Example usage for org.apache.hadoop.mapreduce Job setOutputValueClass

List of usage examples for org.apache.hadoop.mapreduce Job setOutputValueClass

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Introduction

In this page you can find the example usage for org.apache.hadoop.mapreduce Job setOutputValueClass.

Prototype

public void setOutputValueClass(Class<?> theClass) throws IllegalStateException

Source Link

Document

Set the value class for job outputs.

Usage

From source file:com.flytxt.yesbank.processor.HdfsToHbaseEngine.java

License:Open Source License

public static void main(String[] args) throws Exception {
    if (args.length < 1) {
        System.out.println("Hdfs to Hbase Engine requires the model Id as Input ...");
        System.exit(1);//  ww w . j  a  va  2 s .com
    }

    String modelId = args[0];

    DBConnection dbConnection = DBConnection.getInstance();
    dbConnection.loadDbProperties();
    dbConnection.initializeDataBaseConnection();

    String hfdsInputLoc = dbConnection.getHdfsInputDirectory(modelId);

    if (hfdsInputLoc != null) {

        Configuration conf = new Configuration();
        String params = args[0];
        conf.set("test", params);
        Job job = new Job(conf);

        // Configuration conf = new Configuration();
        // Job job = Job.getInstance(conf, "hfds to hbase Engine");
        job.setJarByClass(HdfsToHbaseEngine.class);
        job.setMapperClass(HdfsEngineMapper.class);
        // job.setCombinerClass(test.class);
        // job.setReducerClass(test.class);
        job.setOutputKeyClass(Text.class);
        job.setOutputValueClass(IntWritable.class);
        FileInputFormat.addInputPath(job, new Path(hfdsInputLoc));
        job.setOutputFormatClass(NullOutputFormat.class);
        // FileOutputFormat.setOutputPath(job, new Path("/output_dir"));
        // conf.set("argParamValue", args[2]);
        // System.out.println("second argument value ------" + args[0]);
        // System.out.println(" in main method conf.getStrings --------" +
        // conf.get("argParamValue"));
        System.exit(job.waitForCompletion(true) ? 0 : 1);
    } else {
        System.out.println(" Hdfs Input Location deos not exists .. Unable to process the Request ....");
        System.exit(0);
    }
}

From source file:com.flytxt.yesbank.test.ModelProcessor.java

License:Open Source License

public static void main(String[] args) throws Exception {

    String modelId = args[0];//from  w w  w .j av  a  2  s  . c  om

    ModelProcessor modelProcessor = new ModelProcessor();

    modelProcessor.loadDbProperties();

    modelProcessor.initializeDataBaseConnection();

    String hfdsInputLoc = modelProcessor.getHdfsInputDirectory(modelId);

    if (hfdsInputLoc != null) {

        Configuration conf = new Configuration();
        String params = args[0];
        conf.set("test", params);

        Job job = new Job(conf);

        // Configuration conf = new Configuration();
        // Job job = Job.getInstance(conf, "word count");
        job.setJarByClass(ModelProcessor.class);
        job.setMapperClass(HdfsProcessMapper.class);
        // job.setCombinerClass(IntSumReducer.class);
        // job.setReducerClass(IntSumReducer.class);
        job.setOutputKeyClass(Text.class);
        job.setOutputValueClass(IntWritable.class);
        FileInputFormat.addInputPath(job, new Path(hfdsInputLoc));
        job.setOutputFormatClass(NullOutputFormat.class);
        // FileOutputFormat.setOutputPath(job, new Path("/output_dir"));
        // conf.set("argParamValue", args[2]);
        // System.out.println("second argument value ------" + args[0]);
        // System.out.println(" in main method conf.getStrings --------" +
        // conf.get("argParamValue"));
        System.exit(job.waitForCompletion(true) ? 0 : 1);
    } else {
        System.out.println(" Hdfs Input Location deos not exists .. Unable to process the Request ....");
        System.exit(0);
    }
}

From source file:com.frdeso.app.Sleepy.java

License:Apache License

/**
 * Performs integer summation of all the values for each key.
 *///from   ww w. java2  s.  co m

@Override
public int run(String[] args) throws Exception {
    if (args.length != 3) {
        System.err.println("Usage: wordmean <in> <out> <number second>");
        return 0;
    }

