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From John Wang <john.w...@gmail.com>
Subject Re: Replay
Date Fri, 23 Mar 2012 01:15:19 GMT
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.narkhede@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.wang@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 <elbenshira@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 <junrao@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.Sybrandy@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 [jjkoshy.w@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 <JainK@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
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

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