Package org.apache.hadoop.io.SequenceFile

Examples of org.apache.hadoop.io.SequenceFile.Reader

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    sorter.merge(outfiles, output);
   
    // import the evaluations
    LongWritable key = new LongWritable();
    CDFitness value = new CDFitness();
    Reader reader = new Reader(fs, output, conf);
   
    while (reader.next(key, value)) {
      evaluations.add(new CDFitness(value));
    }
   
    reader.close();
  }
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      throw new FileNotFoundException(args[0] + " does not exist");
    }
    if (!fs.isFile(logfile)) {
      throw new IOException(args[0] + " is not a file");
    }
    Reader log = new SequenceFile.Reader(fs, logfile, conf);
    try {
      HLogKey key = new HLogKey();
      HLogEdit val = new HLogEdit();
      while(log.next(key, val)) {
        System.out.println(key.toString() + " " + val.toString());
      }
    } finally {
      log.close();
    }
  }
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      }
      if (dump) {
        if (!fs.isFile(logPath)) {
          throw new IOException(args[i] + " is not a file");
        }
        Reader log = new SequenceFile.Reader(fs, logPath, conf);
        try {
          HLogKey key = new HLogKey();
          HLogEdit val = new HLogEdit();
          while (log.next(key, val)) {
            System.out.println(key.toString() + " " + val.toString());
          }
        } finally {
          log.close();
        }
      } else {
        if (!fs.getFileStatus(logPath).isDir()) {
          throw new IOException(args[i] + " is not a directory");
        }
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  public void testAppend() throws IOException {
    final int COL_COUNT = 10;
    final byte [] regionName = Bytes.toBytes("regionname");
    final byte [] tableName = Bytes.toBytes("tablename");
    final byte [] row = Bytes.toBytes("row");
    Reader reader = null;
    HLog log = new HLog(fs, dir, this.conf, null);
    try {
      // Write columns named 1, 2, 3, etc. and then values of single byte
      // 1, 2, 3...
      long timestamp = System.currentTimeMillis();
      TreeMap<HStoreKey, byte []> cols = new TreeMap<HStoreKey, byte []>();
      for (int i = 0; i < COL_COUNT; i++) {
        cols.put(new HStoreKey(row, Bytes.toBytes(Integer.toString(i)), timestamp),
            new byte[] { (byte)(i + '0') });
      }
      log.append(regionName, tableName, cols, false);
      long logSeqId = log.startCacheFlush();
      log.completeCacheFlush(regionName, tableName, logSeqId);
      log.close();
      Path filename = log.computeFilename(log.getFilenum());
      log = null;
      // Now open a reader on the log and assert append worked.
      reader = new SequenceFile.Reader(fs, filename, conf);
      HLogKey key = new HLogKey();
      HLogEdit val = new HLogEdit();
      for (int i = 0; i < COL_COUNT; i++) {
        reader.next(key, val);
        assertTrue(Bytes.equals(regionName, key.getRegionName()));
        assertTrue(Bytes.equals(tableName, key.getTablename()));
        assertTrue(Bytes.equals(row, key.getRow()));
        assertEquals((byte)(i + '0'), val.getVal()[0]);
        System.out.println(key + " " + val);
      }
      while (reader.next(key, val)) {
        // Assert only one more row... the meta flushed row.
        assertTrue(Bytes.equals(regionName, key.getRegionName()));
        assertTrue(Bytes.equals(tableName, key.getTablename()));
        assertTrue(Bytes.equals(HLog.METAROW, key.getRow()));
        assertTrue(Bytes.equals(HLog.METACOLUMN, val.getColumn()));
        assertEquals(0, HLogEdit.completeCacheFlush.compareTo(val.getVal()));
        System.out.println(key + " " + val);
      }
    } finally {
      if (log != null) {
        log.closeAndDelete();
      }
      if (reader != null) {
        reader.close();
      }
    }
  }
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  public void testAppend() throws IOException {
    final int COL_COUNT = 10;
    final Text regionName = new Text("regionname");
    final Text tableName = new Text("tablename");