    Configuration conf = getConf();
    conf.set("mapSleepTime", args[2]);
    @SuppressWarnings("deprecation")
    Job job = new Job(conf, "joba");
    job.setJarByClass(Sleepy.class);
    job.setMapperClass(SleepyMapper.class);
    job.setCombinerClass(Reducer.class);
    job.setReducerClass(Reducer.class);
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(IntWritable.class);
    FileInputFormat.addInputPath(job, new Path(args[0]));
    Path outputpath = new Path(args[1]);
    FileOutputFormat.setOutputPath(job, outputpath);
    boolean result = job.waitForCompletion(true);

    return (result ? 0 : 1);
}

From source file:com.github.libsml.commons.util.HadoopUtils.java

License:Apache License

/**
 * Create a map-only Hadoop Job out of the passed in parameters.  Does not set the
 * Job name./*  w w w  . jav  a 2 s.co m*/
 *
 * @see #getCustomJobName(String, JobContext, Class, Class)
 */
public static Job prepareJob(Path inputPath, Path outputPath, Class<? extends InputFormat> inputFormat,
        Class<? extends Mapper> mapper, Class<? extends Writable> mapperKey,
        Class<? extends Writable> mapperValue, Class<? extends OutputFormat> outputFormat, Configuration conf)
        throws IOException {

    //    Job job = new Job(new Configuration(conf));
    Job job = Job.getInstance(conf);
    Configuration jobConf = job.getConfiguration();

    if (mapper.equals(Mapper.class)) {
        throw new IllegalStateException("Can't figure out the user class jar file from mapper/reducer");
    }
    job.setJarByClass(mapper);

    job.setInputFormatClass(inputFormat);
    jobConf.set("mapred.input.dir", inputPath.toString());

    job.setMapperClass(mapper);
    job.setMapOutputKeyClass(mapperKey);
    job.setMapOutputValueClass(mapperValue);
    job.setOutputKeyClass(mapperKey);
    job.setOutputValueClass(mapperValue);
    jobConf.setBoolean("mapred.compress.map.output", true);
    job.setNumReduceTasks(0);

    job.setOutputFormatClass(outputFormat);
    jobConf.set("mapred.output.dir", outputPath.toString());

    return job;
}

From source file:com.github.libsml.commons.util.HadoopUtils.java

License:Apache License

/**
 *
 * @param inputPaths//from   www . j  a  va 2 s .com
 * @param outputPath
 * @param inputFormat
 * @param inputKey
 * @param inputValue
 * @param mapper
 * @param mapperKey
 * @param mapperValue
 * @param combiner
 * @param reducer
 * @param outputKey
 * @param outputValue
 * @param outputFormat
 * @param conf
 * @param overwrite
 * @param isCompress
 * @return
 * @throws IOException
 */
public static Job prepareAvroJob(String inputPaths, String outputPath, Class<? extends InputFormat> inputFormat,
        Object inputKey, Object inputValue, Class<? extends Mapper> mapper, Object mapperKey,
        Object mapperValue, Class<? extends Reducer> combiner, Class<? extends Reducer> reducer,
        Object outputKey, Object outputValue, Class<? extends OutputFormat> outputFormat, Configuration conf,
        boolean overwrite, boolean isCompress) throws IOException {

    Job job = Job.getInstance(conf);
    Configuration jobConf = job.getConfiguration();
    if (inputKey instanceof Schema) {

        if (inputValue instanceof Schema) {
            inputFormat = inputFormat == null ? AvroKeyValueInputFormat.class : inputFormat;
        }
        inputFormat = inputFormat == null ? AvroKeyInputFormat.class : inputFormat;

    }
    if (inputFormat != null) {
        job.setInputFormatClass(inputFormat);
    }

    if (inputKey instanceof Schema) {
        AvroJob.setInputKeySchema(job, (Schema) inputKey);
    }

    if (inputValue instanceof Schema) {
        AvroJob.setInputValueSchema(job, (Schema) inputValue);
    }

    if (outputKey instanceof Schema) {

        if (outputValue instanceof Schema) {
            outputFormat = outputFormat == null ? AvroKeyValueOutputFormat.class : outputFormat;
        }
        outputFormat = outputFormat == null ? AvroKeyOutputFormat.class : outputFormat;

