Example usage for org.apache.hadoop.mapred JobConf setOutputKeyClass

Introduction

In this page you can find the example usage for org.apache.hadoop.mapred JobConf setOutputKeyClass.

Prototype

public void setOutputKeyClass(Class<?> theClass) 

Source Link

Document

Set the key class for the job output data.

Usage

From source file:IndexWords.java

License:Apache License

public int run(String[] args) throws Exception {
    if (args.length < 2) {
        return -1;
    }/*from www.j a  v  a2  s .  c o  m*/

    checkWords = new String[args.length - 2];

    int numIter = 5;

    Path input = new Path(args[0]);

    for (int i = 0; i < numIter; i++) {
        JobConf conf = new JobConf(getConf(), IndexWords.class);
        conf.setJobName("indexwords");

        conf.setInputFormat(KeyValueTextInputFormat.class);
        conf.setOutputFormat(TextOutputFormat.class);

        conf.setOutputKeyClass(Text.class);
        conf.setOutputValueClass(Text.class);

        conf.setMapperClass(MapClass.class);
        conf.setReducerClass(Reduce.class);

        FileInputFormat.setInputPaths(conf, input);
        FileOutputFormat.setOutputPath(conf, new Path(args[1] + Integer.toString(i)));

        RunningJob rj = JobClient.runJob(conf);
        input = new Path(args[1] + Integer.toString(i));
        double resVal = rj.getCounters().getCounter(RecordCounters.RESIDUAL_COUNTER) * 1.0 / 10000;
        System.out.println(N + " " + (resVal / (1.0 * N)));
        if (resVal / (1.0 * N) < 0.001)
            break;
    }

    return 0;
}

---

From source file:ClimateData.java

License:Open Source License

public static void main(String[] args) throws Exception {
    JobConf conf = new JobConf(ClimateData.class);
    conf.setJobName("climatedata");

    conf.setOutputKeyClass(Text.class);
    conf.setOutputValueClass(IntWritable.class);

    conf.setMapperClass(Map.class);
    conf.setCombinerClass(Reduce.class);
    conf.setReducerClass(Reduce.class);

    conf.setInputFormat(TextInputFormat.class);
    conf.setOutputFormat(TextOutputFormat.class);

    FileInputFormat.setInputPaths(conf, new Path(args[0]));
    FileOutputFormat.setOutputPath(conf, new Path(args[1]));

    JobClient.runJob(conf);// ww w  . j av a2 s .  com
}

---

From source file:FormatStorage2ColumnStorageMR.java

License:Open Source License

@SuppressWarnings("deprecation")
public static void main(String[] args) throws Exception {

    if (args.length != 2) {
        System.out.println("FormatStorage2ColumnStorageMR <input> <output>");
        System.exit(-1);/*from  ww w.  j a  va  2 s . c  om*/
    }

    JobConf conf = new JobConf(FormatStorageMR.class);

    conf.setJobName("FormatStorage2ColumnStorageMR");

    conf.setNumMapTasks(1);
    conf.setNumReduceTasks(4);

    conf.setOutputKeyClass(LongWritable.class);
    conf.setOutputValueClass(Unit.Record.class);

    conf.setMapperClass(FormatStorageMapper.class);
    conf.setReducerClass(ColumnStorageReducer.class);

    conf.setInputFormat(FormatStorageInputFormat.class);
    conf.set("mapred.output.compress", "flase");

    Head head = new Head();
    initHead(head);

    head.toJobConf(conf);

    FileInputFormat.setInputPaths(conf, args[0]);
    Path outputPath = new Path(args[1]);
    FileOutputFormat.setOutputPath(conf, outputPath);

    FileSystem fs = outputPath.getFileSystem(conf);
    fs.delete(outputPath, true);

    JobClient jc = new JobClient(conf);
    RunningJob rj = null;
    rj = jc.submitJob(conf);

    String lastReport = "";
    SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss,SSS");
    long reportTime = System.currentTimeMillis();
    long maxReportInterval = 3 * 1000;
    while (!rj.isComplete()) {
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
        }

        int mapProgress = Math.round(rj.mapProgress() * 100);
        int reduceProgress = Math.round(rj.reduceProgress() * 100);

        String report = " map = " + mapProgress + "%,  reduce = " + reduceProgress + "%";

        if (!report.equals(lastReport) || System.currentTimeMillis() >= reportTime + maxReportInterval) {

