import org.apache.cassandra.utils.BytesReadTracker; //导入依赖的package包/类
/**
 * @param channel where this reads data from
 * @return SSTable transferred
 * @throws IOException if reading the remote sstable fails. Will throw an RTE if local write fails.
 */
public SSTableWriter read(ReadableByteChannel channel) throws IOException
{
    logger.debug("reading file from {}, repairedAt = {}", session.peer, repairedAt);
    long totalSize = totalSize();

    Pair<String, String> kscf = Schema.instance.getCF(cfId);
    if (kscf == null)
    {
        // schema was dropped during streaming
        throw new IOException("CF " + cfId + " was dropped during streaming");
    }
    ColumnFamilyStore cfs = Keyspace.open(kscf.left).getColumnFamilyStore(kscf.right);

    SSTableWriter writer = createWriter(cfs, totalSize, repairedAt);
    DataInputStream dis = new DataInputStream(new LZFInputStream(Channels.newInputStream(channel)));
    BytesReadTracker in = new BytesReadTracker(dis);
    try
    {
        while (in.getBytesRead() < totalSize)
        {
            writeRow(writer, in, cfs);
            // TODO move this to BytesReadTracker
            session.progress(desc, ProgressInfo.Direction.IN, in.getBytesRead(), totalSize);
        }
        return writer;
    }
    catch (Throwable e)
    {
        writer.abort();
        drain(dis, in.getBytesRead());
        if (e instanceof IOException)
            throw (IOException) e;
        else
            throw Throwables.propagate(e);
    }
}
 

import org.apache.cassandra.utils.BytesReadTracker; //导入依赖的package包/类
/**
 * @return SSTable transferred
 * @throws java.io.IOException if reading the remote sstable fails. Will throw an RTE if local write fails.
 */
@Override
public SSTableReader read(ReadableByteChannel channel) throws IOException
{
    long totalSize = totalSize();

    Pair<String, String> kscf = Schema.instance.getCF(cfId);
    ColumnFamilyStore cfs = Keyspace.open(kscf.left).getColumnFamilyStore(kscf.right);

    SSTableWriter writer = createWriter(cfs, totalSize);

    CompressedInputStream cis = new CompressedInputStream(Channels.newInputStream(channel), compressionInfo, inputVersion.hasPostCompressionAdlerChecksums);
    BytesReadTracker in = new BytesReadTracker(new DataInputStream(cis));
    try
    {
        for (Pair<Long, Long> section : sections)
        {
            long length = section.right - section.left;
            // skip to beginning of section inside chunk
            cis.position(section.left);
            in.reset(0);
            while (in.getBytesRead() < length)
            {
                writeRow(writer, in, cfs);
                // when compressed, report total bytes of compressed chunks read since remoteFile.size is the sum of chunks transferred
                session.progress(desc, ProgressInfo.Direction.IN, cis.getTotalCompressedBytesRead(), totalSize);
            }
        }
        return writer.closeAndOpenReader();
    }
    catch (Throwable e)
    {
        writer.abort();
        drain(cis, in.getBytesRead());
        if (e instanceof IOException)
            throw (IOException) e;
        else
            throw Throwables.propagate(e);
    }
}
 

import org.apache.cassandra.utils.BytesReadTracker; //导入依赖的package包/类
/**
 * @param channel where this reads data from
 * @return SSTable transferred
 * @throws IOException if reading the remote sstable fails. Will throw an RTE if local write fails.
 */
public SSTableReader read(ReadableByteChannel channel) throws IOException
{
    long totalSize = totalSize();

    Pair<String, String> kscf = Schema.instance.getCF(cfId);
    ColumnFamilyStore cfs = Keyspace.open(kscf.left).getColumnFamilyStore(kscf.right);

    SSTableWriter writer = createWriter(cfs, totalSize);
    DataInputStream dis = new DataInputStream(new LZFInputStream(Channels.newInputStream(channel)));
    BytesReadTracker in = new BytesReadTracker(dis);
    try
    {
        while (in.getBytesRead() < totalSize)
        {
            writeRow(writer, in, cfs);
            // TODO move this to BytesReadTracker
            session.progress(desc, ProgressInfo.Direction.IN, in.getBytesRead(), totalSize);
        }
        return writer.closeAndOpenReader();
    }
    catch (Throwable e)
    {
        writer.abort();
        drain(dis, in.getBytesRead());
        if (e instanceof IOException)
            throw (IOException) e;
        else
            throw Throwables.propagate(e);
    }
}
 

import org.apache.cassandra.utils.BytesReadTracker; //导入依赖的package包/类
/**
 * @param channel where this reads data from
 * @return SSTable transferred
 * @throws IOException if reading the remote sstable fails. Will throw an RTE if local write fails.
 */
public SSTableWriter read(ReadableByteChannel channel) throws IOException
{
    logger.info("reading file from {}, repairedAt = {}", session.peer, repairedAt);
    long totalSize = totalSize();