    }
    if (outputFormat != null) {
        job.setOutputFormatClass(outputFormat);
    }

    if (outputKey instanceof Schema) {
        AvroJob.setOutputKeySchema(job, (Schema) outputKey);
    } else if (outputKey instanceof Class) {
        job.setOutputKeyClass((Class) outputKey);
    }

    if (outputValue instanceof Schema) {
        AvroJob.setOutputValueSchema(job, (Schema) outputValue);
    } else if (outputValue instanceof Class) {
        job.setOutputValueClass((Class) outputValue);
    }

    if (reducer == null) {
        job.setNumReduceTasks(0);

        if (mapperKey instanceof Schema) {
            AvroJob.setMapOutputKeySchema(job, (Schema) mapperKey);
        } else if (mapperKey instanceof Class) {
            job.setOutputKeyClass((Class) mapperKey);
        }

        if (mapperValue instanceof Schema) {
            AvroJob.setOutputValueSchema(job, (Schema) mapperValue);
        } else if (mapperKey instanceof Class) {
            job.setOutputValueClass((Class) mapperValue);
        }
        job.setJarByClass(mapper);

    } else if (reducer.equals(Reducer.class)) {
        if (mapper.equals(Mapper.class)) {
            throw new IllegalStateException("Can't figure out the user class jar file from mapper/reducer");
        }
        job.setJarByClass(mapper);

    } else {
        job.setJarByClass(reducer);

    }

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

    if (isCompress) {
        FileOutputFormat.setCompressOutput(job, true);
        FileOutputFormat.setOutputCompressorClass(job, DeflateCodec.class);
    }

    job.setMapperClass(mapper);
    if (mapperKey instanceof Schema) {
        AvroJob.setMapOutputKeySchema(job, (Schema) mapperKey);
    } else if (mapperKey instanceof Class) {
        job.setMapOutputKeyClass((Class) mapperKey);
    }

    if (mapperValue instanceof Schema) {
        AvroJob.setMapOutputValueSchema(job, (Schema) mapperValue);
    } else if (mapperKey instanceof Class) {
        job.setMapOutputValueClass((Class) mapperValue);
    }

    if (reducer != null) {
        job.setReducerClass(reducer);
    }
    if (combiner != null) {
        job.setCombinerClass(combiner);
    }

    if (overwrite) {
        HadoopUtils.delete(jobConf, new Path(outputPath));
    }

    return job;

}

From source file:com.github.libsml.commons.util.HadoopUtils.java

License:Apache License

public static Job prepareAvroJob(String inputPaths, Path outputPath, Schema inputKeySchema,
        Class<? extends Mapper> mapper, Class<? extends Writable> mapperKey,
        Class<? extends Writable> mapperValue, Class<? extends Reducer> combiner,
        Class<? extends Reducer> reducer, Schema outputKeySchema, Class<? extends Writable> outputValue,
        Configuration conf, boolean overwrite) throws IOException {
    Job job = Job.getInstance(conf);
    Configuration jobConf = job.getConfiguration();

    if (reducer.equals(Reducer.class)) {
        if (mapper.equals(Mapper.class)) {
            throw new IllegalStateException("Can't figure out the user class jar file from mapper/reducer");
        }/*  www .j av a2 s. co  m*/
        job.setJarByClass(mapper);
    } else {
        job.setJarByClass(reducer);
    }

    FileInputFormat.setInputPaths(job, inputPaths);
    FileOutputFormat.setOutputPath(job, outputPath);

    FileOutputFormat.setCompressOutput(job, true);
    FileOutputFormat.setOutputCompressorClass(job, DeflateCodec.class);

    job.setInputFormatClass(AvroKeyInputFormat.class);
    AvroJob.setInputKeySchema(job, inputKeySchema);
    job.setMapperClass(mapper);
    if (mapperKey != null) {
        job.setMapOutputKeyClass(mapperKey);
    }
    if (mapperValue != null) {
        job.setMapOutputValueClass(mapperValue);
    }
    if (combiner != null) {
        job.setCombinerClass(combiner);
    }

    job.setOutputFormatClass(AvroKeyOutputFormat.class);
    job.setReducerClass(reducer);
    AvroJob.setOutputKeySchema(job, outputKeySchema);
    job.setOutputValueClass(outputValue);

    if (overwrite) {
        HadoopUtils.delete(jobConf, outputPath);
    }

    return job;

}

From source file:com.github.libsml.commons.util.HadoopUtils.java

License:Apache License

public static Job prepareAvroJob(String inputPaths, Path outputPath, Schema inputKeySchema,
        Class<? extends Mapper> mapper, Class<? extends Writable> mapperKey,
        Class<? extends Writable> mapperValue, Class<? extends Reducer> combiner,
        Class<? extends Reducer> reducer, Class<? extends Writable> outputKey,
        Class<? extends Writable> outputValue, Configuration conf, boolean overwrite) throws IOException {
    Job job = Job.getInstance(conf);
    Configuration jobConf = job.getConfiguration();

    if (reducer.equals(Reducer.class)) {
        if (mapper.equals(Mapper.class)) {
            throw new IllegalStateException("Can't figure out the user class jar file from mapper/reducer");
        }/* w ww.  j  a  va  2s.  c o  m*/
        job.setJarByClass(mapper);
    } else {
        job.setJarByClass(reducer);
    }

