Multiple produce requests are sent asynchronously over the same socket. Suppose you send 2 requests and get back single response, how do you figure out which one it corresponds to of those 2 requests ? Correlation Id helps here. AFAIK, correlation Id is added to produce requests and broker uses the same id in its response so that the producer can keep track of its requests. Correlation Id also helps in debugging issues as now you can uniquely identify requests across producer and broker logs.
On Mon, Aug 19, 2013 at 11:01 PM, Timothy Chen <tnac...@gmail.com> wrote: > Hi, > > This is probably a very obvious questoin, but I cannot find the answer for > this. > > What does the correlation id mean in a producer request? > > Tim >
