Example usage for org.apache.hadoop.mapred FileOutputFormat setCompressOutput

Introduction

In this page you can find the example usage for org.apache.hadoop.mapred FileOutputFormat setCompressOutput.

Prototype

public static void setCompressOutput(JobConf conf, boolean compress) 

Source Link

Document

Set whether the output of the job is compressed.

Usage

From source file:hibench.PageRankDataGenerator.java

License:Apache License

private void createPageRankNodes() throws IOException {

    LOG.info("Creating PageRank nodes...", null);

    JobConf job = new JobConf(WebDataGen.class);
    String jobname = "Create " + paths.dname + " pagerank nodes";

    job.setJobName(jobname);/*  w w  w.  java  2 s . c o  m*/

    job.setOutputKeyClass(NullWritable.class);
    job.setOutputValueClass(Text.class);

    FileInputFormat.setInputPaths(job, paths.getPath(DataPaths.LINKS));
    job.setInputFormat(TextInputFormat.class);

    if (options.PAGERANK_NODE_BALANCE) {
        /***
         * Balance the output order of nodes, to prevent the running
         * of pagerank bench from potential data skew
         */
        job.setMapOutputKeyClass(LongWritable.class);
        job.setMapOutputValueClass(NullWritable.class);

        job.setMapperClass(BalancedLinkNodesMapper.class);
        job.setReducerClass(BalancedLinkNodesReducer.class);
        //         job.setPartitionerClass(ModulusPartitioner.class);

        if (options.reds > 0) {
            job.setNumReduceTasks(options.reds);
        } else {
            job.setNumReduceTasks(DataOptions.getMaxNumReduce());
        }
    } else {
        job.setMapOutputKeyClass(Text.class);

        job.setMapperClass(OutputLinkNodesMapper.class);
        job.setNumReduceTasks(0);
    }

    if (options.SEQUENCE_OUT) {
        job.setOutputFormat(SequenceFileOutputFormat.class);
    } else {
        job.setOutputFormat(TextOutputFormat.class);
    }

    if (null != options.codecClass) {
        job.set("mapred.output.compression.type", "BLOCK");
        FileOutputFormat.setCompressOutput(job, true);
        FileOutputFormat.setOutputCompressorClass(job, options.codecClass);
    }

    FileOutputFormat.setOutputPath(job, paths.getResult(DataPaths.VERTICALS));

    LOG.info("Running Job: " + jobname);
    LOG.info("Links file " + paths.getPath(DataPaths.LINKS) + " as input");
    LOG.info("Vertices file " + paths.getResult(DataPaths.VERTICALS) + " as output");
    JobClient.runJob(job);
    LOG.info("Finished Running Job: " + jobname);

    LOG.info("Cleaning temp files...");
    paths.cleanTempFiles(paths.getResult(DataPaths.VERTICALS));
}

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From source file:hibench.PageRankDataGenerator.java

License:Apache License

/***
 * Create pagerank edge table, output link A->B as <A, B> pairs
 * @throws IOException/*from w w  w.j  ava2  s.  com*/
 */
private void createPageRankLinks() throws IOException {

    LOG.info("Creating PageRank links", null);

    JobConf job = new JobConf(WebDataGen.class);
    String jobname = "Create " + paths.dname + " pagerank links";

    job.setJobName(jobname);

    job.setOutputKeyClass(NullWritable.class);
    job.setOutputValueClass(Text.class);
    job.setMapOutputKeyClass(Text.class);

    job.setNumReduceTasks(0);

    FileInputFormat.setInputPaths(job, paths.getPath(DataPaths.T_LINK_PAGE));
    job.setInputFormat(TextInputFormat.class);

    job.setMapperClass(OutputLinkEdgesMapper.class);

    if (options.SEQUENCE_OUT) {
        job.setOutputFormat(SequenceFileOutputFormat.class);
    } else {
        job.setOutputFormat(TextOutputFormat.class);
    }

    if (null != options.codecClass) {
        job.set("mapred.output.compression.type", "BLOCK");
        FileOutputFormat.setCompressOutput(job, true);
        FileOutputFormat.setOutputCompressorClass(job, options.codecClass);
    }

    FileOutputFormat.setOutputPath(job, paths.getResult(DataPaths.EDGES));

