public boolean getNext(KafkaETLKey key, BytesWritable value) throws IOException {
if (!hasMore()) return false;
boolean gotNext = get(key, value);
Iterator<ByteBufferMessageSet> iter = _response.iterator();
while (!gotNext && _response != null && iter.hasNext()) {
ByteBufferMessageSet msgSet = iter.next();
if (hasError(msgSet)) return false;
_messageIt = (Iterator<Message>) msgSet.iterator();
gotNext = get(key, value);
}
return gotNext;
}
public boolean hasMore() {
return _messageIt != null && _messageIt.hasNext()
|| _response != null && _response.iterator().hasNext()
|| _offset < _offsetRange[1];
}