid) { MapContext mc = new MapContextImpl<Object, Object, Object, Object>(conf, // our Configuration, populated back at the GiraphYarnClient. tid, // our TaskAttemptId, generated w/YARN app, container, attempt IDs null, // RecordReader here will never be used by Giraph null, // RecordWriter here will never be used by Giraph null, // OutputCommitter here will never be used by Giraph new TaskAttemptContextImpl.DummyReporter() { // goes in task logs for now @Override public void setStatus(String msg) { LOG.info("[STATUS: task-" + bspTaskId + "] " + msg); } }, null); // Input split setting here will never be used by Giraph // now, we wrap our MapContext ref so we can produce a Mapper#Context WrappedMapper<Object, Object, Object, Object> wrappedMapper = new WrappedMapper<Object, Object, Object, Object>(); return wrappedMapper.getMapContext(mc); }
From source file:org.tensorflow.hadoop.io.TFRecordFileTest.java
License:Open Source License
@Test public void testInputOutputFormat() throws Exception { Configuration conf = new Configuration(); Job job = Job.getInstance(conf);// ww w . jav a 2 s. c o m Path outdir = new Path(System.getProperty("test.build.data", "/tmp"), "tfr-test"); TFRecordFileOutputFormat.setOutputPath(job, outdir); TaskAttemptContext context = MapReduceTestUtil.createDummyMapTaskAttemptContext(job.getConfiguration()); OutputFormat<BytesWritable, NullWritable> outputFormat = new TFRecordFileOutputFormat(); OutputCommitter committer = outputFormat.getOutputCommitter(context); committer.setupJob(job); RecordWriter<BytesWritable, NullWritable> writer = outputFormat.getRecordWriter(context); // Write Example with random numbers Random rand = new Random(); Map<Long, Long> records = new TreeMap<Long, Long>(); try { for (int i = 0; i < RECORDS; ++i) { long randValue = rand.nextLong(); records.put((long) i, randValue); Int64List data = Int64List.newBuilder().addValue(i).addValue(randValue).build(); Feature feature = Feature.newBuilder().setInt64List(data).build(); Features features = Features.newBuilder().putFeature("data", feature).build(); Example example = Example.newBuilder().setFeatures(features).build(); BytesWritable key = new BytesWritable(example.toByteArray()); writer.write(key, NullWritable.get()); } } finally { writer.close(context); } committer.commitTask(context); committer.commitJob(job); // Read and compare TFRecordFileInputFormat.setInputPaths(job, outdir); InputFormat<BytesWritable, NullWritable> inputFormat = new TFRecordFileInputFormat(); for (InputSplit split : inputFormat.getSplits(job)) { RecordReader<BytesWritable, NullWritable> reader = inputFormat.createRecordReader(split, context); MapContext<BytesWritable, NullWritable, BytesWritable, NullWritable> mcontext = new MapContextImpl<BytesWritable, NullWritable, BytesWritable, NullWritable>( job.getConfiguration(), context.getTaskAttemptID(), reader, null, null, MapReduceTestUtil.createDummyReporter(), split); reader.initialize(split, mcontext); try { while (reader.nextKeyValue()) { BytesWritable bytes = reader.getCurrentKey(); Example example = Example.parseFrom(bytes.getBytes()); Int64List data = example.getFeatures().getFeatureMap().get("data").getInt64List(); Long key = data.getValue(0); Long value = data.getValue(1); assertEquals(records.get(key), value); records.remove(key); } } finally { reader.close(); } } assertEquals(0, records.size()); }