Examples of org.apache.hadoop.hbase.io.hfile.HFileScanner.seekTo()

Package org.apache.hadoop.hbase.io.hfile

Class org.apache.hadoop.hbase.io.hfile.HFileScanner

Examples of org.apache.hadoop.hbase.io.hfile.HFileScanner.seekTo()

org.apache.hadoop.hbase.io.hfile.HFileScanner.seekTo()
SeekTo or just before the passed key. Examine the return code to figure whether we found the key or not. Consider the key stream of all the keys in the file, k[0] .. k[n], where there are n keys in the file. @param key Key to find. @return -1, if key < k[0], no position;0, such that k[i] = key and scanner is left in position i; and 1, such that k[i] < key, and scanner is left in position i. Furthermore, there may be a k[i+1], such that k[i] < key < k[i+1] but there may not be a k[i+1], and next() will return false (EOF). @throws IOException

      }


      if (verifyBulkLoads) {
        KeyValue prevKV = null;
        HFileScanner scanner = reader.getScanner(false, false, false);
        scanner.seekTo();
        do {
          KeyValue kv = scanner.getKeyValue();
          if (prevKV != null) {
            if (Bytes.compareTo(prevKV.getBuffer(), prevKV.getRowOffset(),
                prevKV.getRowLength(), kv.getBuffer(), kv.getRowOffset(),

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  private void verifyCounts(int countRow1, int countRow2) throws Exception {
    int count1 = 0;
    int count2 = 0;
    for (StoreFile f: this.r.stores.get(COLUMN_FAMILY_TEXT).getStorefiles()) {
      HFileScanner scanner = f.getReader().getScanner(false, false);
      scanner.seekTo();
      do {
        byte [] row = scanner.getKeyValue().getRow();
        if (Bytes.equals(row, STARTROW)) {
          count1++;
        } else if(Bytes.equals(row, secondRowBytes)) {

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  private int count() throws IOException {
    int count = 0;
    for (StoreFile f: this.r.stores.
        get(COLUMN_FAMILY_TEXT).getStorefiles()) {
      HFileScanner scanner = f.getReader().getScanner(false, false);
      if (!scanner.seekTo()) {
        continue;
      }
      do {
        count++;
      } while(scanner.next());

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    @Override
    void doRow(int i) throws Exception {
      HFileScanner scanner = this.reader.getScanner(false, false);
      byte [] b = getRandomRow();
      if (scanner.seekTo(b) != 0) {
        LOG.info("Nonexistent row: " + new String(b));
        return;
      }
      ByteBuffer k = scanner.getKey();
      PerformanceEvaluationCommons.assertKey(b, k);

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    @Override
    void doRow(int i) throws Exception {
      HFileScanner scanner = this.reader.getScanner(false, true);
      byte[] gaussianRandomRowBytes = getGaussianRandomRowBytes();
      if (scanner.seekTo(gaussianRandomRowBytes) < 0) {
        LOG.info("Not able to seekTo " + new String(gaussianRandomRowBytes));
        return;
      }
      for (int ii = 0; ii < 30; ii++) {
        if (!scanner.next()) {

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    @Override
    void doRow(int i) throws Exception {
      HFileScanner scanner = this.reader.getScanner(false, true);
      byte [] b = getRandomRow();
      if (scanner.seekTo(b) < 0) {
        LOG.info("Not able to seekTo " + new String(b));
        return;
      }
      ByteBuffer k = scanner.getKey();
      PerformanceEvaluationCommons.assertKey(b, k);

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    HFileScanner scanner = reader.getScanner(false, true);


    FaultyInputStream inStream = faultyfs.inStreams.get(0).get();
    assertNotNull(inStream);


    scanner.seekTo();
    // Do at least one successful read
    assertTrue(scanner.next());


    faultyfs.startFaults();

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              .withBloomType(bloomFilterType)
              .withChecksumType(Store.getChecksumType(conf))
              .withBytesPerChecksum(Store.getBytesPerChecksum(conf))
              .build();
      HFileScanner scanner = halfReader.getScanner(false, false, false);
      scanner.seekTo();
      do {
        KeyValue kv = scanner.getKeyValue();
        halfWriter.append(kv);
      } while (scanner.next());

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    Configuration conf = util.getConfiguration();
    HFile.Reader reader = HFile.createReader(
        p.getFileSystem(conf), p, new CacheConfig(conf));
    reader.loadFileInfo();
    HFileScanner scanner = reader.getScanner(false, false);
    scanner.seekTo();
    int count = 0;
    do {
      count++;
    } while (scanner.next());
    assertTrue(count > 0);

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              .withBloomType(bloomFilterType)
              .withChecksumType(Store.getChecksumType(conf))
              .withBytesPerChecksum(Store.getBytesPerChecksum(conf))
              .build();
      HFileScanner scanner = halfReader.getScanner(false, false, false);
      scanner.seekTo();
      do {
        KeyValue kv = scanner.getKeyValue();
        halfWriter.append(kv);
      } while (scanner.next());

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