Example usage for org.apache.hadoop.mapred FileInputFormat setInputPaths

Introduction

In this page you can find the example usage for org.apache.hadoop.mapred FileInputFormat setInputPaths.

Prototype

public static void setInputPaths(JobConf conf, Path... inputPaths) 

Source Link

Document

Set the array of Path s as the list of inputs for the map-reduce job.

Usage

From source file:Text2FormatStorageMR.java

License:Open Source License

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

    if (args.length != 2) {
        System.out.println("FormatFileMR <input> <output>");
        System.exit(-1);/*  w w  w .jav a 2  s.c o  m*/
    }

    JobConf conf = new JobConf(FormatStorageMR.class);

    conf.setJobName("Text2FormatMR");

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

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

    conf.setMapperClass(TextFileTestMapper.class);
    conf.setReducerClass(FormatFileTestReducer.class);

    conf.setInputFormat(TextInputFormat.class);
    conf.setOutputFormat(FormatStorageOutputFormat.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:TestFormatStorageInputFormat.java

License:Open Source License

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

        JobConf conf = new JobConf(TestFormatStorageInputFormat.class);

        conf.setJobName("TestFormatStorageInputFormat");

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

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

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

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

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

        head.toJobConf(conf);

        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 FormatStorageInputFormat();
        InputSplit[] inputSplits = inputFormat.getSplits(conf, 1);
        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++) {
            FormatStorageSplit split = (FormatStorageSplit) inputSplits[i];
            System.out.printf("split:" + i + "offset:" + split.getStart() + "len:" + split.getLength() + "path:"
                    + conf.get(ConstVar.InputPath) + "beginLine:" + split.getBeginLine() + "endLine:"
                    + split.getEndLine() + "\n");
        }

        {
            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();

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

                    Object row = serDe.deserialize(record);
                    count++;
                }
                long 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);
        }
    } catch (Exception e) {
        e.printStackTrace();
        System.out.println("get exception:" + e.getMessage());
    }
}

---

From source file:BMTColumnLoader.java

License:Apache License

public int run(String[] args) {
    JobConf conf = new JobConf(getConf(), BMTColumnLoader.class);
    GenericOptionsParser parser = new GenericOptionsParser(conf, args);

    conf.setJobName("BMTColumnLoader");
    conf.setMapperClass(Map.class);
    conf.setNumReduceTasks(0);//from   ww w  .  j a v a 2 s.c  o m
    conf.setOutputKeyClass(Text.class);
    conf.setOutputValueClass(Text.class);

    List<String> other_args = new ArrayList<String>();
    for (int i = 0; i < args.length; ++i) {
        other_args.add(args[i]);
    }

    FileInputFormat.setInputPaths(conf, new Path(other_args.get(0)));
    FileOutputFormat.setOutputPath(conf, new Path(other_args.get(1)));
    try {
        JobClient.runJob(conf);
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
    return 0;
}

---

From source file:Text2ColumntStorageMR.java

License:Open Source License

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

    if (args.length != 3) {
        System.out.println("Text2ColumnStorageMR <input> <output> <columnStorageMode>");
        System.exit(-1);//  w w w.  j av a 2 s  .  c o  m
    }

    JobConf conf = new JobConf(Text2ColumntStorageMR.class);

    conf.setJobName("Text2ColumnStorageMR");

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

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

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

    conf.setInputFormat(TextInputFormat.class);
    conf.setOutputFormat((Class<? extends OutputFormat>) ColumnStorageHiveOutputFormat.class);
    conf.set("mapred.output.compress", "flase");

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

    head.toJobConf(conf);

    int bt = Integer.valueOf(args[2]);

    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:TestTextInputFormat.java

License:Open Source License

public static void main(String[] argv) throws IOException, SerDeException {
    try {/*from ww w.jav  a2  s  .co  m*/
        if (argv.length != 2) {
            System.out.println("TestTextInputFormat <input> <output>");
            System.exit(-1);
        }

        JobConf conf = new JobConf(TestTextInputFormat.class);

        conf.setJobName("TestTextInputFormat");

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

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

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

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

        LazySimpleSerDe serDe = initSerDe(conf);
        LazySimpleStructObjectInspector oi = (LazySimpleStructObjectInspector) 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 TextInputFormat();
        ((TextInputFormat) inputFormat).configure(conf);
        InputSplit[] inputSplits = inputFormat.getSplits(conf, 1);
        if (inputSplits.length == 0) {
            System.out.println("inputSplits is empty");
            return;
        } else {
            System.out.println("get Splits:" + inputSplits.length);
        }

        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();

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

                Object row = serDe.deserialize((Text) value);
                oi.getStructFieldsDataAsList(row);

                count++;
            }
            long 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);

