Package org.apache.cassandra.io.util

Examples of org.apache.cassandra.io.util.RandomAccessReader

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     * @throws IOException on any I/O error
     */
    public void write(WritableByteChannel channel) throws IOException
    {
        long totalSize = totalSize();
        RandomAccessReader file = sstable.openDataReader();
        ChecksumValidator validator = new File(sstable.descriptor.filenameFor(Component.CRC)).exists()
                                    ? DataIntegrityMetadata.checksumValidator(sstable.descriptor)
                                    : null;
        transferBuffer = validator == null ? new byte[DEFAULT_CHUNK_SIZE] : new byte[validator.chunkSize];

        // setting up data compression stream
        compressedOutput = new LZFOutputStream(Channels.newOutputStream(channel));
        long progress = 0L;

        try
        {
            // stream each of the required sections of the file
            for (Pair<Long, Long> section : sections)
            {
                long start = validator == null ? section.left : validator.chunkStart(section.left);
                int readOffset = (int) (section.left - start);
                // seek to the beginning of the section
                file.seek(start);
                if (validator != null)
                    validator.seek(start);

                // length of the section to read
                long length = section.right - start;
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    @Override
    public void write(WritableByteChannel channel) throws IOException
    {
        long totalSize = totalSize();
        RandomAccessReader file = sstable.openDataReader();
        FileChannel fc = file.getChannel();

        long progress = 0L;
        // calculate chunks to transfer. we want to send continuous chunks altogether.
        List<Pair<Long, Long>> sections = getTransferSections(compressionInfo.chunks);
        try
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    public String getPath()
    {
        // if input is from file, then return that path, otherwise it's from streaming
        if (in instanceof RandomAccessReader)
        {
            RandomAccessReader file = (RandomAccessReader) in;
            return file.getPath();
        }
        else
        {
            throw new UnsupportedOperationException();
        }
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    public String getPath()
    {
        // if input is from file, then return that path, otherwise it's from streaming
        if (in instanceof RandomAccessReader)
        {
            RandomAccessReader file = (RandomAccessReader) in;
            return file.getPath();
        }
        else
        {
            throw new UnsupportedOperationException();
        }
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        try
        {
            if (input instanceof RandomAccessReader)
            {
                RandomAccessReader file = (RandomAccessReader) input;
                file.seek(this.dataStart);
                if (dataStart + dataSize > file.length())
                    throw new IOException(String.format("dataSize of %s starting at %s would be larger than file %s length %s",
                                          dataSize, dataStart, file.getPath(), file.length()));
                if (checkData && !dataVersion.hasPromotedIndexes)
                {
                    try
                    {
                        IndexHelper.skipBloomFilter(file);
                    }
                    catch (Exception e)
                    {
                        if (e instanceof EOFException)
                            throw (EOFException) e;

                        logger.debug("Invalid bloom filter in {}; will rebuild it", sstable);
                    }
                    try
                    {
                        // skipping the old row-level BF should have left the file position ready to deserialize index
                        IndexHelper.deserializeIndex(file);
                    }
                    catch (Exception e)
                    {
                        logger.debug("Invalid row summary in {}; will rebuild it", sstable);
                    }
                    file.seek(this.dataStart);
                    inputWithTracker.reset(0);
                }
            }

            if (sstable != null && !dataVersion.hasPromotedIndexes)
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    public String getPath()
    {
        // if input is from file, then return that path, otherwise it's from streaming
        if (input instanceof RandomAccessReader)
        {
            RandomAccessReader file = (RandomAccessReader) input;
            return file.getPath();
        }
        else
        {
            throw new UnsupportedOperationException();
        }
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    public void reset()
    {
        if (!(input instanceof RandomAccessReader))
            throw new UnsupportedOperationException();

        RandomAccessReader file = (RandomAccessReader) input;
        file.seek(columnPosition);
        inputWithTracker.reset(headerSize());
    }
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        verifySingle(ssTable, bytes, key);
    }

    private void verifySingle(SSTableReader sstable, ByteBuffer bytes, ByteBuffer key) throws IOException
    {
        RandomAccessReader file = sstable.openDataReader(false);
        file.seek(sstable.getPosition(sstable.partitioner.decorateKey(key), SSTableReader.Operator.EQ).position);
        assert key.equals(ByteBufferUtil.readWithShortLength(file));
        int size = (int)SSTableReader.readRowSize(file, sstable.descriptor);
        byte[] bytes2 = new byte[size];
        file.readFully(bytes2);
        assert ByteBuffer.wrap(bytes2).equals(bytes);
    }
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    private void verifyMany(SSTableReader sstable, Map<ByteBuffer, ByteBuffer> map) throws IOException
    {
        List<ByteBuffer> keys = new ArrayList<ByteBuffer>(map.keySet());
        //Collections.shuffle(keys);
        RandomAccessReader file = sstable.openDataReader(false);
        for (ByteBuffer key : keys)
        {
            file.seek(sstable.getPosition(sstable.partitioner.decorateKey(key), SSTableReader.Operator.EQ).position);
            assert key.equals( ByteBufferUtil.readWithShortLength(file));
            int size = (int)SSTableReader.readRowSize(file, sstable.descriptor);
            byte[] bytes2 = new byte[size];
            file.readFully(bytes2);
            assert Arrays.equals(bytes2, map.get(key).array());
        }
    }
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    @Override
    public void write(WritableByteChannel channel) throws IOException
    {
        long totalSize = totalSize();
        RandomAccessReader file = sstable.openDataReader();
        FileChannel fc = file.getChannel();

        long progress = 0L;
        // calculate chunks to transfer. we want to send continuous chunks altogether.
        List<Pair<Long, Long>> sections = getTransferSections(compressionInfo.chunks);
        try
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Related Classes of org.apache.cassandra.io.util.RandomAccessReader

  • org.apache.cassandra.db.commitlog.CommitLogReplayer
  • org.apache.cassandra.db.compaction.CompactionManager
  • org.apache.cassandra.db.TableTest
  • org.apache.cassandra.io.compress.CompressedRandomAccessReaderTest
  • org.apache.cassandra.io.FSReadError
  • org.apache.cassandra.io.sstable.SSTableIdentityIterator
  • org.apache.cassandra.io.sstable.SSTableReader
  • org.apache.cassandra.io.sstable.SSTableTest
  • org.apache.cassandra.service.FileCacheService
  • org.apache.cassandra.streaming.compress.CompressedFileStreamTask
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