Examples of org.apache.hadoop.mapred.MROutputFiles

org.apache.hadoop.mapred.MROutputFiles
Manipulate the working area for the transient store for maps and reduces. This class is used by map and reduce tasks to identify the directories that they need to write to/read from for intermediate files. The callers of these methods are from the Child running the Task.

    
    LocalDirAllocator lda = new LocalDirAllocator(MRConfig.LOCAL_DIR);
    
    MergeManagerImpl<Text, Text> mergeManager = new MergeManagerImpl<Text, Text>(
        reduceId, jobConf, fs, lda, Reporter.NULL, null, null, null, null, null,
        null, null, new Progress(), new MROutputFiles());
    
    // write map outputs
    Map<String, String> map1 = new TreeMap<String, String>();
    map1.put("apple", "disgusting");
    map1.put("carrot", "delicious");

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    InterruptedException {
    JobConf jobConf = new JobConf();
    final int SORT_FACTOR = 5;
    jobConf.setInt(MRJobConfig.IO_SORT_FACTOR, SORT_FACTOR);


    MapOutputFile mapOutputFile = new MROutputFiles();
    FileSystem fs = FileSystem.getLocal(jobConf);
    MergeManager<IntWritable, IntWritable> manager =
      new MergeManager<IntWritable, IntWritable>(null, jobConf, fs, null
        , null, null, null, null, null, null, null, null, null, mapOutputFile);

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    LocalDirAllocator lda = new LocalDirAllocator(MRConfig.LOCAL_DIR);
    
    MergeManagerImpl<Text, Text> mergeManager = new MergeManagerImpl<Text, Text>(
        reduceId, jobConf, fs, lda, Reporter.NULL, null, null, null, null, null,
        null, null, new Progress(), new MROutputFiles());
    
    // write map outputs
    Map<String, String> map1 = new TreeMap<String, String>();
    map1.put("apple", "disgusting");
    map1.put("carrot", "delicious");

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    LocalDirAllocator lda = new LocalDirAllocator(MRConfig.LOCAL_DIR);
    
    MergeManagerImpl<Text, Text> mergeManager = new MergeManagerImpl<Text, Text>(
        reduceId, jobConf, fs, lda, Reporter.NULL, null, null, null, null, null,
        null, null, new Progress(), new MROutputFiles());
    
    // write map outputs
    Map<String, String> map1 = new TreeMap<String, String>();
    map1.put("apple", "disgusting");
    map1.put("carrot", "delicious");

View Full Code Here

    InterruptedException {
    JobConf jobConf = new JobConf();
    final int SORT_FACTOR = 5;
    jobConf.setInt(MRJobConfig.IO_SORT_FACTOR, SORT_FACTOR);


    MapOutputFile mapOutputFile = new MROutputFiles();
    FileSystem fs = FileSystem.getLocal(jobConf);
    MergeManagerImpl<IntWritable, IntWritable> manager =
      new MergeManagerImpl<IntWritable, IntWritable>(null, jobConf, fs, null
        , null, null, null, null, null, null, null, null, null, mapOutputFile);

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    InterruptedException {
    JobConf jobConf = new JobConf();
    final int SORT_FACTOR = 5;
    jobConf.setInt(MRJobConfig.IO_SORT_FACTOR, SORT_FACTOR);


    MapOutputFile mapOutputFile = new MROutputFiles();
    FileSystem fs = FileSystem.getLocal(jobConf);
    MergeManager<IntWritable, IntWritable> manager =
      new MergeManager<IntWritable, IntWritable>(null, jobConf, fs, null
        , null, null, null, null, null, null, null, null, null, mapOutputFile);

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Related Classes of org.apache.hadoop.mapred.MROutputFiles

org.apache.hadoop.fs.Path

org.apache.hadoop.mapreduce.task.reduce.TestMergeManager

org.apache.hadoop.mapreduce.task.reduce.TestMerger

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