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From Grant Henke <ghe...@cloudera.com>
Subject Re: Decomissioning a broker
Date Wed, 05 Aug 2015 00:55:19 GMT
Thats correct. Thanks for catching that.

On Tue, Aug 4, 2015 at 3:27 PM, Andrew Otto <aotto@wikimedia.org> wrote:

> Thanks!
>
> > In fact if you use a "Controlled Shutdown" migrating the replicas and
> > leaders should happen for you as well.
>
> Just to clarify, controlled shutdown will only move the leaders to other
> replicas, right?  It won’t actually migrate any replicas elsewhere.
>
> -Ao
>
>
> > On Aug 4, 2015, at 13:00, Grant Henke <ghenke@cloudera.com> wrote:
> >
> > The broker will actually unregister itself from zookeeper. The brokers id
> > path uses ephemeral nodes so they are automatically destroyed on
> shutdown.
> > In fact if you use a "Controlled Shutdown" migrating the replicas and
> > leaders should happen for you as well. Though, manual reassignment may be
> > preferred in your case.
> >
> > Here is some extra information on controlled shutdowns:
> > http://kafka.apache.org/documentation.html#basic_ops_restarting
> >
> > Thanks,
> > Grant
> >
> > On Thu, Jul 30, 2015 at 4:37 PM, Andrew Otto <aotto@wikimedia.org>
> wrote:
> >
> >> I’m sure this has been asked before, but I can’t seem to find the
> answer.
> >>
> >> I’m planning a Kafka cluster expansion and upgrade to 0.8.2.1.  In doing
> >> so, I will be decommissioning a broker.  I plan to remove this broker
> fully
> >> from the cluster, and then reinstall it and use it for a different
> purpose.
> >>
> >> I understand how to use the reassign-partitions tool to generate new
> >> partition assignments and to move partitions around so that the target
> >> broker no longer has any active replicas.  Once that is done, is there
> >> anything special that needs to happen?  I can shutdown the broker, but
> as
> >> far as I know that broker will still be registered in Zookeeper.
> Should I
> >> just delete the znode for that broker once it has been shut down?
> >>
> >> Thanks!
> >> -Andrew Otto
> >>
> >>
> >
> >
> > --
> > Grant Henke
> > Software Engineer | Cloudera
> > grant@cloudera.com | twitter.com/gchenke | linkedin.com/in/granthenke
>
>


-- 
Grant Henke
Software Engineer | Cloudera
grant@cloudera.com | twitter.com/gchenke | linkedin.com/in/granthenke

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