    LOG.info("Running Job: " + jobname);
    LOG.info("Table link-page " + paths.getPath(DataPaths.T_LINK_PAGE) + " as input");
    LOG.info("Edges file " + paths.getResult(DataPaths.EDGES) + " as output");
    JobClient.runJob(job);
    LOG.info("Finished Running Job: " + jobname);

    LOG.info("Cleaning temp files...");
    paths.cleanTempFiles(paths.getResult(DataPaths.EDGES));
}

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From source file:mapreduce.BigramCount.java

License:Apache License

/**
 * Runs this tool.//from w ww. j  a  va2s.co m
 */
public int run(String[] args) throws Exception {
    if (args.length != 2) {
        printUsage();
        return -1;
    }

    String inputPath = args[0];
    String outputPath = args[1];

    int mapTasks = 1;//Integer.parseInt(args[2]);
    int reduceTasks = 1;//Integer.parseInt(args[3]);

    sLogger.info("Tool: BigramCount");
    sLogger.info(" - input path: " + inputPath);
    sLogger.info(" - output path: " + outputPath);
    sLogger.info(" - number of mappers: " + mapTasks);
    sLogger.info(" - number of reducers: " + reduceTasks);

    JobConf conf = new JobConf(BigramCount.class);
    conf.setJobName("BigramCount");

    conf.setNumMapTasks(mapTasks);
    conf.setNumReduceTasks(reduceTasks);

    FileInputFormat.setInputPaths(conf, new Path(inputPath));
    FileOutputFormat.setOutputPath(conf, new Path(outputPath));
    FileOutputFormat.setCompressOutput(conf, false);

    /**
     *  Note that these must match the Class arguments given in the mapper 
     */
    conf.setOutputKeyClass(WordPair.class);
    conf.setOutputValueClass(IntWritable.class);

    conf.setMapperClass(MyMapper.class);
    conf.setPartitionerClass(MyPartitioner.class);
    conf.setCombinerClass(MyReducer.class);
    conf.setReducerClass(MyReducer.class);

    // Delete the output directory if it exists already
    Path outputDir = new Path(outputPath);
    FileSystem.get(outputDir.toUri(), conf).delete(outputDir, true);

    long startTime = System.currentTimeMillis();
    JobClient.runJob(conf);
    sLogger.info("Job Finished in " + (System.currentTimeMillis() - startTime) / 1000.0 + " seconds");

    return 0;
}

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From source file:nthu.scopelab.tsqr.ssvd.BtJob.java

License:Apache License

public static void run(Configuration conf, Path[] inputPath, Path btPath, String qrfPath, int k, int p,
        int outerBlockHeight, int reduceTasks, boolean outputBBtProducts, String reduceSchedule, int mis)
        throws Exception {
    boolean outputQ = true;

    String stages[] = reduceSchedule.split(",");

    JobConf job = new JobConf(conf, BtJob.class);
    job.setInputFormat(SequenceFileInputFormat.class);
    job.setOutputFormat(SequenceFileOutputFormat.class);
    job.setInt(SCHEDULE_NUM, stages.length);
    job.setInt(PROP_OUTER_PROD_BLOCK_HEIGHT, outerBlockHeight);
    job.setInt(QJob.PROP_K, k);/*  w  ww . j av a 2  s  .  co m*/
    job.setInt(QJob.PROP_P, p);
    job.setBoolean(QmultiplyJob.OUTPUT_Q, outputQ);
    job.setBoolean(PROP_OUPTUT_BBT_PRODUCTS, outputBBtProducts);
    job.set(QmultiplyJob.QRF_DIR, qrfPath);
    FileSystem.get(job).delete(btPath, true);

    FileOutputFormat.setOutputPath(job, btPath);

    FileOutputFormat.setCompressOutput(job, true);
    FileOutputFormat.setOutputCompressorClass(job, DefaultCodec.class);
    SequenceFileOutputFormat.setOutputCompressionType(job, CompressionType.BLOCK);

    job.setJobName("BtJob");

    job.setMapOutputKeyClass(IntWritable.class);
    job.setMapOutputValueClass(SparseRowBlockWritable.class);
    job.setOutputKeyClass(IntWritable.class);
    //job.setOutputValueClass(SparseRowBlockWritable.class);
    job.setOutputValueClass(VectorWritable.class);

    job.setMapperClass(BtMapper.class);
    job.setCombinerClass(OuterProductCombiner.class);
    job.setReducerClass(OuterProductReducer.class);

    fileGather fgather = new fileGather(inputPath, "", FileSystem.get(job));
    mis = Checker.checkMis(mis, fgather.getInputSize(), FileSystem.get(job));
    job.setNumMapTasks(fgather.recNumMapTasks(mis));

