Hi,
No the offsets are not the same. I've printed out the values to see this, and its not the case. On Fri, Jan 10, 2014 at 5:02 PM, Jun Rao <jun...@gmail.com> wrote: > Are the offset used in the 2 fetch requests the same? If so, you will get > the same messages twice. You consumer is responsible for advancing the > offsets after consumption. > > Thanks, > > Jun > > > On Thu, Jan 9, 2014 at 1:00 PM, Gerrit Jansen van Vuuren < > gerrit...@gmail.com> wrote: > > > Hi, > > > > I'm writing a custom consumer for kafka 0.8. > > Everything works except for the following: > > > > a. connect, send fetch, read all results > > b. send fetch > > c. send fetch > > d. send fetch > > e. via the console publisher, publish 2 messages > > f. send fetch :corr-id 1 > > g. read 2 messages published :offsets [10 11] :corr-id 1 > > h. send fetch :corr-id 2 > > i. read 2 messages published :offsets [10 11] :corr-id 2 > > j. send fetch ... > > > > The problem is I get the messages sent twice as a response to two > separate > > fetch requests. The correlation id is distinct so it cannot be that I > read > > the response twice. The offsets of the 2 messages are are the same so > they > > are duplicates, and its not the producer sending the messages twice. > > > > Note: the same connection is kept open the whole time, and I send > > block,receive then send again, after the first 2 messages are read, the > > offsets are incremented and the next fetch will ask kafka to give it > > messages from the new offsets. > > > > any ideas of why kafka would be sending the messages again on the second > > fetch request? > > > > Regards, > > Gerrit > > >
