Hi, I have 2 Kafka Connect instances runs in 2 boxes which forms a Kafka Connect Cluster. One of the instance seems doing the re-balance repeatedly in a dead loop without running the actual Sink task, the other works fine. The following is the output message in the console.
May I ask if you have ever encountered similar issue before ? Thank you so much ! [2018-03-21 14:53:15,671] WARN Catching up to assignment's config offset. > (org.apache.kafka.connect.runtime.distributed.DistributedHerder:762) > [2018-03-21 14:53:15,671] INFO Current config state offset 119 is behind > group assignment 169, reading to end of config log > (org.apache.kafka.connect.runtime.distributed.DistributedHerder:807) > [2018-03-21 14:53:16,046] INFO Finished reading to end of log and updated > config snapshot, new config log offset: 119 > (org.apache.kafka.connect.runtime.distributed.DistributedHerder:811) > [2018-03-21 14:53:16,046] INFO Current config state offset 119 does not > match group assignment 169. Forcing rebalance. > (org.apache.kafka.connect.runtime.distributed.DistributedHerder:786) > [2018-03-21 14:53:16,046] INFO Rebalance started > (org.apache.kafka.connect.runtime.distributed.DistributedHerder:1214) > [2018-03-21 14:53:16,046] INFO Wasn't unable to resume work after last > rebalance, can skip stopping connectors and tasks > (org.apache.kafka.connect.runtime.distributed.DistributedHerder:1246) > [2018-03-21 14:53:16,046] INFO [Worker clientId=connect-1, > groupId=kafka-connect-NA-sink] (Re-)joining group > (org.apache.kafka.clients.consumer.internals.AbstractCoordinator:336) > [2018-03-21 14:53:16,172] INFO [Worker clientId=connect-1, > groupId=kafka-connect-NA-sink] Successfully joined group with generation 14 > (org.apache.kafka.clients.consumer.internals.AbstractCoordinator:341) > [2018-03-21 14:53:16,173] INFO Joined group and got assignment: > Assignment{error=0, > leader='connect-1-3b12c02b-070e-431b-9ec9-924cffd2b6dc', leaderUrl=' > http://1.1.1.1:8083/', offset=169, connectorIds=[Send_To_NA], > taskIds=[Send_To_NA-1, Send_To_NA-3, Send_To_NA-5, Send_To_NA-7, > Send_To_NA-9, Send_To_NA-11, Send_To_NA-13, Send_To_NA-15, Send_To_NA-17, > Send_To_NA-19, Send_To_NA-21]} > (org.apache.kafka.connect.runtime.distributed.DistributedHerder:1192 -- Regards, Zi-Liang Mail:zlchen....@gmail.com