Package org.apache.hadoop.io.file.tfile.TFile

Examples of org.apache.hadoop.io.file.tfile.TFile.Reader.createScanner()

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  static void readRecords(FileSystem fs, Path path, int count,
      Configuration conf) throws IOException {
    Reader reader =
        new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
    Scanner scanner = reader.createScanner();

    try {
      for (int nx = 0; nx < count; nx++, scanner.advance()) {
        Assert.assertFalse(scanner.atEnd());
        // Assert.assertTrue(scanner.next());
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    }
  }

  private void checkBlockIndex(int recordIndex, int blockIndexExpected) throws IOException {
    Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
    Scanner scanner = reader.createScanner();
    scanner.seekTo(composeSortedKey(KEY, recordIndex).getBytes());
    Assert.assertEquals(blockIndexExpected, scanner.currentLocation
        .getBlockIndex());
    scanner.close();
    reader.close();
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        new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
    long offset = 0;
    long rowCount = 0;
    BytesWritable key, value;
    for (int i = 0; i < numSplit; ++i, offset += splitSize) {
      Scanner scanner = reader.createScanner(offset, splitSize);
      int count = 0;
      key = new BytesWritable();
      value = new BytesWritable();
      while (!scanner.atEnd()) {
        scanner.entry().get(key, value);
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      return;
    closeOutput();

    Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
    Assert.assertTrue(reader.isSorted());
    Scanner scanner = reader.createScanner();
    Assert.assertTrue(scanner.atEnd());
    scanner.close();
    reader.close();
  }
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  public void testLocate() throws IOException {
    if (skip)
      return;
    writeRecords(3 * records1stBlock);
    Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
    Scanner scanner = reader.createScanner();
    Location loc2 =
        locate(scanner, composeSortedKey(KEY, 3 * records1stBlock, 2)
            .getBytes());
    Location locLastIn1stBlock =
        locate(scanner, composeSortedKey(KEY, 3 * records1stBlock,
 
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    if (skip)
      return;
    writeRecords(5);

    Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
    Scanner scanner = reader.createScanner();

    byte[] vbuf = new byte[BUF_SIZE];
    int vlen = scanner.entry().getValueLength();
    scanner.entry().getValue(vbuf);
    Assert.assertEquals(new String(vbuf, 0, vlen), VALUE + 0);
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    if (skip)
      return;
    closeOutput();

    Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
    Scanner scanner = reader.createScanner();
    try {
      scanner.lowerBound("keyX".getBytes(), -1, 4);
      Assert.fail("Error on handling negative offset.");
    }
    catch (Exception e) {
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    if (skip)
      return;
    closeOutput();

    Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
    Scanner scanner = reader.createScanner();
    try {
      scanner.lowerBound("keyX".getBytes(), 0, -1);
      Assert.fail("Error on handling negative length.");
    }
    catch (Exception e) {
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      return;
    writeRecords(3);

    Reader reader =
        new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
    Scanner scanner = reader.createScanner();
    try {
      // test negative array offset
      try {
        scanner.seekTo("keyY".getBytes(), -1, 4);
        Assert.fail("Failed to handle negative offset.");
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  static void readRecords(FileSystem fs, Path path, int count,
      Configuration conf) throws IOException {
    Reader reader =
        new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
    Scanner scanner = reader.createScanner();

    try {
      for (int nx = 0; nx < count; nx++, scanner.advance()) {
        Assert.assertFalse(scanner.atEnd());
        // Assert.assertTrue(scanner.next());
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