Package org.apache.hadoop.fs.FileSystem

Examples of org.apache.hadoop.fs.FileSystem.Statistics

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  //fc should be set appropriately by the deriving test.
  protected static FileContext fc = null;
 
  @Test(timeout=60000)
  public void testStatisticsOperations() throws Exception {
    final Statistics stats = new Statistics("file");
    Assert.assertEquals(0L, stats.getBytesRead());
    Assert.assertEquals(0L, stats.getBytesWritten());
    Assert.assertEquals(0, stats.getWriteOps());
    stats.incrementBytesWritten(1000);
    Assert.assertEquals(1000L, stats.getBytesWritten());
    Assert.assertEquals(0, stats.getWriteOps());
    stats.incrementWriteOps(123);
    Assert.assertEquals(123, stats.getWriteOps());
   
    Thread thread = new Thread() {
      @Override
      public void run() {
        stats.incrementWriteOps(1);
      }
    };
    thread.start();
    Uninterruptibles.joinUninterruptibly(thread);
    Assert.assertEquals(124, stats.getWriteOps());
    // Test copy constructor and reset function
    Statistics stats2 = new Statistics(stats);
    stats.reset();
    Assert.assertEquals(0, stats.getWriteOps());
    Assert.assertEquals(0L, stats.getBytesWritten());
    Assert.assertEquals(0L, stats.getBytesRead());
    Assert.assertEquals(124, stats2.getWriteOps());
    Assert.assertEquals(1000L, stats2.getBytesWritten());
    Assert.assertEquals(0L, stats2.getBytesRead());
  }
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  }

  @Test
  public void testStatistics() throws IOException, URISyntaxException {
    URI fsUri = getFsUri();
    Statistics stats = FileContext.getStatistics(fsUri);
    Assert.assertEquals(0, stats.getBytesRead());
    Path filePath = fileContextTestHelper .getTestRootPath(fc, "file1");
    createFile(fc, filePath, numBlocks, blockSize);

    Assert.assertEquals(0, stats.getBytesRead());
    verifyWrittenBytes(stats);
    FSDataInputStream fstr = fc.open(filePath);
    byte[] buf = new byte[blockSize];
    int bytesRead = fstr.read(buf, 0, blockSize);
    fstr.read(0, buf, 0, blockSize);
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    if (scheme == null) {
      throw new IllegalArgumentException("Scheme not defined in the uri: "
          + uri);
    }
    URI baseUri = getBaseUri(uri);
    Statistics result = STATISTICS_TABLE.get(baseUri);
    if (result == null) {
      result = new Statistics(scheme);
      STATISTICS_TABLE.put(baseUri, result);
    }
    return result;
  }
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  protected static synchronized Map<URI, Statistics> getAllStatistics() {
    Map<URI, Statistics> statsMap = new HashMap<URI, Statistics>(
        STATISTICS_TABLE.size());
    for (Map.Entry<URI, Statistics> pair : STATISTICS_TABLE.entrySet()) {
      URI key = pair.getKey();
      Statistics value = pair.getValue();
      Statistics newStatsObj = new Statistics(value);
      statsMap.put(URI.create(key.toString()), newStatsObj);
    }
    return statsMap;
  }
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      inputRecordCounter = reporter.getCounter(MAP_INPUT_RECORDS);
      inputByteCounter = reporter.getCounter(MAP_INPUT_BYTES);
      fileInputByteCounter = reporter
          .getCounter(FileInputFormat.Counter.BYTES_READ);

      Statistics matchedStats = null;
      if (split instanceof FileSplit) {
        matchedStats = getFsStatistics(((FileSplit) split).getPath(), job);
      }
      fsStats = matchedStats;
     
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      this.job = job;
      this.inputRecordCounter = reporter.getCounter(MAP_INPUT_RECORDS);
      this.fileInputByteCounter = reporter
          .getCounter(org.apache.hadoop.mapreduce.lib.input.FileInputFormat.Counter.BYTES_READ);

      Statistics matchedStats = null;
      if (split instanceof org.apache.hadoop.mapreduce.lib.input.FileSplit) {
        matchedStats = getFsStatistics(((org.apache.hadoop.mapreduce.lib.input.FileSplit) split)
            .getPath(), job);
      }
      fsStats = matchedStats;
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    @SuppressWarnings("unchecked")
    NewDirectOutputCollector(org.apache.hadoop.mapreduce.JobContext jobContext,
        JobConf job, TaskUmbilicalProtocol umbilical, TaskReporter reporter)
    throws IOException, ClassNotFoundException, InterruptedException {
      this.reporter = reporter;
      Statistics matchedStats = null;
      if (outputFormat instanceof org.apache.hadoop.mapreduce.lib.output.FileOutputFormat) {
        matchedStats = getFsStatistics(org.apache.hadoop.mapreduce.lib.output.FileOutputFormat
            .getOutputPath(jobContext), job);
      }
      fsStats = matchedStats;
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      FileSystem fs = FileSystem.get(job);

     
      OutputFormat<K, V> outputFormat = job.getOutputFormat();
     
      Statistics matchedStats = null;
      if (outputFormat instanceof FileOutputFormat) {
        matchedStats = getFsStatistics(FileOutputFormat.getOutputPath(job), job);
      }
      fsStats = matchedStats;
      mapOutputRecordCounter = reporter.getCounter(MAP_OUTPUT_RECORDS);
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    if (scheme == null) {
      throw new IllegalArgumentException("Scheme not defined in the uri: "
          + uri);
    }
    URI baseUri = getBaseUri(uri);
    Statistics result = STATISTICS_TABLE.get(baseUri);
    if (result == null) {
      result = new Statistics(scheme);
      STATISTICS_TABLE.put(baseUri, result);
    }
    return result;
  }
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  protected static synchronized Map<URI, Statistics> getAllStatistics() {
    Map<URI, Statistics> statsMap = new HashMap<URI, Statistics>(
        STATISTICS_TABLE.size());
    for (Map.Entry<URI, Statistics> pair : STATISTICS_TABLE.entrySet()) {
      URI key = pair.getKey();
      Statistics value = pair.getValue();
      Statistics newStatsObj = new Statistics(value);
      statsMap.put(URI.create(key.toString()), newStatsObj);
    }
    return statsMap;
  }
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Related Classes of org.apache.hadoop.fs.FileSystem.Statistics

  • org.apache.hadoop.fs.AbstractFileSystem
  • org.apache.hadoop.fs.FCStatisticsBaseTest
  • org.apache.hadoop.mapred.MapTask$DirectMapOutputCollector
  • org.apache.hadoop.mapred.MapTask$NewDirectOutputCollector
  • org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader
  • org.apache.hadoop.mapred.MapTask$TrackedRecordReader
  • org.apache.hadoop.mapred.ReduceTask$NewTrackingRecordWriter
  • org.apache.hadoop.mapred.ReduceTask$OldTrackingRecordWriter
  • org.apache.hadoop.mapred.Task
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