Examples with OutputCommitterDescriptor org.apache.tez.dag.api.OutputCommitterDescriptor used on opensource projects

Example 11 with OutputCommitterDescriptor

use of org.apache.tez.dag.api.OutputCommitterDescriptor in project tez by apache.

the class FilterLinesByWord method run.

@Override
public int run(String[] args) throws Exception {
    Configuration conf = getConf();
    String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();
    Credentials credentials = new Credentials();
    boolean generateSplitsInClient = false;
    SplitsInClientOptionParser splitCmdLineParser = new SplitsInClientOptionParser();
    try {
        generateSplitsInClient = splitCmdLineParser.parse(otherArgs, false);
        otherArgs = splitCmdLineParser.getRemainingArgs();
    } catch (ParseException e1) {
        System.err.println("Invalid options");
        printUsage();
        return 2;
    }
    if (otherArgs.length != 3) {
        printUsage();
        return 2;
    }
    String inputPath = otherArgs[0];
    String outputPath = otherArgs[1];
    String filterWord = otherArgs[2];
    FileSystem fs = FileSystem.get(conf);
    if (fs.exists(new Path(outputPath))) {
        System.err.println("Output directory : " + outputPath + " already exists");
        return 2;
    }
    TezConfiguration tezConf = new TezConfiguration(conf);
    fs.getWorkingDirectory();
    Path stagingDir = new Path(fs.getWorkingDirectory(), UUID.randomUUID().toString());
    tezConf.set(TezConfiguration.TEZ_AM_STAGING_DIR, stagingDir.toString());
    TezClientUtils.ensureStagingDirExists(tezConf, stagingDir);
    String jarPath = ClassUtil.findContainingJar(FilterLinesByWord.class);
    if (jarPath == null) {
        throw new TezUncheckedException("Could not find any jar containing" + FilterLinesByWord.class.getName() + " in the classpath");
    }
    Path remoteJarPath = fs.makeQualified(new Path(stagingDir, "dag_job.jar"));
    fs.copyFromLocalFile(new Path(jarPath), remoteJarPath);
    FileStatus remoteJarStatus = fs.getFileStatus(remoteJarPath);
    TokenCache.obtainTokensForNamenodes(credentials, new Path[] { remoteJarPath }, conf);
    Map<String, LocalResource> commonLocalResources = new TreeMap<String, LocalResource>();
    LocalResource dagJarLocalRsrc = LocalResource.newInstance(ConverterUtils.getYarnUrlFromPath(remoteJarPath), LocalResourceType.FILE, LocalResourceVisibility.APPLICATION, remoteJarStatus.getLen(), remoteJarStatus.getModificationTime());
    commonLocalResources.put("dag_job.jar", dagJarLocalRsrc);
    TezClient tezSession = TezClient.create("FilterLinesByWordSession", tezConf, commonLocalResources, credentials);
    // Why do I need to start the TezSession.
    tezSession.start();
    Configuration stage1Conf = new JobConf(conf);
    stage1Conf.set(FILTER_PARAM_NAME, filterWord);
    Configuration stage2Conf = new JobConf(conf);
    stage2Conf.set(FileOutputFormat.OUTDIR, outputPath);
    stage2Conf.setBoolean("mapred.mapper.new-api", false);
    UserPayload stage1Payload = TezUtils.createUserPayloadFromConf(stage1Conf);
    // Setup stage1 Vertex
    Vertex stage1Vertex = Vertex.create("stage1", ProcessorDescriptor.create(FilterByWordInputProcessor.class.getName()).setUserPayload(stage1Payload)).addTaskLocalFiles(commonLocalResources);
    DataSourceDescriptor dsd;
    if (generateSplitsInClient) {
        // TODO TEZ-1406. Dont' use MRInputLegacy
        stage1Conf.set(FileInputFormat.INPUT_DIR, inputPath);
        stage1Conf.setBoolean("mapred.mapper.new-api", false);
        dsd = MRInputHelpers.configureMRInputWithLegacySplitGeneration(stage1Conf, stagingDir, true);
    } else {
        dsd = MRInputLegacy.createConfigBuilder(stage1Conf, TextInputFormat.class, inputPath).groupSplits(false).build();
    }
    stage1Vertex.addDataSource("MRInput", dsd);
    // Setup stage2 Vertex
    Vertex stage2Vertex = Vertex.create("stage2", ProcessorDescriptor.create(FilterByWordOutputProcessor.class.getName()).setUserPayload(TezUtils.createUserPayloadFromConf(stage2Conf)), 1);
    stage2Vertex.addTaskLocalFiles(commonLocalResources);
    // Configure the Output for stage2
    OutputDescriptor od = OutputDescriptor.create(MROutput.class.getName()).setUserPayload(TezUtils.createUserPayloadFromConf(stage2Conf));
    OutputCommitterDescriptor ocd = OutputCommitterDescriptor.create(MROutputCommitter.class.getName());
    stage2Vertex.addDataSink("MROutput", DataSinkDescriptor.create(od, ocd, null));
    UnorderedKVEdgeConfig edgeConf = UnorderedKVEdgeConfig.newBuilder(Text.class.getName(), TextLongPair.class.getName()).setFromConfiguration(tezConf).build();
    DAG dag = DAG.create("FilterLinesByWord");
    Edge edge = Edge.create(stage1Vertex, stage2Vertex, edgeConf.createDefaultBroadcastEdgeProperty());
    dag.addVertex(stage1Vertex).addVertex(stage2Vertex).addEdge(edge);
    LOG.info("Submitting DAG to Tez Session");
    DAGClient dagClient = tezSession.submitDAG(dag);
    LOG.info("Submitted DAG to Tez Session");
    DAGStatus dagStatus = null;
    String[] vNames = { "stage1", "stage2" };
    try {
        while (true) {
            dagStatus = dagClient.getDAGStatus(null);
            if (dagStatus.getState() == DAGStatus.State.RUNNING || dagStatus.getState() == DAGStatus.State.SUCCEEDED || dagStatus.getState() == DAGStatus.State.FAILED || dagStatus.getState() == DAGStatus.State.KILLED || dagStatus.getState() == DAGStatus.State.ERROR) {
                break;
            }
            try {
                Thread.sleep(500);
            } catch (InterruptedException e) {
            // continue;
            }
        }
        while (dagStatus.getState() == DAGStatus.State.RUNNING) {
            try {
                ExampleDriver.printDAGStatus(dagClient, vNames);
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                // continue;
                }
                dagStatus = dagClient.getDAGStatus(null);
            } catch (TezException e) {
                LOG.error("Failed to get application progress. Exiting");
                return -1;
            }
        }
        dagStatus = dagClient.getDAGStatus(Sets.newHashSet(StatusGetOpts.GET_COUNTERS));
    } finally {
        fs.delete(stagingDir, true);
        tezSession.stop();
    }
    ExampleDriver.printDAGStatus(dagClient, vNames, true, true);
    LOG.info("Application completed. " + "FinalState=" + dagStatus.getState());
    return dagStatus.getState() == DAGStatus.State.SUCCEEDED ? 0 : 1;
}