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.cassandra.db.FileStruct.seekTo()


        // verify
        SSTable.indexMetadataMap_.clear(); // force reloading the index
        ssTable = new SSTable(f.getPath() + "-Data.db", new OrderPreservingPartitioner());
        FileStruct fs = new FileStruct(SequenceFile.bufferedReader(ssTable.dataFile_, 128 * 1024), new OrderPreservingPartitioner());
        fs.seekTo(key);
        int size = fs.getBufIn().readInt();
        byte[] bytes2 = new byte[size];
        fs.getBufIn().readFully(bytes2);
        assert Arrays.equals(bytes2, bytes);
    }

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Examples of org.apache.cassandra.io.SSTableScanner.seekTo()


        // sstables
        for (SSTableReader sstable : ssTables_)
        {
            final SSTableScanner scanner = sstable.getScanner(KEY_RANGE_FILE_BUFFER_SIZE);
            scanner.seekTo(startWith);
            Iterator<DecoratedKey> iter = new CloseableIterator<DecoratedKey>()
            {
                public boolean hasNext()
                {
                    return scanner.hasNext();

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Examples of org.apache.cassandra.io.sstable.SSTableScanner.seekTo()


        // sstables
        for (SSTableReader sstable : sstables)
        {
            final SSTableScanner scanner = sstable.getScanner(RANGE_FILE_BUFFER_SIZE, filter);
            scanner.seekTo(startWith);
            assert scanner instanceof Closeable; // otherwise we leak FDs
            iterators.add(scanner);
        }


        Iterator<IColumnIterator> collated = IteratorUtils.collatedIterator(COMPARE_BY_KEY, iterators);

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Examples of org.apache.cassandra.io.sstable.SSTableScanner.seekTo()

        }


        for (SSTableReader sstable : sstables)
        {
            final SSTableScanner scanner = sstable.getScanner(filter);
            scanner.seekTo(startWith);
            assert scanner instanceof Closeable; // otherwise we leak FDs
            iterators.add(scanner);
        }


        // reduce rows from all sources into a single row

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Examples of org.apache.cassandra.io.sstable.SSTableScanner.seekTo()

        assertEquals(1, cfs.getSSTables().size());


        // check that the shadowed column is gone
        SSTableReader sstable = cfs.getSSTables().iterator().next();
        SSTableScanner scanner = sstable.getScanner(new QueryFilter(null, new QueryPath("Super1", scName), new IdentityQueryFilter()));
        scanner.seekTo(key);
        OnDiskAtomIterator iter = scanner.next();
        assertEquals(key, iter.getKey());
        SuperColumn sc = (SuperColumn) iter.next();
        assert sc.getSubColumns().isEmpty();
    }

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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(),

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

              .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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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(),

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

  @Override
  public byte[] getFirstKey() {
    if (!firstKeySeeked) {
      HFileScanner scanner = getScanner(true, true, false);
      try {
        if (scanner.seekTo()) {
          this.firstKey = Bytes.toBytes(scanner.getKey());
        }
        firstKeySeeked = true;
      } catch (IOException e) {
        LOG.warn("Failed seekTo first KV in the file", e);

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