    //job.setNumReduceTasks(0);
    job.setNumReduceTasks(reduceTasks);

    FileInputFormat.setInputPaths(job, inputPath);

    if (outputQ) {
        MultipleOutputs.addNamedOutput(job, QmultiplyJob.Q_MAT, SequenceFileOutputFormat.class,
                IntWritable.class, LMatrixWritable.class);
    }
    if (outputBBtProducts) {
        MultipleOutputs.addNamedOutput(job, OUTPUT_BBT, SequenceFileOutputFormat.class, IntWritable.class,
                VectorWritable.class);
    }
    RunningJob rj = JobClient.runJob(job);
    System.out.println("Btjob Job ID: " + rj.getJobID().toString());
}

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From source file:nthu.scopelab.tsqr.ssvd.itBtJob.java

License:Apache License

public static void run(Configuration conf, Path[] inputPath, Path btPath, String qrfPath, int k, int p,
        int outerBlockHeight, int reduceTasks, boolean outputBBtProducts, String reduceSchedule, int mis)
        throws Exception {
    boolean outputQ = true;

    String stages[] = reduceSchedule.split(",");

    JobConf job = new JobConf(conf, itBtJob.class);
    job.setInputFormat(SequenceFileInputFormat.class);
    job.setOutputFormat(SequenceFileOutputFormat.class);
    job.setInt(SCHEDULE_NUM, stages.length);
    job.setInt(PROP_OUTER_PROD_BLOCK_HEIGHT, outerBlockHeight);
    job.setInt(QJob.PROP_K, k);/*from w w  w. j av  a2 s  .  c o m*/
    job.setInt(QJob.PROP_P, p);
    job.setBoolean(QmultiplyJob.OUTPUT_Q, outputQ);
    job.setBoolean(PROP_OUPTUT_BBT_PRODUCTS, outputBBtProducts);
    job.set(QmultiplyJob.QRF_DIR, qrfPath);
    FileSystem.get(job).delete(btPath, true);

    FileOutputFormat.setOutputPath(job, btPath);

    FileOutputFormat.setCompressOutput(job, true);
    FileOutputFormat.setOutputCompressorClass(job, DefaultCodec.class);
    SequenceFileOutputFormat.setOutputCompressionType(job, CompressionType.BLOCK);

    job.setJobName("itBtJob");

    job.setMapOutputKeyClass(IntWritable.class);
    job.setMapOutputValueClass(SparseRowBlockWritable.class);
    job.setOutputKeyClass(IntWritable.class);
    //job.setOutputValueClass(SparseRowBlockWritable.class);
    job.setOutputValueClass(VectorWritable.class);

    job.setMapperClass(BtMapper.class);
    job.setCombinerClass(OuterProductCombiner.class);
    job.setReducerClass(OuterProductReducer.class);

    fileGather fgather = new fileGather(inputPath, "", FileSystem.get(job));
    mis = Checker.checkMis(mis, fgather.getInputSize(), FileSystem.get(job));
    job.setNumMapTasks(fgather.recNumMapTasks(mis));

    //job.setNumReduceTasks(0);
    job.setNumReduceTasks(reduceTasks);

    FileInputFormat.setInputPaths(job, inputPath);

    if (outputQ) {
        MultipleOutputs.addNamedOutput(job, QmultiplyJob.Q_MAT, SequenceFileOutputFormat.class,
                IntWritable.class, LMatrixWritable.class);
    }
    if (outputBBtProducts) {
        MultipleOutputs.addNamedOutput(job, OUTPUT_BBT, SequenceFileOutputFormat.class, IntWritable.class,
                VectorWritable.class);
    }
    RunningJob rj = JobClient.runJob(job);
    System.out.println("itBtJob Job ID: " + rj.getJobID().toString());
}

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From source file:nthu.scopelab.tsqr.ssvd.UJob.java

