In our case, two brokers were offline. When the first broker was offline, that would trigger a rebalance. When the second broker was offline, if the consumers were in the process of rebalance, what do we expect? Is the second rebalance request queued?
Regards, Libo -----Original Message----- From: Guozhang Wang [mailto:wangg...@gmail.com] Sent: Friday, February 14, 2014 7:33 PM To: users@kafka.apache.org Subject: Re: broker offline Hello Libo, When ZK resumes from a soft failure, like a GC, it will mark the ephemeral nodes as session timed out, and the brokers will try to re-register upon receiving the session timeout. You can re-produce this issue by signal pause the ZK process. Guozhang On Fri, Feb 14, 2014 at 12:15 PM, Yu, Libo <libo...@citi.com> wrote: > Hi team, > > We have three brokers on our production cluster. I noticed two of them > somehow got offline and then re-registered with zookeeper and got back > online. It seems the issue was caused by some zookeeper issue. So I > want to know what may be the possible cases of the issue. If I want to > reproduce the issue, is there any way to do it? Thanks. > > Regards, > > Libo > > -- -- Guozhang