private void readRow(ResultDiskTape tape) {
int min = Constants.FILE_BLOCK_SIZE;
Data buff = rowBuff;
buff.reset();
file.readFully(buff.getBytes(), 0, min);
int len = buff.readInt();
buff.checkCapacity(len);
if (len - min > 0) {
file.readFully(buff.getBytes(), min, len - min);
}
tape.pos += len;