This question seems to come up often - added this to the FAQ.

https://cwiki.apache.org/confluence/display/KAFKA/FAQ#FAQ-Idon%27twantmyconsumer%27soffsetstobecommittedautomatically.CanImanuallymanagemyconsumer%27soffsets%3F

On Tue, Nov 05, 2013 at 04:02:09PM +0000, Roman Garcia wrote:
> Thanks Neha! I guess auto-commit it is for now...
> 
> 
> On Tue, Nov 5, 2013 at 5:08 AM, Neha Narkhede <neha.narkh...@gmail.com>wrote:
> 
> > Currently, the only way to achieve that is to use the SimpleConsumer API.
> > We are considering the feature you mentioned for the 0.9 release -
> >
> > https://cwiki.apache.org/confluence/display/KAFKA/Client+Rewrite#ClientRewrite-ConsumerAPI
> >
> > Thanks,
> > Neha
> >
> >
> > On Mon, Nov 4, 2013 at 9:57 AM, Roman Garcia <romangarc...@gmail.com>
> > wrote:
> >
> > > Right Neha, thanks. I was aware of that particular API, but I process
> > > topics within separate threads (actors) so I cannot assume every
> > > topic/partition is supposed to commit its offset. Instead, I could use a
> > > per-stream (topic-partition) commit.
> > > Is this use case valid? Should there be a ticket to implement this?
> > > Regards,
> > > Roman
> > >
> > >
> > > On Mon, Nov 4, 2013 at 1:28 PM, Neha Narkhede <neha.narkh...@gmail.com
> > > >wrote:
> > >
> > > > The API you are looking for is ConsumerConnector.commitOffsets().
> > > However,
> > > > not that it will commit offsets for all partitions that the particular
> > > > consumer connector owns at that time. And the set of partitions owned
> > by
> > > a
> > > > particular consumer connector can change over time.
> > > >
> > > > Thanks,
> > > > Neha
> > > >
> > > >
> > > > On Mon, Nov 4, 2013 at 7:58 AM, Roman Garcia <romangarc...@gmail.com>
> > > > wrote:
> > > >
> > > > > Hi, I'm still using Kafka 0.7, and was wondering if there's a way I
> > can
> > > > > "manually" commit offsets per Topic/Partition.
> > > > >
> > > > > I was expecting something like KafkaMessageStream#commitOffset()
> > > > > I couldn't find an API for this. If there isn't any, is there a
> > reason?
> > > > >
> > > > > Regards,
> > > > > Roman
> > > > >
> > > >
> > >
> >

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