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Ted Yu commented on KAFKA-7170: ------------------------------- Can you provide a bit more information: release of Kafka, etc. If you can describe sequence of events leading to the NPE, that would be easier to investigate. > NPE in ConsumerGroupCommand when describe consumer group > -------------------------------------------------------- > > Key: KAFKA-7170 > URL: https://issues.apache.org/jira/browse/KAFKA-7170 > Project: Kafka > Issue Type: Bug > Reporter: Yuanjin Xu > Priority: Major > > Got the following error when runĀ kafka-consumer-groups to describe a consumer > group. > {code:java} > Error: Executing consumer group command failed due to null > [2018-07-16 20:05:21,353] DEBUG Exception in consumer group command > (kafka.admin.ConsumerGroupCommand$) > java.lang.NullPointerException > at scala.Predef$.Long2long(Predef.scala:363) > at > kafka.admin.ConsumerGroupCommand$KafkaConsumerGroupService$$anonfun$getLogEndOffsets$2.apply(ConsumerGroupCommand.scala:612) > at > kafka.admin.ConsumerGroupCommand$KafkaConsumerGroupService$$anonfun$getLogEndOffsets$2.apply(ConsumerGroupCommand.scala:610) > at > scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) > at > scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) > at scala.collection.immutable.List.foreach(List.scala:392) > at scala.collection.TraversableLike$class.map(TraversableLike.scala:234) > at scala.collection.immutable.List.map(List.scala:296) > at > kafka.admin.ConsumerGroupCommand$KafkaConsumerGroupService.getLogEndOffsets(ConsumerGroupCommand.scala:610) > at > kafka.admin.ConsumerGroupCommand$ConsumerGroupService$class.describePartitions(ConsumerGroupCommand.scala:328) > at > kafka.admin.ConsumerGroupCommand$ConsumerGroupService$class.collectConsumerAssignment(ConsumerGroupCommand.scala:308) > at > kafka.admin.ConsumerGroupCommand$KafkaConsumerGroupService.collectConsumerAssignment(ConsumerGroupCommand.scala:544) > at > kafka.admin.ConsumerGroupCommand$KafkaConsumerGroupService$$anonfun$10$$anonfun$13.apply(ConsumerGroupCommand.scala:571) > at > kafka.admin.ConsumerGroupCommand$KafkaConsumerGroupService$$anonfun$10$$anonfun$13.apply(ConsumerGroupCommand.scala:565) > at scala.collection.immutable.List.flatMap(List.scala:338) > at > kafka.admin.ConsumerGroupCommand$KafkaConsumerGroupService$$anonfun$10.apply(ConsumerGroupCommand.scala:565) > at > kafka.admin.ConsumerGroupCommand$KafkaConsumerGroupService$$anonfun$10.apply(ConsumerGroupCommand.scala:558) > at scala.Option.map(Option.scala:146) > at > kafka.admin.ConsumerGroupCommand$KafkaConsumerGroupService.collectGroupOffsets(ConsumerGroupCommand.scala:558) > at > kafka.admin.ConsumerGroupCommand$ConsumerGroupService$class.describeGroup(ConsumerGroupCommand.scala:271) > at > kafka.admin.ConsumerGroupCommand$KafkaConsumerGroupService.describeGroup(ConsumerGroupCommand.scala:544) > at kafka.admin.ConsumerGroupCommand$.main(ConsumerGroupCommand.scala:77) > at kafka.admin.ConsumerGroupCommand.main(ConsumerGroupCommand.scala){code} -- This message was sent by Atlassian JIRA (v7.6.3#76005)