ZK paths for 0.8 are documented in https://cwiki.apache.org/confluence/display/KAFKA/Kafka+data+structures+in+Zookeeper
If a controller fails, any live broker can become the leader. This is coordinated through an ephemeral path in ZK. Thanks, Jun On Fri, Aug 23, 2013 at 3:37 AM, James Wu <jameswu...@gmail.com> wrote: > Thank you Neha, it's very helpful information! > > I also read this article > > http://engineering.linkedin.com/kafka/intra-cluster-replication-apache-kafka > For the section "Handling Failures", I am wondering some questions: > > 1. "The leader and the ISR for each partition are also stored in Zookeeper > and are used during the failover of the controller." What path does it be > stored ? Is there any way to see the information on zookeeper ? > > 2. If the controller fail, how does the new controller be elected ? Does it > be elected by Zookeeper ? How does Zookeeper decide which node should be > the controller ? > > Many thanks! > > > > > On Fri, Aug 23, 2013 at 11:59 AM, Neha Narkhede <neha.narkh...@gmail.com > >wrote: > > > The replication state machine and leader election mechanism is described > > here - http://kafka.apache.org/documentation.html#replication > > > > Let us know how the docs can be improved. > > > > Thanks, > > Neha > > > > > > On Thu, Aug 22, 2013 at 8:51 PM, James Wu <jameswu...@gmail.com> wrote: > > > > > Hi, > > > > > > I am wondering what is the mechanism that Kafka elects the leader of > > > partitions ? > > > > > > Does it handle by the controller process or ? > > > If the leader crashed, who will decide the new leader ? and the process > > is > > > running on Zookeeper or Kafka? > > > > > > > > > Thanks. > > > > > > -- > > > -- > > > Friendly regards, > > > > > > *James Wu <http://www.facebook.com/jameswu629>* > > > > > > > > > -- > > Friendly regards, > > *James Wu <https://plus.google.com/u/0/100829801349304669533> > * >
