Example usage for org.apache.hadoop.mapreduce.lib.output FileOutputFormat setOutputPath

List of usage examples for org.apache.hadoop.mapreduce.lib.output FileOutputFormat setOutputPath

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Introduction

In this page you can find the example usage for org.apache.hadoop.mapreduce.lib.output FileOutputFormat setOutputPath.

Prototype

public static void setOutputPath(Job job, Path outputDir)

Source Link

Document

Set the Path of the output directory for the map-reduce job.

Usage

From source file:WordCountB.java

License:Apache License

public static void main(String[] args) throws Exception {
    Configuration conf = new Configuration();
    String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();
    if (otherArgs.length < 2) {
        System.err.println("Usage: wordcount <in> [<in>...] <out>");
        System.exit(2);//w w  w  .jav  a2 s  .c om
    }
    Job job = Job.getInstance(conf, "word count");
    job.setJarByClass(WordCountB.class);
    job.setMapperClass(TokenizerMapper.class);
    // Setup the Combiner
    job.setCombinerClass(IntSumReducer.class);
    // Setup the Partitioner
    job.setPartitionerClass(Letterpartitioner.class);
    job.setReducerClass(IntSumReducer.class);
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(IntWritable.class);
    for (int i = 0; i < otherArgs.length - 1; ++i) {
        FileInputFormat.addInputPath(job, new Path(otherArgs[i]));
    }
    FileOutputFormat.setOutputPath(job, new Path(otherArgs[otherArgs.length - 1]));
    System.exit(job.waitForCompletion(true) ? 0 : 1);
}

From source file:StressTest.java

License:Apache License

public static void main(String[] args) throws Exception {
    Configuration conf = new Configuration();
    // conf.addResource(new Path("../../env_vars"));

    String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();
    if (otherArgs.length != 2) {
        System.err.println("Usage: TweetCategorizer <in> <out>");
        System.exit(2);/*from   ww w .  ja v a  2 s .  co  m*/
    }

    Job job = new Job(conf, "categorize tweets");
    job.setJarByClass(TweetCategorizer.class);
    job.setMapperClass(TokenizerMapper.class);
    // job.setCombinerClass(IntSumReducer.class);
    // job.setReducerClass(IntSumReducer.class);
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(Text.class);
    FileInputFormat.addInputPath(job, new Path(otherArgs[0]));
    FileOutputFormat.setOutputPath(job, new Path(otherArgs[1]));
    System.exit(job.waitForCompletion(true) ? 0 : 1);
}

From source file:PerTaskTally.java

License:Apache License

public static void main(String[] args) throws Exception {
    Configuration conf = new Configuration();
    String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();
    if (otherArgs.length != 2) {
        System.err.println("Usage: wordcount <in> <out>");
        System.exit(2);//from  w  w  w. j a  v a  2  s  .c  o  m
    }
    Job job = new Job(conf, "word count");
    job.setJarByClass(PerMapTally.class);
    job.setMapperClass(TokenizerMapper.class);
    // Aniket changes starts
    /* Here the partitioner is being called*/
    job.setPartitionerClass(WordPartitioner.class);
    // Aniket changes ends
    // Part 4 Aniket changes starts
    /* Here I am just disabling the combiner */
    // job.setCombinerClass(IntSumReducer.class);
    // Part 4 Aniket changes ends
    job.setReducerClass(IntSumReducer.class);
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(IntWritable.class);
    FileInputFormat.addInputPath(job, new Path(otherArgs[0]));
    FileOutputFormat.setOutputPath(job, new Path(otherArgs[1]));
    System.exit(job.waitForCompletion(true) ? 0 : 1);
}

From source file:WordCount_PerTaskTally.java

License:Apache License

public static void main(String[] args) throws Exception {
    Configuration conf = new Configuration();

    GenericOptionsParser parser = new GenericOptionsParser(conf, args);
    String[] otherArgs = parser.getRemainingArgs();

    if (otherArgs.length != 2) {
        System.err.println("Usage: wordcount <in> <out>");
        System.exit(2);/*from   w  w w.j  av a2s.  c o  m*/
    }
    Job job = new Job(conf, "word count");
    job.setJarByClass(WordCount_PerTaskTally.class);
    job.setMapperClass(TokenizerMapper.class);

    // disable combiner

    // job.setCombinerClass(IntSumReducer.class);

    job.setPartitionerClass(WordPartitioner.class);
    job.setNumReduceTasks(5);

    job.setReducerClass(IntSumReducer.class);
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(IntWritable.class);
    FileInputFormat.addInputPath(job, new Path(otherArgs[0]));
    FileOutputFormat.setOutputPath(job, new Path(otherArgs[1]));
    System.exit(job.waitForCompletion(true) ? 0 : 1);
}

