Not sure if I followed the question correctly, but S1 and S2 would be message-sets to different partitions of T - the producer request object contains a map of topic-partition -> messageset). So each partition would get its own ack. The response object is just a map of partition -> response status so the order of acks in the response is the response status map's order.
Joel On Wed, Jul 23, 2014 at 02:09:40PM -0700, Dave Peterson wrote: > Hello, > > I have a question about produce requests and responses. > Suppose I create a produce request consisting of a single topic T > which contains two message sets S1 and S2, with S1 preceding > S2. In other words, the request looks like this: > > ( request header ( T ( S1, S2 ) ) ) > > Is it possible that I may get a response in which the order of > the ACKs for the individual message sets is reversed? In other > words, a response that looks like this: > > ( response header ( T ( ack for S2, ack for S1 ) ) ) > > I know that if a request contains multiple topics, then the topics > may arrive out of order in the response. So I was wondering if > ACKs for individual message sets within a topic can likewise > arrive out of order in the response. > > Thanks, > Dave