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

---

From source file:MapReduceRunner.java

License:Apache License

public static void main(String[] args) throws IOException {
    JobConf conf = new JobConf(MapReduceRunner.class);
    conf.setJobName("gapdeduce");

    conf.setMapOutputKeyClass(Text.class);
    conf.setMapOutputValueClass(Text.class);

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

    conf.setMapperClass(Mapper.class);
    conf.setReducerClass(Reducer.class);

    // KeyValueTextInputFormat treats each line as an input record, 
    // and splits the line by the tab character to separate it into key and value 
    conf.setInputFormat(KeyValueTextInputFormat.class);
    conf.setOutputFormat(TextOutputFormat.class);

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

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

---

From source file:LinkReverser.java

License:Apache License

/**
 * The main driver for word count map/reduce program.
 * Invoke this method to submit the map/reduce job.
 * @throws IOException When there is communication problems with the 
 *                     job tracker.// w  ww .  j a  v a  2  s  .c om
 */
public int run(String[] args) throws Exception {
    JobConf conf = new JobConf(getConf(), LinkReverser.class);
    conf.setJobName("indexreverser");

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

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

    List<String> other_args = new ArrayList<String>();
    for (int i = 0; i < args.length; ++i) {
        try {
            if ("-m".equals(args[i])) {
                conf.setNumMapTasks(Integer.parseInt(args[++i]));
            } else if ("-r".equals(args[i])) {
                conf.setNumReduceTasks(Integer.parseInt(args[++i]));
            } else {
                other_args.add(args[i]);
            }
        } catch (NumberFormatException except) {
            System.out.println("ERROR: Integer expected instead of " + args[i]);
            return printUsage();
        } catch (ArrayIndexOutOfBoundsException except) {
            System.out.println("ERROR: Required parameter missing from " + args[i - 1]);
            return printUsage();
        }
    }
    // Make sure there are exactly 2 parameters left.
    if (other_args.size() != 2) {
        System.out.println("ERROR: Wrong number of parameters: " + other_args.size() + " instead of 2.");
        return printUsage();
    }
    FileInputFormat.setInputPaths(conf, other_args.get(0));
    FileOutputFormat.setOutputPath(conf, new Path(other_args.get(1)));

    JobClient.runJob(conf);
    return 0;
}

---

From source file:update_sentiment.java

License:LGPL

public static void runjob(String input, String output) throws Exception {
    JobConf conf = new JobConf(update_sentiment.class);
    conf.setJobName("Update_Sentiment_Train");

    conf.setOutputKeyClass(Text.class);
    conf.setOutputValueClass(Text.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(input));
    FileOutputFormat.setOutputPath(conf, new Path(output));

    JobClient.runJob(conf);/*from  w  w  w  .j ava2 s .  com*/
}

---

From source file:BMTTableLoader.java

License:Apache License

public int run(String[] args) {
    JobConf conf = new JobConf(getConf(), BMTTableLoader.class);
    GenericOptionsParser parser = new GenericOptionsParser(conf, args);

    conf.setJobName("BMTTableLoader");
    conf.setMapperClass(Map.class);
    conf.setNumReduceTasks(0);//from w w  w  .java 2 s .co  m
    conf.setOutputKeyClass(Text.class);
    conf.setOutputValueClass(Text.class);

    List<String> other_args = new ArrayList<String>();
    for (int i = 0; i < args.length; ++i) {
        other_args.add(args[i]);
    }

    FileInputFormat.setInputPaths(conf, new Path(other_args.get(0)));
    FileOutputFormat.setOutputPath(conf, new Path(other_args.get(1)));
    try {
        JobClient.runJob(conf);
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
    return 0;
}

---

From source file:BMTKeyValueLoader.java

License:Apache License

public int run(String[] args) {
    JobConf conf = new JobConf(getConf(), CassandraTableLoader.class);
    GenericOptionsParser parser = new GenericOptionsParser(conf, args);

    conf.setInputFormat(KeyValueTextInputFormat.class);
    conf.setJobName("BMTKeyValueLoader");
    conf.setMapperClass(Map.class);
    conf.setReducerClass(Reduce.class);
    conf.setOutputKeyClass(Text.class);
    conf.setOutputValueClass(Text.class);

    List<String> other_args = new ArrayList<String>();
    for (int i = 0; i < args.length; ++i) {
        other_args.add(args[i]);/* w  ww  .  j  a  v  a2 s. co m*/
    }

    FileInputFormat.setInputPaths(conf, new Path(other_args.get(0)));
    FileOutputFormat.setOutputPath(conf, new Path(other_args.get(1)));
    try {
        JobClient.runJob(conf);
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
    return 0;
}

---

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