conf.setProperty(FetcherProperties.DOWNLOAD_BUFFER, 16);
conf.setProperty(FetcherProperties.TEMP_DIR, TMP_DOWNLOAD_DIR);
final AtomicBoolean receivedOk = new AtomicBoolean(false);
HttpFileExchanger exchanger = new HttpFileExchanger(conf, new ReceiveFileCallback() {
@Override
public void onProgress(String tablespace, Integer partition, Long version, File file,
long totalSize, long sizeDownloaded) {
}
@Override