thank you Guozhang,;i don't know why the isr==null and i can't reappear it, all brokers are working,and add new topic succesfully. Thanks， Lax
> Date: Tue, 8 Jul 2014 11:29:05 -0700 > Subject: Re: How recover leader when broker restart > From: wangg...@gmail.com > To: users@kafka.apache.org > > Lax, > > Under that scenario you would better first fix the issue of isr==null by > checking if anything went wrong on the brokers. > > Guozhang > > > On Mon, Jul 7, 2014 at 8:43 PM, chenlax <lax...@hotmail.com> wrote: > > > use preferred tool can rebalance leadership,but if the isr are null then > > the leader is only -1,how i can recover the leader. > > > > > > Thanks， > > Lax > > > > > > > Date: Mon, 7 Jul 2014 08:06:16 -0700 > > > Subject: Re: How recover leader when broker restart > > > From: wangg...@gmail.com > > > To: users@kafka.apache.org > > > > > > You can use the preferred leader election tool to move the leadership. > > > > > > > > https://cwiki.apache.org/confluence/display/KAFKA/Replication+tools#Replicationtools-2.PreferredReplicaLeaderElectionTool > > > > > > Guozhang > > > > > > > > > On Mon, Jul 7, 2014 at 7:56 AM, 鞠大升 <dashen...@gmail.com> wrote: > > > > > > > you can use the preferred leader election tool to reset leaders to > > > > preferred replicas. > > > > 2014年7月7日 PM10:37于 "François Langelier" <f.langel...@gmail.com>写道： > > > > > > > > > AFAIK, the simplest way will be to shutdown your 2 others brokers > > after > > > > you > > > > > restarted your broker 1, which will force your topics to have your > > > > broker 1 > > > > > as leader since it's the only one available, and then restart your > > > > brokers > > > > > 2 and 3 > > > > > > > > > > But I can't really see why you want your leaders on broker 1... > > > > > > > > > > > > > > > > > > > > François Langelier > > > > > Étudiant en génie Logiciel - École de Technologie Supérieure > > > > > <http://www.etsmtl.ca/> > > > > > Capitaine Club Capra <http://capra.etsmtl.ca/> > > > > > VP-Communication - CS Games <http://csgames.org> 2014 > > > > > Jeux de Génie <http://www.jdgets.com/> 2011 à 2014 > > > > > Argentier Fraternité du Piranha <http://fraternitedupiranha.com/> > > > > > 2012-2014 > > > > > Comité Organisateur Olympiades ÉTS 2012 > > > > > Compétition Québécoise d'Ingénierie 2012 - Compétition Senior > > > > > > > > > > > > > > > On 7 July 2014 05:59, 陈翔 <lax...@hotmail.com> wrote: > > > > > > > > > > > i have 3 broker,when i restart a broker 1,then 1 can not as > > leader.i > > > > want > > > > > > to know how i can recover broker 1 as a leader. > > > > > > > > > > > > thanks, > > > > > > lax > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > -- Guozhang > > > > > > > > -- > -- Guozhang