    final Text row = new Text("row");
    Reader reader = null;
    HLog log = new HLog(fs, dir, this.conf, null);
    try {
      // Write columns named 1, 2, 3, etc. and then values of single byte
      // 1, 2, 3...
      long timestamp = System.currentTimeMillis();
      TreeMap<HStoreKey, byte []> cols = new TreeMap<HStoreKey, byte []>();
      for (int i = 0; i < COL_COUNT; i++) {
        cols.put(new HStoreKey(row, new Text(Integer.toString(i)), timestamp),
            new byte[] { (byte)(i + '0') });
      }
      log.append(regionName, tableName, cols);
      long logSeqId = log.startCacheFlush();
      log.completeCacheFlush(regionName, tableName, logSeqId);
      log.close();
      Path filename = log.computeFilename(log.getFilenum() - 1);
      log = null;
      // Now open a reader on the log and assert append worked.
      reader = new SequenceFile.Reader(fs, filename, conf);
      HLogKey key = new HLogKey();
      HLogEdit val = new HLogEdit();
      for (int i = 0; i < COL_COUNT; i++) {
        reader.next(key, val);
        assertEquals(regionName, key.getRegionName());
        assertEquals(tableName, key.getTablename());
        assertEquals(row, key.getRow());
        assertEquals((byte)(i + '0'), val.getVal()[0]);
        System.out.println(key + " " + val);
      }
      while (reader.next(key, val)) {
        // Assert only one more row... the meta flushed row.
        assertEquals(regionName, key.getRegionName());
        assertEquals(tableName, key.getTablename());
        assertEquals(HLog.METAROW, key.getRow());
        assertEquals(HLog.METACOLUMN, val.getColumn());
        assertEquals(0, HLogEdit.completeCacheFlush.compareTo(val.getVal()));
        System.out.println(key + " " + val);
      }
    } finally {
      if (log != null) {
        log.closeAndDelete();
      }
      if (reader != null) {
        reader.close();
      }
    }
  }
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      }
      if (dump) {
        if (!fs.isFile(logPath)) {
          throw new IOException(args[i] + " is not a file");
        }
        Reader log = new SequenceFile.Reader(fs, logPath, conf);
        try {
          HLogKey key = new HLogKey();
          HLogEdit val = new HLogEdit();
          while (log.next(key, val)) {
            System.out.println(key.toString() + " " + val.toString());
          }
        } finally {
          log.close();
        }
      } else {
        if (!fs.getFileStatus(logPath).isDir()) {
          throw new IOException(args[i] + " is not a directory");
        }
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    }
    final int COL_COUNT = 10;
    final Text regionName = new Text("regionname");
    final Text tableName = new Text("tablename");
    final Text row = new Text("row");
    Reader reader = null;
    HLog log = new HLog(fs, dir, this.conf);
    try {
      // Write columns named 1, 2, 3, etc. and then values of single byte
      // 1, 2, 3...
      TreeMap<Text, byte []> cols = new TreeMap<Text, byte []>();
      for (int i = 0; i < COL_COUNT; i++) {
        cols.put(new Text(Integer.toString(i)),
            new byte[] { (byte)(i + '0') });
      }
      long timestamp = System.currentTimeMillis();
      log.append(regionName, tableName, row, cols, timestamp);
      long logSeqId = log.startCacheFlush();
      log.completeCacheFlush(regionName, tableName, logSeqId);
      log.close();
      Path filename = log.computeFilename(log.filenum - 1);
      log = null;
      // Now open a reader on the log and assert append worked.
      reader = new SequenceFile.Reader(fs, filename, conf);
      HLogKey key = new HLogKey();
      HLogEdit val = new HLogEdit();
      for (int i = 0; i < COL_COUNT; i++) {
        reader.next(key, val);
        assertEquals(regionName, key.getRegionName());
        assertEquals(tableName, key.getTablename());
        assertEquals(row, key.getRow());
        assertEquals((byte)(i + '0'), val.getVal()[0]);
        System.out.println(key + " " + val);
      }
      while (reader.next(key, val)) {
        // Assert only one more row... the meta flushed row.
