[rabbitmq-discuss] Consuming ack transactional without txCommit() ?

[John Smith]

What does it mean that the ack is transacted on consuming side, but not the read.
 
I do get the fact that I can not write a rollback.  What I do not understand is what it means that the ack is trasactional.  
 
Does tis mean the act will not complete until the server deletes the message, and therefore the rollback is no longer permitted ?
 
In the examples, I do not see a txCommmit() on the consuming side.  
 
Do I have to put a txCommit (and txselect) on the consuming side in order to have the ack be transactional ?
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