That can happen when shutting down the consumer. Is that the case? Thanks,
Jun On Wed, Jul 10, 2013 at 6:43 PM, Philip O'Toole <phi...@loggly.com> wrote: > Hello -- we're doing some heavy lifting now with our high-level based > consumer. We open a Consumer Connection per partition within the one JVM, > and are using Kafka 0.72. We saw a burst of the exceptions shown below. Is > this something we should be concerned about? Or is this the normal output > from rebalancing, as the consumer starts up? > > Thanks, > > Philip > > 2013-07-10 23:39:37,012 [ERROR] [ZookeeperConsumerConnector.error] > writer_writer0-1373499526097-ec0d4672 error during syncedRebalance > java.lang.NullPointerException > at > kafka.utils.ZkUtils$.getChildrenParentMayNotExist(ZkUtils.scala:181) > at kafka.utils.ZkUtils$.getCluster(ZkUtils.scala:202) > at > > kafka.consumer.ZookeeperConsumerConnector$ZKRebalancerListener$$anonfun$syncedRebalance$1.apply$mcVI$sp(ZookeeperConsumerConnector.scala:447) > at scala.collection.immutable.Range.foreach$mVc$sp(Range.scala:75) > at > > kafka.consumer.ZookeeperConsumerConnector$ZKRebalancerListener.syncedRebalance(ZookeeperConsumerConnector.scala:444) > at > > kafka.consumer.ZookeeperConsumerConnector$ZKRebalancerListener$$anon$1.run(ZookeeperConsumerConnector.scala:401) > 2013-07-10 23:39:37,013 [INFO] [ZookeeperConsumerConnector.info] > writer_writer0-1373499534602-35941a8c begin rebalancing consumer > writer_writer0-1373499534602-35941a8c try #1 >