        assertEquals(regionName, key.getRegionName());
        assertEquals(tableName, key.getTablename());
        assertEquals(HLog.METAROW, key.getRow());
        assertEquals(HLog.METACOLUMN, val.getColumn());
        assertEquals(0, HGlobals.completeCacheFlush.compareTo(val.getVal()));
        System.out.println(key + " " + val);
      }
    } finally {
      if (log != null) {
        log.closeAndDelete();
      }
      if (reader != null) {
        reader.close();
      }
      if (fs.exists(dir)) {
        fs.delete(dir);
      }
    }
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      }
      if (dump) {
        if (!fs.isFile(logPath)) {
          throw new IOException(args[i] + " is not a file");
        }
        Reader log = new SequenceFile.Reader(fs, logPath, conf);
        try {
          HLogKey key = new HLogKey();
          HLogEdit val = new HLogEdit();
          while (log.next(key, val)) {
            System.out.println(key.toString() + " " + val.toString());
          }
        } finally {
          log.close();
        }
      } else {
        if (!fs.getFileStatus(logPath).isDir()) {
          throw new IOException(args[i] + " is not a directory");
        }
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      }
      if (dump) {
        if (!fs.isFile(logPath)) {
          throw new IOException(args[i] + " is not a file");
        }
        Reader log = new SequenceFile.Reader(fs, logPath, conf);
        try {
          HLogKey key = new HLogKey();
          HLogEdit val = new HLogEdit();
          while (log.next(key, val)) {
            System.out.println(key.toString() + " " + val.toString());
          }
        } finally {
          log.close();
        }
      } else {
        if (!fs.getFileStatus(logPath).isDir()) {
          throw new IOException(args[i] + " is not a directory");
        }
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  public void testAppend() throws IOException {
    final int COL_COUNT = 10;
    final byte [] regionName = Bytes.toBytes("regionname");
    final byte [] tableName = Bytes.toBytes("tablename");
    final byte [] row = Bytes.toBytes("row");
    Reader reader = null;
    HLog log = new HLog(fs, dir, this.conf, null);
    try {
      // Write columns named 1, 2, 3, etc. and then values of single byte
      // 1, 2, 3...
      long timestamp = System.currentTimeMillis();
      TreeMap<HStoreKey, byte []> cols = new TreeMap<HStoreKey, byte []>();
      for (int i = 0; i < COL_COUNT; i++) {
        cols.put(new HStoreKey(row, Bytes.toBytes(Integer.toString(i)), timestamp),
            new byte[] { (byte)(i + '0') });
      }
      log.append(regionName, tableName, cols);
      long logSeqId = log.startCacheFlush();
      log.completeCacheFlush(regionName, tableName, logSeqId);
      log.close();
      Path filename = log.computeFilename(log.getFilenum());
      log = null;
      // Now open a reader on the log and assert append worked.
      reader = new SequenceFile.Reader(fs, filename, conf);
      HLogKey key = new HLogKey();
      HLogEdit val = new HLogEdit();
      for (int i = 0; i < COL_COUNT; i++) {
        reader.next(key, val);
        assertTrue(Bytes.equals(regionName, key.getRegionName()));
        assertTrue(Bytes.equals(tableName, key.getTablename()));
        assertTrue(Bytes.equals(row, key.getRow()));
        assertEquals((byte)(i + '0'), val.getVal()[0]);
        System.out.println(key + " " + val);
      }
      while (reader.next(key, val)) {
        // Assert only one more row... the meta flushed row.
        assertTrue(Bytes.equals(regionName, key.getRegionName()));
        assertTrue(Bytes.equals(tableName, key.getTablename()));
        assertTrue(Bytes.equals(HLog.METAROW, key.getRow()));
        assertTrue(Bytes.equals(HLog.METACOLUMN, val.getColumn()));
        assertEquals(0, HLogEdit.completeCacheFlush.compareTo(val.getVal()));
        System.out.println(key + " " + val);
      }
    } finally {
      if (log != null) {
        log.closeAndDelete();
      }
      if (reader != null) {
        reader.close();
      }
    }
  }
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