License:Apache License

public void start(Configuration conf, Path inputPathQ, Path inputUHatPath, Path sigmaPath, Path outputPath,
        int k, boolean uHalfSigma, int mis) throws ClassNotFoundException, InterruptedException, IOException {
    String input = "";

    JobConf job = new JobConf(conf, UJob.class);
    jobclient = new JobClient(job);
    job.setJobName("UJob");
    job.setInputFormat(SequenceFileInputFormat.class);
    job.setOutputFormat(SequenceFileOutputFormat.class);

    job.setMapperClass(MultiplyMapper.class);

    job.setOutputKeyClass(LongWritable.class);
    job.setOutputValueClass(LMatrixWritable.class);
    job.setMapOutputKeyClass(LongWritable.class);
    job.setMapOutputValueClass(LMatrixWritable.class);

    FileSystem fs = FileSystem.get(job);
    fileGather fgather = new fileGather(
            new Path(inputPathQ.toString().substring(0, inputPathQ.toString().lastIndexOf("/") - 1)), "Q-", fs);
    mis = Checker.checkMis(mis, fgather.getInputSize(), fs);
    job.setNumMapTasks(fgather.recNumMapTasks(mis));

    job.setNumReduceTasks(0);//ww w . java2 s  .  c  om
    job.set("mapreduce.output.basename", OUTPUT_U);
    job.set(PROP_UHAT_PATH, inputUHatPath.toString());
    job.set(PROP_SIGMA_PATH, sigmaPath.toString());
    if (uHalfSigma) {
        job.set(PROP_U_HALFSIGMA, "y");
    }
    job.setInt(QJob.PROP_K, k);
    FileSystem.get(job).delete(outputPath, true);
    FileOutputFormat.setOutputPath(job, outputPath);
    FileOutputFormat.setCompressOutput(job, true);
    FileOutputFormat.setOutputCompressorClass(job, DefaultCodec.class);
    SequenceFileOutputFormat.setOutputCompressionType(job, CompressionType.BLOCK);

    FileInputFormat.setInputPaths(job, inputPathQ);
    //JobClient.runJob(job);
    jobid = jobclient.submitJob(job).getID();

}

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From source file:org.apache.avro.mapred.TestAvroMultipleOutputs.java

License:Apache License

@SuppressWarnings("deprecation")
public void testJob() throws Exception {
    JobConf job = new JobConf();

    //    private static final String UTF8 = "UTF-8";
    String dir = System.getProperty("test.dir", ".") + "/mapred";
    Path outputPath = new Path(dir + "/out");

    outputPath.getFileSystem(job).delete(outputPath);
    WordCountUtil.writeLinesFile();//www.  j  av  a2  s  .co  m

    job.setJobName("AvroMultipleOutputs");

    AvroJob.setInputSchema(job, Schema.create(Schema.Type.STRING));
    AvroJob.setOutputSchema(job, new Pair<Utf8, Long>(new Utf8(""), 0L).getSchema());

    AvroJob.setMapperClass(job, MapImpl.class);
    AvroJob.setReducerClass(job, ReduceImpl.class);

    FileInputFormat.setInputPaths(job, new Path(dir + "/in"));
    FileOutputFormat.setOutputPath(job, outputPath);
    FileOutputFormat.setCompressOutput(job, false);
    AvroMultipleOutputs.addNamedOutput(job, "myavro", AvroOutputFormat.class,
            new Pair<Utf8, Long>(new Utf8(""), 0L).getSchema());
    AvroMultipleOutputs.addNamedOutput(job, "myavro1", AvroOutputFormat.class,
            Schema.create(Schema.Type.STRING));
    AvroMultipleOutputs.addNamedOutput(job, "myavro2", AvroOutputFormat.class,
            Schema.create(Schema.Type.STRING));
    WordCountUtil.setMeta(job);

    JobClient.runJob(job);

    WordCountUtil.validateCountsFile();
}

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From source file:org.apache.avro.mapred.TestAvroMultipleOutputs.java

License:Apache License

@SuppressWarnings("deprecation")
public void testJob_noreducer() throws Exception {
    JobConf job = new JobConf();
    job.setNumReduceTasks(0);//  ww w.j av  a 2  s .c o m
    //    private static final String UTF8 = "UTF-8";
    String dir = System.getProperty("test.dir", ".") + "/mapred";
    Path outputPath = new Path(dir + "/out");

    outputPath.getFileSystem(job).delete(outputPath);
    WordCountUtil.writeLinesFile();

    job.setJobName("AvroMultipleOutputs_noreducer");