From source file:ComputeCooccurrenceMatrixStripes.java

License:Apache License

/**
 * Runs this tool./* w  ww .  j a v  a 2 s. c om*/
 */
@SuppressWarnings({ "static-access" })
public int run(String[] args) throws Exception {
    Options options = new Options();

    options.addOption(OptionBuilder.withArgName("path").hasArg().withDescription("input path").create(INPUT));
    options.addOption(OptionBuilder.withArgName("path").hasArg().withDescription("output path").create(OUTPUT));
    options.addOption(OptionBuilder.withArgName("num").hasArg().withDescription("window size").create(WINDOW));
    options.addOption(OptionBuilder.withArgName("num").hasArg().withDescription("number of reducers")
            .create(NUM_REDUCERS));

    CommandLine cmdline;
    CommandLineParser parser = new GnuParser();

    try {
        cmdline = parser.parse(options, args);
    } catch (ParseException exp) {
        System.err.println("Error parsing command line: " + exp.getMessage());
        return -1;
    }

    if (!cmdline.hasOption(INPUT) || !cmdline.hasOption(OUTPUT)) {
        System.out.println("args: " + Arrays.toString(args));
        HelpFormatter formatter = new HelpFormatter();
        formatter.setWidth(120);
        formatter.printHelp(this.getClass().getName(), options);
        ToolRunner.printGenericCommandUsage(System.out);
        return -1;
    }

    String inputPath = cmdline.getOptionValue(INPUT);
    String outputPath = cmdline.getOptionValue(OUTPUT);
    int reduceTasks = cmdline.hasOption(NUM_REDUCERS) ? Integer.parseInt(cmdline.getOptionValue(NUM_REDUCERS))
            : 1;
    int window = cmdline.hasOption(WINDOW) ? Integer.parseInt(cmdline.getOptionValue(WINDOW)) : 2;

    LOG.info("Tool: " + ComputeCooccurrenceMatrixStripes.class.getSimpleName());
    LOG.info(" - input path: " + inputPath);
    LOG.info(" - output path: " + outputPath);
    LOG.info(" - window: " + window);
    LOG.info(" - number of reducers: " + reduceTasks);

    Job job = Job.getInstance(getConf());
    job.setJobName(ComputeCooccurrenceMatrixStripes.class.getSimpleName());
    job.setJarByClass(ComputeCooccurrenceMatrixStripes.class);

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

    job.getConfiguration().setInt("window", window);

    job.setNumReduceTasks(reduceTasks);

    FileInputFormat.setInputPaths(job, new Path(inputPath));
    FileOutputFormat.setOutputPath(job, new Path(outputPath));

    job.setMapOutputKeyClass(Text.class);
    job.setOutputValueClass(String2IntOpenHashMapWritable.class);
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(String2IntOpenHashMapWritable.class);

    job.setMapperClass(MyMapper.class);
    job.setCombinerClass(MyReducer.class);
    job.setReducerClass(MyReducer.class);

    long startTime = System.currentTimeMillis();
    job.waitForCompletion(true);
    System.out.println("Job Finished in " + (System.currentTimeMillis() - startTime) / 1000.0 + " seconds");

    return 0;
}

From source file:BuildPageRankRecords.java

License:Apache License

/**
 * Runs this tool./*w  ww. jav a2  s  . c om*/
 */
@SuppressWarnings({ "static-access" })
public int run(String[] args) throws Exception {
    Options options = new Options();

    options.addOption(OptionBuilder.withArgName("path").hasArg().withDescription("input path").create(INPUT));
    options.addOption(OptionBuilder.withArgName("path").hasArg().withDescription("output path").create(OUTPUT));
    options.addOption(
            OptionBuilder.withArgName("num").hasArg().withDescription("number of nodes").create(NUM_NODES));

    CommandLine cmdline;
    CommandLineParser parser = new GnuParser();

    try {
        cmdline = parser.parse(options, args);
    } catch (ParseException exp) {
        System.err.println("Error parsing command line: " + exp.getMessage());
        return -1;
    }

    if (!cmdline.hasOption(INPUT) || !cmdline.hasOption(OUTPUT) || !cmdline.hasOption(NUM_NODES)) {
        System.out.println("args: " + Arrays.toString(args));
        HelpFormatter formatter = new HelpFormatter();
        formatter.setWidth(120);
        formatter.printHelp(this.getClass().getName(), options);
        ToolRunner.printGenericCommandUsage(System.out);
        return -1;
    }

    String inputPath = cmdline.getOptionValue(INPUT);
    String outputPath = cmdline.getOptionValue(OUTPUT);
    int n = Integer.parseInt(cmdline.getOptionValue(NUM_NODES));

