How to use

org.apache.hadoop.hdfs.server.datanode.fsdataset.ReplicaOutputStreams

constructor

  crcOut.getChannel().position(crcDiskSize);
 return new ReplicaOutputStreams(blockOut, crcOut, checksum,
   getVolume(), fileIoProvider);
} catch (IOException e) {

@Override
public ReplicaOutputStreams createStreams(boolean isCreate,
  DataChecksum requestedChecksum) throws IOException {
 return new ReplicaOutputStreams(null, null, requestedChecksum, false);
}

@Override
synchronized public ReplicaOutputStreams createStreams(boolean isCreate,
  DataChecksum requestedChecksum) throws IOException {
 if (finalized) {
  throw new IOException("Trying to write to a finalized replica "
    + theBlock);
 } else {
  SimulatedOutputStream crcStream = new SimulatedOutputStream();
  return new ReplicaOutputStreams(oStream, crcStream, requestedChecksum,
    getStorage(theBlock).getVolume().isTransientStorage());
 }
}

@Override
synchronized public ReplicaOutputStreams createStreams(boolean isCreate, 
  DataChecksum requestedChecksum) throws IOException {
 if (finalized) {
  throw new IOException("Trying to write to a finalized replica "
    + theBlock);
 } else {
  SimulatedOutputStream crcStream = new SimulatedOutputStream();
  return new ReplicaOutputStreams(oStream, crcStream, requestedChecksum,
    volume.isTransientStorage());
 }
}

  crcOut.getChannel().position(crcDiskSize);
 return new ReplicaOutputStreams(blockOut, crcOut, checksum,
   getVolume().isTransientStorage());
} catch (IOException e) {

  crcOut.getChannel().position(crcDiskSize);
 return new ReplicaOutputStreams(blockOut, crcOut, checksum,
   getVolume().isTransientStorage());
} catch (IOException e) {