public byte[] serializeBatch(BatchTuple batch) {
if (batch == null || batch.currBatchSize() == 0) return null;
_kryoOut.clear();
for (Tuple tuple : batch.getTuples()) {
/*
* byte structure:
* 1st tuple: length + tuple bytes
* 2nd tuple: length + tuple bytes
* ......
*/
int startPos = _kryoOut.position();
// Set initial value of tuple length, which will be updated accordingly after serialization
_kryoOut.writeInt(0);
serializeTuple(_kryoOut, tuple);
// Update the tuple length
int endPos = _kryoOut.position();
_kryoOut.setPosition(startPos);
_kryoOut.writeInt(endPos - startPos - 4);
_kryoOut.setPosition(endPos);
}
return _kryoOut.toBytes();
}