    LOG.info("Tool name: " + BuildPageRankRecords.class.getSimpleName());
    LOG.info(" - inputDir: " + inputPath);
    LOG.info(" - outputDir: " + outputPath);
    LOG.info(" - numNodes: " + n);

    Configuration conf = getConf();
    conf.setInt(NODE_CNT_FIELD, n);
    conf.setInt("mapred.min.split.size", 1024 * 1024 * 1024);

    Job job = Job.getInstance(conf);
    job.setJobName(BuildPageRankRecords.class.getSimpleName() + ":" + inputPath);
    job.setJarByClass(BuildPageRankRecords.class);

    job.setNumReduceTasks(0);

    FileInputFormat.addInputPath(job, new Path(inputPath));
    FileOutputFormat.setOutputPath(job, new Path(outputPath));

    job.setInputFormatClass(TextInputFormat.class);
    job.setOutputFormatClass(SequenceFileOutputFormat.class);

    job.setMapOutputKeyClass(IntWritable.class);
    job.setMapOutputValueClass(PageRankNode.class);

    job.setOutputKeyClass(IntWritable.class);
    job.setOutputValueClass(PageRankNode.class);

    job.setMapperClass(MyMapper.class);

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

    job.waitForCompletion(true);

    return 0;
}

From source file:Distinct.java

License:Apache License

public static void main(String[] args) throws Exception {
    Configuration conf = new Configuration();
    String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();
    if (otherArgs.length != 2) {
        System.err.println("Usage: Distinct <in> <out>");
        System.exit(2);/*from ww w.j  a  va 2s.  c  om*/
    }
    Job job = Job.getInstance(conf, "distinct1");
    job.setJarByClass(Distinct.class);
    job.setMapperClass(TokenizerMapper1.class);
    job.setReducerClass(Reducer1.class);
    FileInputFormat.addInputPath(job, new Path(otherArgs[0]));
    FileOutputFormat.setOutputPath(job, new Path(tempDir));
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(IntWritable.class);
    job.waitForCompletion(true);

    Configuration conf2 = new Configuration();
    Job job2 = Job.getInstance(conf2, "distinct2");
    job2.setJarByClass(Distinct.class);
    job2.setMapperClass(TokenizerMapper2.class);
    job2.setReducerClass(Reducer2.class);
    FileInputFormat.addInputPath(job2, new Path(tempDir));
    FileOutputFormat.setOutputPath(job2, new Path(otherArgs[1]));
    job2.setOutputKeyClass(Text.class);
    job2.setOutputValueClass(IntWritable.class);
    System.exit(job2.waitForCompletion(true) ? 0 : 1);
}

From source file:BigBWA.java

License:Open Source License

@Override
public int run(String[] args) throws Exception {
    Configuration conf = this.getConf();

    for (String argumento : args) {
        LOG.info("Arg: " + argumento);
    }//from w  w  w . jav a  2 s .  c o m

    String inputPath = "";
    String outputPath = "";

    boolean useReducer = false;

    BwaOptions options = new BwaOptions(args);

    //We set the timeout and stablish the bwa library to call BWA methods
    conf.set("mapreduce.task.timeout", "0");
    conf.set("mapreduce.map.env", "LD_LIBRARY_PATH=./bwa.zip/");

    //==================Algorithm election==================
    //One of the algorithms is going to be in use, because tge default is always specified.
    if (options.isMemAlgorithm()) {
        //Case of the mem algorithm
        conf.set("mem", "true");
        conf.set("aln", "false");
        conf.set("bwasw", "false");
    }

    else if (options.isAlnAlgorithm()) {
        // Case of aln algorithm
        conf.set("mem", "false");
        conf.set("aln", "true");
        conf.set("bwasw", "false");
    }

    else if (options.isBwaswAlgorithm()) {
        // Case of bwasw algorithm
        conf.set("mem", "false");
        conf.set("aln", "false");
        conf.set("bwasw", "true");
    }

    //==================Index election==================
    if (options.getIndexPath() != "") {
        conf.set("indexRoute", options.getIndexPath());
    } else {
        System.err.println("No index has been found. Aborting.");
        System.exit(1);
    }

    //==================Type of reads election==================
    //There is always going to be a type of reads, because default is paired
    if (options.isPairedReads()) {
        conf.set("paired", "true");
        conf.set("single", "false");
    } else if (options.isSingleReads()) {
        conf.set("paired", "false");
        conf.set("single", "true");
    }

    //==================Use of reducer==================
    if (options.isUseReducer()) {
        useReducer = true;
        conf.set("useReducer", "true");
    } else {
        conf.set("useReducer", "false");
    }