    AvroJob.setInputSchema(job, Schema.create(Schema.Type.STRING));
    AvroJob.setOutputSchema(job, new Pair<Utf8, Long>(new Utf8(""), 0L).getSchema());

    AvroJob.setMapperClass(job, MapImpl.class);

    FileInputFormat.setInputPaths(job, new Path(dir + "/in"));
    FileOutputFormat.setOutputPath(job, outputPath);
    FileOutputFormat.setCompressOutput(job, false);
    AvroMultipleOutputs.addNamedOutput(job, "myavro2", AvroOutputFormat.class,
            Schema.create(Schema.Type.STRING));
    JobClient.runJob(job);
}

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From source file:org.apache.avro.mapred.TestWeather.java

License:Apache License

/** Uses default mapper with no reduces for a map-only identity job. */
@Test/*from   w w  w  .j  av a 2s.  c  o m*/
@SuppressWarnings("deprecation")
public void testMapOnly() throws Exception {
    JobConf job = new JobConf();
    String inDir = System.getProperty("share.dir", "../../../share") + "/test/data";
    Path input = new Path(inDir + "/weather.avro");
    Path output = new Path(System.getProperty("test.dir", "target/test") + "/weather-ident");

    output.getFileSystem(job).delete(output);

    job.setJobName("identity map weather");

    AvroJob.setInputSchema(job, Weather.SCHEMA$);
    AvroJob.setOutputSchema(job, Weather.SCHEMA$);

    FileInputFormat.setInputPaths(job, input);
    FileOutputFormat.setOutputPath(job, output);
    FileOutputFormat.setCompressOutput(job, true);

    job.setNumReduceTasks(0); // map-only

    JobClient.runJob(job);

    // check output is correct
    DatumReader<Weather> reader = new SpecificDatumReader<Weather>();
    DataFileReader<Weather> check = new DataFileReader<Weather>(new File(inDir + "/weather.avro"), reader);
    DataFileReader<Weather> sorted = new DataFileReader<Weather>(
            new File(output.toString() + "/part-00000.avro"), reader);

    for (Weather w : sorted)
        assertEquals(check.next(), w);

    check.close();
    sorted.close();
}

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From source file:org.apache.avro.mapred.TestWeather.java

License:Apache License

@Test
@SuppressWarnings("deprecation")
public void testSort() throws Exception {
    JobConf job = new JobConf();
    String inDir = System.getProperty("share.dir", "../../../share") + "/test/data";
    Path input = new Path(inDir + "/weather.avro");
    Path output = new Path(System.getProperty("test.dir", "target/test") + "/weather-sort");

    output.getFileSystem(job).delete(output);

    job.setJobName("sort weather");

    AvroJob.setInputSchema(job, Weather.SCHEMA$);
    AvroJob.setMapOutputSchema(job, Pair.getPairSchema(Weather.SCHEMA$, Schema.create(Type.NULL)));
    AvroJob.setOutputSchema(job, Weather.SCHEMA$);

    AvroJob.setMapperClass(job, SortMapper.class);
    AvroJob.setReducerClass(job, SortReducer.class);

    FileInputFormat.setInputPaths(job, input);
    FileOutputFormat.setOutputPath(job, output);
    FileOutputFormat.setCompressOutput(job, true);
    AvroJob.setOutputCodec(job, SNAPPY_CODEC);

    JobClient.runJob(job);//from  w  w w  .j a  v a2  s . c o  m

    // check output is correct
    DatumReader<Weather> reader = new SpecificDatumReader<Weather>();
    DataFileReader<Weather> check = new DataFileReader<Weather>(new File(inDir + "/weather-sorted.avro"),
            reader);
    DataFileReader<Weather> sorted = new DataFileReader<Weather>(
            new File(output.toString() + "/part-00000.avro"), reader);

    for (Weather w : sorted)
        assertEquals(check.next(), w);

    check.close();
    sorted.close();

    // check that AvroMapper and AvroReducer get close() and configure() called
    assertEquals(1, mapCloseCalls.get());
    assertEquals(1, reducerCloseCalls.get());
    assertEquals(1, mapConfigureCalls.get());
    assertEquals(1, reducerConfigureCalls.get());

}

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