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

Introduction

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

Prototype

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

Source Link

Document

Set the value class for the map output data.

Usage

From source file:com.littlehotspot.hadoop.mr.mobile.MobileLog.java

License:Open Source License

@Override
public int run(String[] arg) throws Exception {
    try {/*from   w  w w  .  j av a  2 s  .co  m*/
        Job job = Job.getInstance(this.getConf(), MobileLog.class.getSimpleName());
        job.setJarByClass(MobileLog.class);

        /***/
        Path inputPath = new Path(arg[0]);
        FileInputFormat.addInputPath(job, inputPath);
        job.setMapperClass(MobileMapper.class);
        job.setMapOutputKeyClass(Text.class);
        job.setMapOutputValueClass(Text.class);

        /***/
        Path outputPath = new Path(arg[1]);
        FileSystem fileSystem = FileSystem.get(new URI(outputPath.toString()), new Configuration());
        if (fileSystem.exists(outputPath)) {
            fileSystem.delete(outputPath, true);
        }
        FileOutputFormat.setOutputPath(job, outputPath);
        job.setReducerClass(MobileReduce.class);
        job.setOutputKeyClass(Text.class);
        job.setOutputValueClass(Text.class);

        boolean status = job.waitForCompletion(true);
        if (!status) {
            throw new Exception("MapReduce task execute failed.........");
        }
        return 0;
    } catch (Exception e) {
        e.printStackTrace();
        return 1;
    }
}

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From source file:com.littlehotspot.hadoop.mr.nginx.module.cdf.CDFScheduler.java

License:Open Source License

@Override
public int run(String[] args) throws Exception {
    try {/*from   w  w  w.ja  v  a2 s  . co  m*/
        CommonVariables.initMapReduce(this.getConf(), args);// ? MAP REDUCE

        String matcherRegex = CommonVariables.getParameterValue(Argument.MapperInputFormatRegex);
        String hdfsInputPath = CommonVariables.getParameterValue(Argument.InputPath);
        String hdfsOutputPath = CommonVariables.getParameterValue(Argument.OutputPath);

        // ???
        if (StringUtils.isNotBlank(matcherRegex)) {
            CommonVariables.MAPPER_INPUT_FORMAT_REGEX = Pattern.compile(matcherRegex);
        }

        Path inputPath = new Path(hdfsInputPath);
        Path outputPath = new Path(hdfsOutputPath);

        Job job = Job.getInstance(this.getConf(), this.getClass().getName());
        job.setJarByClass(this.getClass());

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

        job.setMapperClass(CDFMapper.class);
        job.setMapOutputKeyClass(Text.class);
        job.setMapOutputValueClass(Text.class);

        job.setReducerClass(GeneralReducer.class);
        job.setOutputKeyClass(Text.class);
        job.setOutputValueClass(Text.class);

        FileSystem fileSystem = FileSystem.get(new URI(outputPath.toString()), this.getConf());
        if (fileSystem.exists(outputPath)) {
            fileSystem.delete(outputPath, true);
        }

        boolean status = job.waitForCompletion(true);
        if (!status) {
            throw new Exception("MapReduce task execute failed.........");
        }
        return 0;
    } catch (Exception e) {
        e.printStackTrace();
        return 1;
    }
}

---

From source file:com.littlehotspot.hadoop.mr.nginx.module.hdfs2hbase.api.user.UserScheduler.java

License:Open Source License

@Override
public int run(String[] args) throws Exception {
    try {//w  ww. ja v  a2s  .co  m
        CommonVariables.initMapReduce(this.getConf(), args);// ? MAP REDUCE
        CommonVariables.hBaseHelper = new HBaseHelper(this.getConf());

        // ??
        String matcherRegex = CommonVariables.getParameterValue(Argument.MapperInputFormatRegex);
        String hdfsInputPath = CommonVariables.getParameterValue(Argument.InputPath);
        String hdfsOutputPath = CommonVariables.getParameterValue(Argument.OutputPath);

        // ???
        if (StringUtils.isNotBlank(matcherRegex)) {
            CommonVariables.MAPPER_INPUT_FORMAT_REGEX = Pattern.compile(matcherRegex);
        }

        Path inputPath = new Path(hdfsInputPath);
        Path outputPath = new Path(hdfsOutputPath);

        Job job = Job.getInstance(this.getConf(), this.getClass().getName());
        job.setJarByClass(this.getClass());

        job.setMapperClass(UserMapper.class);
        job.setMapOutputKeyClass(Text.class);
        job.setMapOutputValueClass(Text.class);

        job.setReducerClass(UserReducer.class);
        job.setOutputKeyClass(Text.class);
        job.setOutputValueClass(Text.class);