    FileInputFormat.setInputPaths(job, inputPaths);
    FileOutputFormat.setOutputPath(job, outputPath);

    //        FileOutputFormat.setCompressOutput(job, true);
    //        FileOutputFormat.setOutputCompressorClass(job, DeflateCodec.class);

    job.setInputFormatClass(AvroKeyInputFormat.class);
    AvroJob.setInputKeySchema(job, inputKeySchema);
    job.setMapperClass(mapper);
    if (mapperKey != null) {
        job.setMapOutputKeyClass(mapperKey);
    }
    if (mapperValue != null) {
        job.setMapOutputValueClass(mapperValue);
    }
    if (combiner != null) {
        job.setCombinerClass(combiner);
    }

    job.setReducerClass(reducer);
    job.setOutputKeyClass(outputKey);
    job.setOutputValueClass(outputValue);

    if (overwrite) {
        HadoopUtils.delete(jobConf, outputPath);
    }

    return job;

}

From source file:com.github.libsml.commons.util.HadoopUtils.java

License:Apache License

public static Job prepareJob(String inputPath, String outputPath, Class<? extends InputFormat> inputFormat,
        Class<? extends Mapper> mapper, Class<? extends Writable> mapperKey,
        Class<? extends Writable> mapperValue, Class<? extends Reducer> reducer,
        Class<? extends Writable> reducerKey, Class<? extends Writable> reducerValue,
        Class<? extends OutputFormat> outputFormat, Configuration conf) throws IOException {

    //    Job job = new Job(new Configuration(conf));
    Job job = Job.getInstance(conf);
    Configuration jobConf = job.getConfiguration();

    if (reducer.equals(Reducer.class)) {
        if (mapper.equals(Mapper.class)) {
            throw new IllegalStateException("Can't figure out the user class jar file from mapper/reducer");
        }/* ww w.  j  a va 2  s . c  o m*/
        job.setJarByClass(mapper);
    } else {
        job.setJarByClass(reducer);
    }

    job.setInputFormatClass(inputFormat);
    jobConf.set("mapred.input.dir", inputPath);

    job.setMapperClass(mapper);
    if (mapperKey != null) {
        job.setMapOutputKeyClass(mapperKey);
    }
    if (mapperValue != null) {
        job.setMapOutputValueClass(mapperValue);
    }

    jobConf.setBoolean("mapred.compress.map.output", true);

    job.setReducerClass(reducer);
    job.setOutputKeyClass(reducerKey);
    job.setOutputValueClass(reducerValue);

    job.setOutputFormatClass(outputFormat);
    jobConf.set("mapred.output.dir", outputPath);

    return job;
}

From source file:com.github.milind.GlobalNumberAddition.java

public static void main(String[] args) throws Exception {
    Configuration conf = new Configuration();
    Job job = Job.getInstance(conf, "Global Addition of Numbers");
    job.setJarByClass(GlobalNumberAddition.class);
    job.setMapperClass(GlobalNumberAdditionMapper.class);
    job.setNumReduceTasks(0);// ww  w.j  ava2  s.c  o  m
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(IntWritable.class);
    FileInputFormat.addInputPath(job, new Path(args[0]));
    FileOutputFormat.setOutputPath(job, new Path(args[1]));
    System.exit(job.waitForCompletion(true) ? 0 : 1);
}

From source file:com.github.milind.GlobalNumberAverage.java

public static void main(String[] args) throws Exception {
    Configuration conf = new Configuration();
    Job job = Job.getInstance(conf, "Global Average of Numbers");
    job.setJarByClass(GlobalNumberAverage.class);
    job.setMapperClass(GlobalNumberAverageMapper.class);
    job.setNumReduceTasks(0);/*w w  w .j  a  v  a2  s. com*/
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(DoubleWritable.class);
    FileInputFormat.addInputPath(job, new Path(args[0]));
    FileOutputFormat.setOutputPath(job, new Path(args[1]));
    System.exit(job.waitForCompletion(true) ? 0 : 1);
}