John, You can achieve that via the autooffset.reset="largest" config option in the consumer.
Thanks, Neha On Thu, Mar 22, 2012 at 6:15 PM, John Wang <john.w...@gmail.com> wrote: > Hi Neha: > > Can you point me to the api to always get data from tail? > > Thanks > > -John > > On Thu, Mar 22, 2012 at 5:02 PM, Neha Narkhede <neha.narkh...@gmail.com>wrote: > >> Elben, >> >> Or sensei can provide a restart from tail API, that will delete the offset >> state from ZK and restart its Kafka consumer. Currently that is the best >> way to have a Kafka consumer restart fetching latest data. >> >> Thanks, >> Neha >> On Mar 22, 2012 4:39 PM, "John Wang" <john.w...@gmail.com> wrote: >> >> > I think in the newer kafka release, there is a tool to update the version >> > for a client. >> > >> > Jun, can you elaborate on that? >> > >> > Thanks >> > >> > -John >> > >> > On Thu, Mar 22, 2012 at 4:33 PM, Elben Shira <elbensh...@gmail.com> >> wrote: >> > >> > > We're using use kafka+sensei at our company and we'd love to be able to >> > > start at the end of the queue (latest entries). The use case is when >> > sensei >> > > goes down or has to be restarted, we only care about indexing the >> latest >> > > items. >> > > >> > > A workaround I guess is to stop sensei, manually change the high >> > watermark >> > > in kafka, then restart sensei. >> > > >> > > Elben >> > > >> > > >> > > On Thu, Mar 15, 2012 at 11:31 AM, Jun Rao <jun...@gmail.com> wrote: >> > > >> > > > Casey, >> > > > >> > > > You can't get offsets using zk-based consumer now. We are still >> trying >> > to >> > > > figure about how to support that in the future. >> > > > >> > > > Thanks, >> > > > >> > > > Jun >> > > > >> > > > On Thu, Mar 15, 2012 at 7:57 AM, Sybrandy, Casey < >> > > > casey.sybra...@six3systems.com> wrote: >> > > > >> > > > > Hello, >> > > > > >> > > > > Just out of curiosity, how would you get the offsets when using a >> > > > zk-based >> > > > > consumer? I don't see anything that seems to let you do this >> easily. >> > > > > >> > > > > Casey >> > > > > >> > > > > ________________________________________ >> > > > > From: Joel Koshy [jjkosh...@gmail.com] >> > > > > Sent: Monday, March 12, 2012 5:51 PM >> > > > > To: kafka-users@incubator.apache.org >> > > > > Subject: Re: Replay >> > > > > >> > > > > With simple consumer, you can start from any valid offset that you >> > keep >> > > > > track off. >> > > > > >> > > > > With the high level (zk-based) consumer: you will need to stop all >> > > > > consumers, and then update the offsets in zookeeper (see the >> > > > > ImportZkOffsets tool in the tools package) with the offsets you >> want >> > to >> > > > > replay from before restarting your consumer. >> > > > > >> > > > > Thanks, >> > > > > >> > > > > Joel >> > > > > >> > > > > On Mon, Mar 12, 2012 at 12:09 PM, Jain, Kokil <ja...@bit-sys.com> >> > > wrote: >> > > > > >> > > > > > Hi, >> > > > > > >> > > > > > Sorry, new to Kafka. Is it possible for a consumer to replay >> > messages >> > > > > from >> > > > > > an "offset" that may have been committed before? >> > > > > > >> > > > > > Thanks for the help, >> > > > > > Kokil Jain >> > > > > > >> > > > > > >> > > > > >> > > > >> > > >> > >>