            String output = dateFormat.format(Calendar.getInstance().getTime()) + report;
            System.out.println(output);
            lastReport = report;
            reportTime = System.currentTimeMillis();
        }
    }

    System.exit(0);

}

---

From source file:TestColumnStorageInputFormat.java

License:Open Source License

public static void main(String[] argv) throws IOException, SerDeException {
    try {//from ww w.  j av  a 2  s.  c  om
        if (argv.length != 2) {
            System.out.println("TestColumnStorageInputFormat <input> idx");
            System.exit(-1);
        }

        JobConf conf = new JobConf(TestColumnStorageInputFormat.class);

        conf.setJobName("TestColumnStorageInputFormat");

        conf.setNumMapTasks(1);
        conf.setNumReduceTasks(1);

        conf.setOutputKeyClass(LongWritable.class);
        conf.setOutputValueClass(Unit.Record.class);

        conf.setInputFormat(TextInputFormat.class);
        conf.set("mapred.output.compress", "flase");

        conf.set("mapred.input.dir", argv[0]);

        conf.set("hive.io.file.readcolumn.ids", argv[1]);

        FormatStorageSerDe serDe = initSerDe(conf);
        StandardStructObjectInspector oi = (StandardStructObjectInspector) serDe.getObjectInspector();
        List<? extends StructField> fieldRefs = oi.getAllStructFieldRefs();

        FileInputFormat.setInputPaths(conf, argv[0]);
        Path outputPath = new Path(argv[1]);
        FileOutputFormat.setOutputPath(conf, outputPath);

        InputFormat inputFormat = new ColumnStorageInputFormat();
        long begin = System.currentTimeMillis();
        InputSplit[] inputSplits = inputFormat.getSplits(conf, 1);
        long end = System.currentTimeMillis();
        System.out.println("getsplit delay " + (end - begin) + " ms");

        if (inputSplits.length == 0) {
            System.out.println("inputSplits is empty");
            return;
        } else {
            System.out.println("get Splits:" + inputSplits.length);
        }

        int size = inputSplits.length;
        System.out.println("getSplits return size:" + size);
        for (int i = 0; i < size; i++) {
            ColumnStorageSplit split = (ColumnStorageSplit) inputSplits[i];
            System.out.printf("split:" + i + " offset:" + split.getStart() + "len:" + split.getLength()
                    + "path:" + split.getPath().toString() + "beginLine:" + split.getBeginLine() + "endLine:"
                    + split.getEndLine());
            if (split.getFileName() != null) {
                System.out.println("fileName:" + split.getFileName());
            } else {
                System.out.println("fileName null");
            }
            if (split.fileList() != null) {
                System.out.println("fileList.num:" + split.fileList().size());
                for (int j = 0; j < split.fileList().size(); j++) {
                    System.out.println("filelist " + j + ":" + split.fileList().get(j));
                }
            }
        }

        while (true) {
            int totalDelay = 0;
            RecordReader<WritableComparable, Writable> currRecReader = null;
            for (int i = 0; i < inputSplits.length; i++) {
                currRecReader = inputFormat.getRecordReader(inputSplits[i], conf, Reporter.NULL);

                WritableComparable key;
                Writable value;

                key = currRecReader.createKey();
                value = currRecReader.createValue();

                begin = System.currentTimeMillis();
                int count = 0;
                while (currRecReader.next(key, value)) {

                    Record record = (Record) value;

                    Object row = serDe.deserialize(record);
                    count++;

                }
                end = System.currentTimeMillis();

                long delay = (end - begin) / 1000;
                totalDelay += delay;
                System.out.println(count + " record read over, delay " + delay + " s");
            }

            System.out.println("total delay:" + totalDelay + "\n");
        }

    } catch (Exception e) {
        e.printStackTrace();
        System.out.println("get exception:" + e.getMessage());
    }
}

---

From source file:BP.java

License:Apache License

protected JobConf configInitMessage() throws Exception {
    final JobConf conf = new JobConf(getConf(), BP.class);
    conf.set("nstate", "" + nstate);
    conf.set("compat_matrix_str", "" + edge_potential_str);
    conf.setJobName("BP_Init_Belief");

    conf.setMapperClass(MapInitializeBelief.class);

    fs.delete(message_cur_path, true);/*from  ww w  .ja  va2s  .c  o m*/

    FileInputFormat.setInputPaths(conf, edge_path);
    FileOutputFormat.setOutputPath(conf, message_cur_path);

    conf.setNumReduceTasks(0);

    conf.setOutputKeyClass(Text.class);
    conf.setOutputValueClass(Text.class);
    return conf;
}

