Examples of DecoratedKey

org.apache.cassandra.db.DecoratedKey
Represents a decorated key, handy for certain operations where just working with strings gets slow. We do a lot of sorting of DecoratedKeys, so for speed, we assume that tokens correspond one-to-one with keys. This is not quite correct in the case of RandomPartitioner (which uses MD5 to hash keys to tokens); if this matters, you can subclass RP to use a stronger hash, or use a non-lossy tokenization scheme (as in the OrderPreservingPartitioner classes).

Examples of org.apache.cassandra.db.DecoratedKey

            add(ssTableReader, newLevel);


        if (newLevel != 0)
        {
            // Integerity check
            DecoratedKey last = null;
            Collections.sort(generations[newLevel], SSTable.sstableComparator);
            for (SSTableReader sstable : generations[newLevel])
            {
                assert last == null || sstable.first.compareTo(last) > 0;
                last = sstable.last;

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Examples of org.apache.cassandra.db.DecoratedKey

        if (file == null)
            return;


        try
        {
            DecoratedKey keyInDisk = SSTableReader.decodeKey(sstable.partitioner,
                                                             sstable.descriptor,
                                                             ByteBufferUtil.readWithShortLength(file));
            assert keyInDisk.equals(key) : String.format("%s != %s in %s", keyInDisk, key, file.getPath());
            SSTableReader.readRowSize(file, sstable.descriptor);
            read(sstable, file);
        }
        catch (IOException e)
        {

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Examples of org.apache.cassandra.db.DecoratedKey

        if (fileToClose == null)
            return;


        try
        {
            DecoratedKey keyInDisk = SSTableReader.decodeKey(sstable.partitioner,
                                                             sstable.descriptor,
                                                             ByteBufferUtil.readWithShortLength(fileToClose));
            assert keyInDisk.equals(key)
                   : String.format("%s != %s in %s", keyInDisk, key, fileToClose.getPath());
            SSTableReader.readRowSize(fileToClose, sstable.descriptor);
        }
        catch (IOException e)
        {

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Examples of org.apache.cassandra.db.DecoratedKey

                    int numkeys = keys.size();
                    Random random = new Random();
                    // sample the column family using random keys from the index
                    while (true)
                    {
                        DecoratedKey dk = keys.get(random.nextInt(numkeys));
                        if (!tree.split(dk.token))
                            break;
                    }
                }
            }

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Examples of org.apache.cassandra.db.DecoratedKey

                {
                    int size = in.readInt();
                    byte[] bytes = new byte[size];
                    in.readFully(bytes);
                    ByteBuffer buffer = ByteBuffer.wrap(bytes);
                    DecoratedKey key;
                    try
                    {
                        key = partitioner.decorateKey(buffer);
                    }
                    catch (Exception e)

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Examples of org.apache.cassandra.db.DecoratedKey

        if (file == null)
            return;


        try
        {
            DecoratedKey keyInDisk = SSTableReader.decodeKey(sstable.partitioner,
                                                             sstable.descriptor,
                                                             ByteBufferUtil.readWithShortLength(file));
            assert keyInDisk.equals(key) : String.format("%s != %s in %s", keyInDisk, key, file.getPath());
            SSTableReader.readRowSize(file, sstable.descriptor);
            read(sstable, file);
        }
        catch (IOException e)
        {

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Examples of org.apache.cassandra.db.DecoratedKey


            // build the index and filter
            long rows = 0;
            try
            {
                DecoratedKey key;
                long rowPosition = 0;
                while (rowPosition < dfile.length())
                {
                    key = SSTableReader.decodeKey(StorageService.getPartitioner(), desc, ByteBufferUtil.readWithShortLength(dfile));
                    iwriter.afterAppend(key, rowPosition);

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Examples of org.apache.cassandra.db.DecoratedKey


    protected CompactedRow getReduced()
    {
        assert rows.size() > 0;
        DataOutputBuffer buffer = new DataOutputBuffer();
        DecoratedKey key = rows.get(0).getKey();


        try
        {
            if (rows.size() > 1 || major)
            {

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Examples of org.apache.cassandra.db.DecoratedKey

                int numkeys = keys.size();
                Random random = new Random();
                // sample the column family using random keys from the index 
                while (true)
                {
                    DecoratedKey dk = keys.get(random.nextInt(numkeys));
                    if (!tree.split(dk.token))
                        break;
                }
            }
            logger.debug("Prepared AEService tree of size " + tree.size() + " for " + cf);

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Examples of org.apache.cassandra.db.DecoratedKey

    public SSTableNamesIterator(SSTableReader ssTable, String key, SortedSet<byte[]> columnNames) throws IOException
    {
        assert columnNames != null;
        this.columns = columnNames;


        DecoratedKey decoratedKey = ssTable.getPartitioner().decorateKey(key);


        FileDataInput file = ssTable.getFileDataInput(decoratedKey, DatabaseDescriptor.getIndexedReadBufferSizeInKB() * 1024);
        if (file == null)
            return;
        try
        {
            DecoratedKey keyInDisk = ssTable.getPartitioner().convertFromDiskFormat(file.readUTF());
            assert keyInDisk.equals(decoratedKey) : keyInDisk;
            file.readInt(); // data size


            /* Read the bloom filter summarizing the columns */
            BloomFilter bf = IndexHelper.defreezeBloomFilter(file);
            List<byte[]> filteredColumnNames = new ArrayList<byte[]>(columnNames.size());

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