List of seekTo() Examples

Examples of seekTo()

org.apache.cassandra.db.FileStruct.seekTo()
org.apache.cassandra.io.SSTableScanner.seekTo()
org.apache.cassandra.io.sstable.SSTableScanner.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
org.apache.hadoop.io.file.tfile.TFile.Reader.Scanner.seekTo()
org.apache.hadoop.zebra.tfile.TFile.Reader.Scanner.seekTo()
org.apache.lucene.index.DocValuesReader.seekTo()

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

    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);

View Full Code Here

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

    StoreFile refHsf = new StoreFile(this.fs, refPath, conf, cacheConf,
        StoreFile.BloomType.NONE, NoOpDataBlockEncoder.INSTANCE);
    // Now confirm that I can read from the reference and that it only gets
    // keys from top half of the file.
    HFileScanner s = refHsf.createReader().getScanner(false, false);
    for(boolean first = true; (!s.isSeeked() && s.seekTo()) || s.next();) {
      ByteBuffer bb = s.getKey();
      kv = KeyValue.createKeyValueFromKey(bb);
      if (first) {
        assertTrue(Bytes.equals(kv.getRow(), midRow));
        first = false;

View Full Code Here

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

    assertTrue(hsf.isLink());


    // Now confirm that I can read from the link
    int count = 1;
    HFileScanner s = hsf.createReader().getScanner(false, false);
    s.seekTo();
    while (s.next()) {
      count++;
    }
    assertEquals((LAST_CHAR - FIRST_CHAR + 1) * (LAST_CHAR - FIRST_CHAR + 1), count);
  }

View Full Code Here

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

        StoreFile.BloomType.NONE, NoOpDataBlockEncoder.INSTANCE);


    // Now confirm that I can read from the ref to link
    int count = 1;
    HFileScanner s = hsfA.createReader().getScanner(false, false);
    s.seekTo();
    while (s.next()) {
      count++;
    }
    assertTrue(count > 0); // read some rows here

View Full Code Here

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

    StoreFile hsfB = new StoreFile(this.fs, pathB,  conf, cacheConf,
        StoreFile.BloomType.NONE, NoOpDataBlockEncoder.INSTANCE);


    // Now confirm that I can read from the ref to link
    HFileScanner sB = hsfB.createReader().getScanner(false, false);
    sB.seekTo();
    
    //count++ as seekTo() will advance the scanner
    count++;
    while (sB.next()) {
      count++;

View Full Code Here

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

      // Test bottom half first.
      // Now test reading from the top.
      boolean first = true;
      ByteBuffer key = null;
      HFileScanner topScanner = top.getScanner(false, false);
      while ((!topScanner.isSeeked() && topScanner.seekTo()) ||
          (topScanner.isSeeked() && topScanner.next())) {
        key = topScanner.getKey();


        if (topScanner.getReader().getComparator().compare(key.array(),
          key.arrayOffset(), key.limit(), midkey, 0, midkey.length) < 0) {

View Full Code Here

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

      }
      LOG.info("Last in top: " + Bytes.toString(Bytes.toBytes(key)));


      first = true;
      HFileScanner bottomScanner = bottom.getScanner(false, false);
      while ((!bottomScanner.isSeeked() && bottomScanner.seekTo()) ||
          bottomScanner.next()) {
        previous = bottomScanner.getKey();
        key = bottomScanner.getKey();
        if (first) {
          first = false;

View Full Code Here

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

      bottom = new StoreFile(this.fs, bottomPath, conf, cacheConf,
          StoreFile.BloomType.NONE,
          NoOpDataBlockEncoder.INSTANCE).createReader();
      first = true;
      bottomScanner = bottom.getScanner(false, false);
      while ((!bottomScanner.isSeeked() && bottomScanner.seekTo()) ||
          bottomScanner.next()) {
        key = bottomScanner.getKey();
        if (first) {
          first = false;
          keyKV = KeyValue.createKeyValueFromKey(key);

View Full Code Here

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

      }


      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(),

View Full Code Here

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

    }


    @Override
    void doRow(int i) throws Exception {
      HFileScanner scanner = this.reader.getScanner(false, true);
      scanner.seekTo(getGaussianRandomRowBytes());
      for (int ii = 0; ii < 30; ii++) {
        if (!scanner.next()) {
          System.out.println("NOTHING FOLLOWS");
        }
        scanner.getKey();

View Full Code Here

0 1 2 3 4 5

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.