I would turn on DEBUG on the tool to see which url it reads and doesn't find the owners.
On Tue, Jun 24, 2014 at 11:28 AM, Yury Ruchin <yuri.ruc...@gmail.com> wrote: > I've just double-checked. The URL is correct, the same one is used by Kafka > clients. > > > 2014-06-24 22:21 GMT+04:00 Neha Narkhede <neha.narkh...@gmail.com>: > > > Is it possible that maybe the zookeeper url used for the > > VerifyConsumerRebalance tool is incorrect? > > > > > > On Tue, Jun 24, 2014 at 12:02 AM, Yury Ruchin <yuri.ruc...@gmail.com> > > wrote: > > > > > Hi, > > > > > > I've run into the following problem. I try to read from a 50-partition > > > Kafka topic using high level consumer with 8 streams. I'm using > 8-thread > > > pool, each thread handling one stream. After a short time, the threads > > > reading from the stream stop reading. Lag between topic latest offset > and > > > the consumer constantly increases as new messages come in. > > > > > > I looked into ZK: /consumers/<consumer_name>/owners/<topic_name> and > > see a > > > list of znodes corresponding to the full list of partitions: [1, 2, 3, > > > ...]. When I do zk get on e. g. > > > /consumers/<consumer_name>/owners/<topic_name>/1 - I see a valid > consumer > > > name corresponding to Kafka client logs, e. g. > > > <consumer_name>_<node_name>-1403049600000-abc12345-0. However, when I > run > > > the VerifyConsumerRebalance tool, I see the following: > > > > > > No owner for partition [<topic_name>,1] > > > (kafka.tools.VerifyConsumerRebalance$) > > > > > > No owner for partition [<topic_name>,2] > > > (kafka.tools.VerifyConsumerRebalance$) > > > > > > ... > > > > > > No owner for partition [<topic_name>,50] > > > (kafka.tools.VerifyConsumerRebalance$) > > > > > > According to this output, no partition has owner, which seemingly > > > contradicts to what I see in ZK. > > > > > > What would cause such a problem and how can I troubleshoot it further? > > > > > > Thanks! > > > > > >