    Pair<String, String> kscf = Schema.instance.getCF(cfId);
    ColumnFamilyStore cfs = Keyspace.open(kscf.left).getColumnFamilyStore(kscf.right);

    SSTableWriter writer = createWriter(cfs, totalSize, repairedAt);
    DataInputStream dis = new DataInputStream(new LZFInputStream(Channels.newInputStream(channel)));
    BytesReadTracker in = new BytesReadTracker(dis);
    try
    {
        while (in.getBytesRead() < totalSize)
        {
            writeRow(writer, in, cfs);
            // TODO move this to BytesReadTracker
            session.progress(desc, ProgressInfo.Direction.IN, in.getBytesRead(), totalSize);
        }
        return writer;
    }
    catch (Throwable e)
    {
        writer.abort();
        drain(dis, in.getBytesRead());
        if (e instanceof IOException)
            throw (IOException) e;
        else
            throw Throwables.propagate(e);
    }
}
 

import org.apache.cassandra.utils.BytesReadTracker; //导入依赖的package包/类
/**
 * @return SSTable transferred
 * @throws java.io.IOException if reading the remote sstable fails. Will throw an RTE if local write fails.
 */
@Override
public SSTableWriter read(ReadableByteChannel channel) throws IOException
{
    logger.debug("reading file from {}, repairedAt = {}", session.peer, repairedAt);
    long totalSize = totalSize();

    Pair<String, String> kscf = Schema.instance.getCF(cfId);
    if (kscf == null)
    {
        // schema was dropped during streaming
        throw new IOException("CF " + cfId + " was dropped during streaming");
    }
    ColumnFamilyStore cfs = Keyspace.open(kscf.left).getColumnFamilyStore(kscf.right);

    SSTableWriter writer = createWriter(cfs, totalSize, repairedAt);

    CompressedInputStream cis = new CompressedInputStream(Channels.newInputStream(channel), compressionInfo, inputVersion.hasPostCompressionAdlerChecksums);
    BytesReadTracker in = new BytesReadTracker(new DataInputStream(cis));
    try
    {
        for (Pair<Long, Long> section : sections)
        {
            long length = section.right - section.left;
            // skip to beginning of section inside chunk
            cis.position(section.left);
            in.reset(0);
            while (in.getBytesRead() < length)
            {
                writeRow(writer, in, cfs);
                // when compressed, report total bytes of compressed chunks read since remoteFile.size is the sum of chunks transferred
                session.progress(desc, ProgressInfo.Direction.IN, cis.getTotalCompressedBytesRead(), totalSize);
            }
        }
        return writer;
    }
    catch (Throwable e)
    {
        writer.abort();
        drain(cis, in.getBytesRead());
        if (e instanceof IOException)
            throw (IOException) e;
        else
            throw Throwables.propagate(e);
    }
}
 

import org.apache.cassandra.utils.BytesReadTracker; //导入依赖的package包/类
/**
 * @return SSTable transferred
 * @throws java.io.IOException if reading the remote sstable fails. Will throw an RTE if local write fails.
 */
@Override
public SSTableWriter read(ReadableByteChannel channel) throws IOException
{
    logger.info("reading file from {}, repairedAt = {}", session.peer, repairedAt);
    long totalSize = totalSize();

    Pair<String, String> kscf = Schema.instance.getCF(cfId);
    ColumnFamilyStore cfs = Keyspace.open(kscf.left).getColumnFamilyStore(kscf.right);

    SSTableWriter writer = createWriter(cfs, totalSize, repairedAt);

    CompressedInputStream cis = new CompressedInputStream(Channels.newInputStream(channel), compressionInfo, inputVersion.hasPostCompressionAdlerChecksums);
    BytesReadTracker in = new BytesReadTracker(new DataInputStream(cis));
    try
    {
        for (Pair<Long, Long> section : sections)
        {
            long length = section.right - section.left;
            // skip to beginning of section inside chunk
            cis.position(section.left);
            in.reset(0);
            while (in.getBytesRead() < length)
            {
                writeRow(writer, in, cfs);
                // when compressed, report total bytes of compressed chunks read since remoteFile.size is the sum of chunks transferred
                session.progress(desc, ProgressInfo.Direction.IN, cis.getTotalCompressedBytesRead(), totalSize);
            }
        }
        return writer;
    }
    catch (Throwable e)
    {
        writer.abort();
        drain(cis, in.getBytesRead());
        if (e instanceof IOException)
            throw (IOException) e;
        else
            throw Throwables.propagate(e);
    }
}