Is there a way to share an opaque state across topologies ?

[Laurent Thoulon <la...@ldmobile.net>]

Hi , 

I've completly reworked one of my topologies so that it reads from only one aggregated spout instead of three spouts. The final operation is still the same though: persistentAggregate-sum the data to cassandra. 
I'm using a KafkaSpout and a CassandraMap both in an opaque way. Now can my old topology and my new topology run at the same time and upgrade the same state ? 

For what i understood i'm afraid the answer will be no as there will be a problem having two separate txids. 

This leads me to an other question: if i just replace my old topology with the new one, does having changed the spouts will change the txid and again make the opaque state update faulty ? 


Regards , 
Laurent