Yes exactly. If consumer 1 gets message with offset 17 then it can write that offset into an external storage that consumer 2 can also check to ensure that it keeps in sync with consumer 1.
Just curious though why you would need to do this? What is the use case because there may be a better way to get you the functionality you want? -hans > On Nov 5, 2016, at 4:31 PM, kant kodali <kanth...@gmail.com> wrote: > > I am new to Kafka and reading this statement "write consumer 1 and consumer > 2 to share a common external offset storage" I can interpret it many ways > but my best guess is as follows. > > Are you saying write the current offset of each consumer to a common > external storage? > > > On Sat, Nov 5, 2016 at 4:15 PM, kant kodali <kanth...@gmail.com> wrote: > >> Hi Hans, >> >> What do you mean by "write consumer 1 and consumer 2 to share a common >> external offset storage" ? can you please elaborate a bit more. >> >> Thanks! >> >> On Sat, Nov 5, 2016 at 4:00 PM, Hans Jespersen <h...@confluent.io> wrote: >> >>> There is no built in mechanism to do this in Apache Kafka but if you can >>> write consumer 1 and consumer 2 to share a common external offset storage >>> then you may be able to build the functionality you seek. >>> >>> -hans >>> >>> >>> >>>> On Nov 5, 2016, at 3:55 PM, kant kodali <kanth...@gmail.com> wrote: >>>> >>>> Sorry there is a typo. here is a restatement. >>>> >>>> Is there a way to make sure two consumers receive the same message from >>> the >>>> kafka broker in a atomic way? such that if consumer 1 gets a message >>>> consumer 2 should also get that message and if consumer 1 fails for >>>> whatever reason consumer 2 should also rollback to previous offset (to >>> the >>>> same offset as consumer 1) or invalidate or something like that. is that >>>> possible? >>> >>> >>
