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Andrew Olson commented on KAFKA-417: ------------------------------------ We see this NPE logged numerous times when running our Kafka integration tests. We're using 0.8.0-beta1. {code} 2013-10-10 14:13:08,601 [testKafkaNotification_ipfacecobld14.northamerica.net-1381432385832-593508da_watcher_executor] ERROR kafka.consumer.ZookeeperConsumerConnector - [testKafkaNotification_ipfacecobld14.northamerica.net-1381432385832-593508da], error during syncedRebalance java.lang.NullPointerException at kafka.utils.ZkUtils$.getChildrenParentMayNotExist(ZkUtils.scala:433) at kafka.utils.ZkUtils$.getCluster(ZkUtils.scala:451) at kafka.consumer.ZookeeperConsumerConnector$ZKRebalancerListener$$anonfun$syncedRebalance$1.apply$mcVI$sp(ZookeeperConsumerConnector.scala:372) at scala.collection.immutable.Range$ByOne$class.foreach$mVc$sp(Range.scala:282) at scala.collection.immutable.Range$$anon$2.foreach$mVc$sp(Range.scala:265) at kafka.consumer.ZookeeperConsumerConnector$ZKRebalancerListener.syncedRebalance(ZookeeperConsumerConnector.scala:369) at kafka.consumer.ZookeeperConsumerConnector$ZKRebalancerListener$$anon$1.run(ZookeeperConsumerConnector.scala:326) {code} > NullPointerException in ZookeeperConsumerConnector > -------------------------------------------------- > > Key: KAFKA-417 > URL: https://issues.apache.org/jira/browse/KAFKA-417 > Project: Kafka > Issue Type: Bug > Affects Versions: 0.8 > Reporter: Neha Narkhede > Assignee: Jun Rao > > [info] == kafka.integration.LazyInitProducerTest == > [info] Test Starting: > testProduceAndMultiFetch(kafka.integration.LazyInitProducerTest) > [2012-07-25 11:50:26,394] ERROR group1_consumer2 error during syncedRebalance > (kafka.consumer.ZookeeperConsumerConnector:99) > java.lang.NullPointerException > at > kafka.utils.ZkUtils$.getChildrenParentMayNotExist(ZkUtils.scala:371) > at kafka.utils.ZkUtils$.getCluster(ZkUtils.scala:389) > at > kafka.consumer.ZookeeperConsumerConnector$ZKRebalancerListener$$anonfun$syncedRebalance$1.apply$mcVI$sp(ZookeeperConsumerConnector.scala > :444) > at > scala.collection.immutable.Range$ByOne$class.foreach$mVc$sp(Range.scala:282) > at > scala.collection.immutable.Range$$anon$2.foreach$mVc$sp(Range.scala:265) > at > kafka.consumer.ZookeeperConsumerConnector$ZKRebalancerListener.syncedRebalance(ZookeeperConsumerConnector.scala:441) > at > kafka.consumer.ZookeeperConsumerConnector$ZKRebalancerListener$$anon$1.run(ZookeeperConsumerConnector.scala:398) -- This message was sent by Atlassian JIRA (v6.1#6144)