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From Neha Narkhede <neha.narkh...@gmail.com>
Subject Re: Replay
Date Fri, 23 Mar 2012 00:02:30 GMT
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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