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

        FileSystem fileSystem = FileSystem.get(new URI(outputPath.toString()), this.getConf());
        if (fileSystem.exists(outputPath)) {
            fileSystem.delete(outputPath, true);
        }

        // 
        boolean state = job.waitForCompletion(true);
        if (!state) {
            throw new Exception("MapReduce task execute failed.........");
        }

        return 0;
    } catch (Exception e) {
        e.printStackTrace();
        return 1;
    }
}

---

From source file:com.mapr.db.utils.ImportCSV_MR.java

License:Apache License

@Override
public int run(String[] args) throws Exception {

    if (args.length != 4) {
        System.out.println("MapR-DB JSON Tables - Import CSV" + "\nUsage:\n"
                + "\tParam 1: JSON Table Path (MapR-FS)\n" + "\tParam 2: Text File Path (Local-FS)\n"
                + "\tParam 3: Text File Delimiter (Local-FS)\n" + "\tParam 4: Schema File Path (Local-FS)\n");

        System.exit(-1);/*  w  w w  . ja v a2 s  .  c  o  m*/
    }

    outputTable = args[0].toString().trim();
    inputDir = args[1].toString().trim();
    delimiter = args[2].toString().trim();
    schemaFile = args[3].toString().trim();

    BasicConfigurator.configure();
    Logger.getRootLogger().setLevel(Level.ERROR);

    ImportCSV_MR imp = new ImportCSV_MR();

    imp.readSchema(schemaFile);
    imp.printSchema();

    Job job = Job.getInstance(conf, "ImportCSV_MR");
    job.setJarByClass(ImportCSV_MR.class);

    job.setMapperClass(MyMapper.class);

    conf = job.getConfiguration();
    conf.setStrings("io.serializations",
            new String[] { conf.get("io.serializations"), JSONDocumentSerialization.class.getName() });

    conf.set("countColumnsInSchema", String.valueOf(countColumnsInSchema));

    conf.set("delimiter", delimiter);

    conf.set("tablePath", outputTable);

    String valueTypes[] = valueTypesInSchema.toArray(new String[valueTypesInSchema.size()]);
    conf.setStrings("valueTypesInSchema", valueTypes);

    String columnNames[] = columnNamesInSchema.toArray(new String[columnNamesInSchema.size()]);
    conf.setStrings("columnNamesInSchema", columnNames);

    //Deciding the appropriate Input format class along with their input path
    FileInputFormat.addInputPath(job, new Path(inputDir));
    job.setInputFormatClass(TextInputFormat.class);

    //Mapper output record key and value class
    job.setMapOutputKeyClass(ByteBufWritableComparable.class);
    job.setMapOutputValueClass(DBDocumentImpl.class);

    //Deciding the appropriate Output format class along with their input path
    conf.set("maprdb.mapred.outputtable", outputTable);
    job.setOutputFormatClass(TableOutputFormat.class);

    //Reducer output record key and value class
    job.setNumReduceTasks(0);

    boolean isJobSuccessful = job.waitForCompletion(true);
    System.exit(job.waitForCompletion(true) ? 0 : 1);
    return 0;
}

---

From source file:com.marklogic.hadoop.csvtoxml.CsvToXML.java

License:Apache License

public static void main(String[] args) throws Exception {
    Configuration conf = new Configuration();
    String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();

    @SuppressWarnings("deprecation")
    Job job = new Job(conf);
    job.setJobName("ProcessCSVtoXML_job");
    System.out.println("After the JobName Updates");
    job.setJarByClass(CsvToXML.class);
    job.setInputFormatClass(TextInputFormat.class);
    job.setMapperClass(ContentMapper.class);
    job.setMapOutputKeyClass(DocumentURI.class);
    job.setMapOutputValueClass(Text.class);
    job.setOutputFormatClass(ContentOutputFormat.class);
    System.out.println("Made it past external jar dependencies nodes");

    FileInputFormat.setInputPaths(job, new Path(otherArgs[1]));

    conf = job.getConfiguration();/*  w ww  . jav  a2 s.c  o m*/
    conf.addResource(otherArgs[0]);
    System.out.println("After the conf.set");

