We are running Zookeeper version: 3.4.6-1569965, built on 02/20/2014 09:09 GMT, does it have any known problems?
On Fri, Apr 29, 2016 at 2:35 PM, James Brown <[email protected]> wrote: > What version of ZooKeeper are you on? There have been a few bugs over > the years where ZK has lost ephemeral nodes (and spontaneously > de-registered brokers). > > On Fri, Apr 29, 2016 at 11:30 AM, Kane Kim <[email protected]> wrote: > > Any idea why it's happening? I'm sure rolling restart would fix it. Is > it a > > bug? > > > > On Wed, Apr 27, 2016 at 5:42 PM, Kane Kim <[email protected]> wrote: > > > >> Hello, > >> > >> Looks like we are hitting leader election bug. I've stopped one broker > >> (104224873) on other brokers I see following: > >> > >> WARN kafka.controller.ControllerChannelManager - [Channel manager on > >> controller 104224863]: Not sending request Name: StopReplicaRequest; > >> Version: 0; CorrelationId: 843100; ClientId: ; DeletePartitions: false; > >> ControllerId: 104224863; ControllerEpoch: 8; Partitions: [mp-auth,169] > to > >> broker 104224873, since it is offline. > >> > >> Also describing topics returns this: > >> Topic: mp-unknown Partition: 597 Leader: 104224873 Replicas: > >> 104224874,104224873,104224875 Isr: 104224873,104224875 > >> > >> broker 104224873 is shut down, but it's still leader for the partition > (at > >> least for a couple of hours as I monitor it). > >> Zookeeper cluster is healthy. > >> > >> ls /brokers/ids > >> [104224874, 104224875, 104224863, 104224864, 104224871, 104224867, > >> 104224868, 104224865, 104224866, 104224876, 104224877, 104224869, > >> 104224878, 104224879] > >> > >> That broker is not registered in ZK. > >> > > > > -- > James Brown > Engineer >