    //==================Number of threads per map==================
    if (options.getNumThreads() != "0") {
        conf.set("bwathreads", options.getNumThreads());
    }

    //==================RG Header===================
    if (options.getReadgroupHeader() != "") {
        conf.set("rgheader", options.getReadgroupHeader());
    }

    //==================Input and output paths==================
    inputPath = options.getInputPath();
    outputPath = options.getOutputPath();

    conf.set("outputGenomics", outputPath);

    //==================Partition number==================
    if (options.getPartitionNumber() != 0) {
        try {
            FileSystem fs = FileSystem.get(conf);

            Path inputFilePath = new Path(inputPath);

            ContentSummary cSummary = fs.getContentSummary(inputFilePath);

            long length = cSummary.getLength();

            fs.close();

            conf.set("mapreduce.input.fileinputformat.split.maxsize",
                    String.valueOf((length) / options.getPartitionNumber()));
            conf.set("mapreduce.input.fileinputformat.split.minsize",
                    String.valueOf((length) / options.getPartitionNumber()));
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            LOG.error(e.toString());

            System.exit(1);
        }

    }

    //Job job = new Job(conf,"BigBWA_"+outputPath);
    Job job = Job.getInstance(conf, "BigBWA_" + outputPath);

    job.setJarByClass(BigBWA.class);
    job.setMapperClass(BigBWAMap.class);
    //job.setCombinerClass(BigBWACombiner.class);

    if (useReducer) {
        job.setReducerClass(BigBWAReducer.class);

        job.setMapOutputKeyClass(IntWritable.class);
        job.setMapOutputValueClass(Text.class);

        job.setNumReduceTasks(1);
    } else {
        job.setNumReduceTasks(0);
    }

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

    FileInputFormat.addInputPath(job, new Path(inputPath));
    FileOutputFormat.setOutputPath(job, new Path(outputPath));

    return (job.waitForCompletion(true) ? 0 : 1);
}

From source file:BigramRelativeFrequencyTuple.java

License:Apache License

/**
 * Runs this tool.//from   w w w.  jav  a  2  s.  c  om
 */
public int run(String[] args) throws Exception {
    if (args.length != 3) {
        printUsage();
        return -1;
    }

    String inputPath = args[0];
    String outputPath = args[1];
    int reduceTasks = Integer.parseInt(args[2]);

    LOG.info("Tool name: " + BigramRelativeFrequencyTuple.class.getSimpleName());
    LOG.info(" - input path: " + inputPath);
    LOG.info(" - output path: " + outputPath);
    LOG.info(" - num reducers: " + reduceTasks);

    Job job = Job.getInstance(getConf());
    job.setJobName(BigramRelativeFrequencyTuple.class.getSimpleName());
    job.setJarByClass(BigramRelativeFrequencyTuple.class);

    job.setNumReduceTasks(reduceTasks);

    FileInputFormat.setInputPaths(job, new Path(inputPath));
    FileOutputFormat.setOutputPath(job, new Path(outputPath));

    job.setMapOutputKeyClass(BinSedesTuple.class);
    job.setMapOutputValueClass(FloatWritable.class);
    job.setOutputKeyClass(BinSedesTuple.class);
    job.setOutputValueClass(FloatWritable.class);
    job.setOutputFormatClass(SequenceFileOutputFormat.class);

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

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

    long startTime = System.currentTimeMillis();
    job.waitForCompletion(true);
    System.out.println("Job Finished in " + (System.currentTimeMillis() - startTime) / 1000.0 + " seconds");

    return 0;
}

From source file:WordCountA.java

License:Apache License

public static void main(String[] args) throws Exception {
    Configuration conf = new Configuration();
    String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();
    if (otherArgs.length < 2) {
        System.err.println("Usage: wordcount <in> [<in>...] <out>");
        System.exit(2);// w w  w  .  ja  va 2s . c o m
    }
    Job job = Job.getInstance(conf, "word count");
    job.setJarByClass(WordCountA.class);
    job.setMapperClass(TokenizerMapper.class);
    // Disable the combiner
    // job.setCombinerClass(IntSumReducer.class);
    // Setup the Partitioner
    job.setPartitionerClass(Letterpartitioner.class);
    job.setReducerClass(IntSumReducer.class);
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(IntWritable.class);
    for (int i = 0; i < otherArgs.length - 1; ++i) {
        FileInputFormat.addInputPath(job, new Path(otherArgs[i]));
    }
    FileOutputFormat.setOutputPath(job, new Path(otherArgs[otherArgs.length - 1]));
    System.exit(job.waitForCompletion(true) ? 0 : 1);
}