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

---

From source file:com.marklogic.mapreduce.examples.BinaryReader.java

License:Apache License

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

    if (args.length < 2) {
        System.err.println("Usage: BinaryReader configFile outputDir");
        System.exit(2);//from w ww  .java  2s  .c om
    }
    String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();
    Job job = Job.getInstance(conf, "binary reader");
    job.setJarByClass(BinaryReader.class);
    job.setInputFormatClass(DocumentInputFormat.class);
    job.setMapperClass(DocMapper.class);
    job.setMapOutputKeyClass(DocumentURI.class);
    job.setMapOutputValueClass(BytesWritable.class);
    job.setOutputFormatClass(BinaryOutputFormat.class);
    job.setOutputKeyClass(DocumentURI.class);
    job.setOutputValueClass(BytesWritable.class);
    FileOutputFormat.setOutputPath(job, new Path(otherArgs[1]));

    conf = job.getConfiguration();
    conf.addResource(otherArgs[0]);

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

---

From source file:com.marklogic.mapreduce.examples.ContentLoader.java

License:Apache License

public static void main(String[] args) throws Exception {
    Configuration conf = new Configuration();
    if (args.length < 2) {
        System.err.println("Usage: ContentLoader configFile inputDir");
        System.exit(2);//w ww.  ja  v a  2 s  .  c o  m
    }
    String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();

    Job job = Job.getInstance(conf, "content loader");
    job.setJarByClass(ContentLoader.class);
    job.setInputFormatClass(ContentInputFormat.class);
    job.setMapperClass(ContentMapper.class);
    job.setMapOutputKeyClass(DocumentURI.class);
    job.setMapOutputValueClass(Text.class);
    job.setOutputFormatClass(ContentOutputFormat.class);

    ContentInputFormat.setInputPaths(job, new Path(otherArgs[1]));

    conf = job.getConfiguration();
    conf.addResource(otherArgs[0]);

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

---

From source file:com.marklogic.mapreduce.examples.ContentReader.java

License:Apache License

public static void main(String[] args) throws Exception {
    Configuration conf = new Configuration();
    if (args.length < 2) {
        System.err.println("Usage: ContentReader configFile outputDir");
        System.exit(2);//from w w  w  .  j av  a2 s  . c  om
    }
    String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();

    Job job = Job.getInstance(conf, "content reader");
    job.setJarByClass(ContentReader.class);
    job.setInputFormatClass(DocumentInputFormat.class);
    job.setMapperClass(DocMapper.class);
    job.setMapOutputKeyClass(DocumentURI.class);
    job.setMapOutputValueClass(DatabaseDocument.class);
    job.setOutputFormatClass(CustomOutputFormat.class);

    CustomOutputFormat.setOutputPath(job, new Path(otherArgs[1]));

    conf = job.getConfiguration();
    conf.addResource(otherArgs[0]);
    conf.setClass(MarkLogicConstants.INPUT_SSL_OPTIONS_CLASS, SslOptions.class, SslConfigOptions.class);

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

---

From source file:com.marklogic.mapreduce.examples.HelloWorld.java

License:Apache License

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

    String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();
    Job job = Job.getInstance(conf, "hello world");
    job.setJarByClass(HelloWorld.class);

    // Map related configuration
    job.setInputFormatClass(DocumentInputFormat.class);
    job.setMapperClass(MyMapper.class);
    job.setMapOutputKeyClass(IntWritable.class);
    job.setMapOutputValueClass(Text.class);

    // Reduce related configuration
    job.setReducerClass(MyReducer.class);
    job.setOutputFormatClass(ContentOutputFormat.class);
    job.setOutputKeyClass(DocumentURI.class);
    job.setOutputValueClass(Text.class);

    conf = job.getConfiguration();/*  w w  w .  j a va 2s.com*/
    conf.addResource("marklogic-hello-world.xml");

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

---

From source file:com.marklogic.mapreduce.examples.LinkCount.java

License:Apache License

public static void main(String[] args) throws Exception {
    Configuration conf = new Configuration();
    if (args.length < 2) {
        System.err.println("Usage: LinkCount configFile outputDir");
        System.exit(2);/*from w  w  w .  j  a v  a2 s  .  co m*/
    }
    String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();

    Job job = Job.getInstance(conf, "link count");
    job.setJarByClass(LinkCount.class);
    job.setInputFormatClass(ValueInputFormat.class);
    job.setMapperClass(RefMapper.class);
    job.setMapOutputKeyClass(Text.class);
    job.setMapOutputValueClass(IntWritable.class);
    job.setCombinerClass(IntSumReducer.class);
    job.setReducerClass(IntSumReducer.class);
    job.setOutputFormatClass(TextOutputFormat.class);
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(IntWritable.class);
    FileOutputFormat.setOutputPath(job, new Path(otherArgs[1]));

    conf = job.getConfiguration();
    conf.addResource(otherArgs[0]);
    conf.setClass(MarkLogicConstants.INPUT_VALUE_CLASS, Text.class, Writable.class);

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

---

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