---

From source file:BP.java

License:Apache License

protected JobConf configUpdateMessage() throws Exception {
    final JobConf conf = new JobConf(getConf(), BP.class);
    conf.set("nstate", "" + nstate);
    conf.set("compat_matrix_str", "" + edge_potential_str);
    conf.setJobName("BP_Update_message");

    conf.setMapperClass(MapUpdateMessage.class);
    conf.setReducerClass(RedUpdateMessage.class);

    fs.delete(message_next_path, true);/*from   w w w.  j a v a  2  s.  c o m*/

    FileInputFormat.setInputPaths(conf, message_cur_path, prior_path);
    FileOutputFormat.setOutputPath(conf, message_next_path);

    conf.setNumReduceTasks(nreducer);

    conf.setOutputKeyClass(LongWritable.class);
    conf.setOutputValueClass(Text.class);

    return conf;
}

---

From source file:BP.java

License:Apache License

protected JobConf configCheckErr() throws Exception {
    final JobConf conf = new JobConf(getConf(), BP.class);
    conf.set("nstate", "" + nstate);
    conf.setJobName("BP_Check Err");

    fs.delete(check_error_path, true);//w  w  w .j ava2s.  c o  m

    conf.setMapperClass(MapCheckErr.class);
    conf.setReducerClass(RedCheckErr.class);

    FileInputFormat.setInputPaths(conf, message_cur_path, message_next_path);
    FileOutputFormat.setOutputPath(conf, check_error_path);

    conf.setNumReduceTasks(nreducer);

    conf.setOutputKeyClass(LongWritable.class);
    conf.setOutputValueClass(Text.class);

    return conf;
}

---

From source file:BP.java

License:Apache License

protected JobConf configSumErr() throws Exception {
    final JobConf conf = new JobConf(getConf(), BP.class);
    conf.set("nstate", "" + nstate);
    conf.setJobName("BP_Sum Err");

    fs.delete(sum_error_path, true);/*from  ww w  .  ja va2 s .  c  o  m*/

    conf.setMapperClass(MapSumErr.class);
    conf.setReducerClass(RedSumErr.class);

    FileInputFormat.setInputPaths(conf, check_error_path);
    FileOutputFormat.setOutputPath(conf, sum_error_path);

    conf.setNumReduceTasks(1);

    conf.setOutputKeyClass(LongWritable.class);
    conf.setOutputValueClass(Text.class);

    return conf;
}

---

From source file:BP.java

License:Apache License

protected JobConf configComputeBelief() throws Exception {
    final JobConf conf = new JobConf(getConf(), BP.class);
    conf.set("nstate", "" + nstate);
    conf.set("compat_matrix_str", "" + edge_potential_str);
    conf.setJobName("BP_Compute_Belief");

    conf.setMapperClass(MapComputeBelief.class);
    conf.setReducerClass(RedComputeBelief.class);

    fs.delete(output_path, true);/*from   w  w  w.  ja va2 s  . c o  m*/

    FileInputFormat.setInputPaths(conf, message_cur_path, prior_path);
    FileOutputFormat.setOutputPath(conf, output_path);

    conf.setNumReduceTasks(nreducer);

    conf.setOutputKeyClass(LongWritable.class);
    conf.setOutputValueClass(Text.class);

    return conf;
}

---

From source file:FriendsJob.java

License:Apache License

/**
 * @param args/*from   www .j a va 2  s.c o  m*/
 */
public static void main(String[] args) throws Exception {
    JobConf conf = new JobConf(FriendsJob.class);
    conf.setJobName("anagramcount");

    conf.setOutputKeyClass(Text.class);
    conf.setOutputValueClass(Text.class);

    conf.setMapperClass(FriendsMapper.class);
    // conf.setCombinerClass(AnagramReducer.class);
    conf.setReducerClass(FriendsReducer.class);

    conf.setInputFormat(TextInputFormat.class);
    conf.setOutputFormat(TextOutputFormat.class);

    FileInputFormat.setInputPaths(conf, new Path(args[0]));
    FileOutputFormat.setOutputPath(conf, new Path(args[1]));

    JobClient.runJob(conf);

}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• 22
• 23
• 24
• 25
• 26
• 27
• 28
• 29
• 30
• 31
• 32
• 33
• 34
• 35
• 36
• 37
• 38
• 39
• 40
• 41
• 42
• 43
• 44
• 45
• 46
• 47
• 48
• 49
• 50
• »