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From tao xiao <xiaotao...@gmail.com>
Subject Re: Specify leader when doing partition reassignment
Date Wed, 05 Aug 2015 10:37:35 GMT
I think I figured it out. As pointed out in
https://cwiki.apache.org/confluence/display/KAFKA/Replication+tools#Replicationtools-6.ReassignPartitionsTool

If the leader is not in the reassigned replica a new leader will be elected
and the tool doesn't pick the first one from the RAR as the leader

On Wed, 5 Aug 2015 at 18:32 Jilin Xie <jilinxie1988@gmail.com> wrote:

> Check the --replica-assignment  parameter of the kafka-topics.sh.
> It does what you need.
> And there should also be similar configs in the api if you wanna do so by
> coding.
>
> On Wed, Aug 5, 2015 at 6:18 PM, tao xiao <xiaotao183@gmail.com> wrote:
>
> > Hi team,
> >
> > Is it possible to specify a leader broker for each topic partition when
> > doing partition reassignment?
> >
> > For example I have following json. Is the first broker in the replicas
> list
> > by default the leader of the partition e.g. broker 3 is the leader of
> topic
> > test5 and broker 2 is the leader of topic test3. or does Kafka
> > automatically pick the leader based on the leadership ratio
> > if auto.leader.rebalance.enable is on
> >
> > {
> >   "version": 1,
> >   "partitions": [
> >     {
> >       "topic": "test5",
> >       "partition": 0,
> >       "replicas": [3, 1]
> >     },
> >     {
> >       "topic": "test3",
> >       "partition": 0,
> >       "replicas": [2,3]
> >     },
> >     {
> >       "topic": "test1",
> >       "partition": 0,
> >       "replicas": [1,2]
> >     }
> >   ]
> > }
> >
>

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