Patrik Kleindl created KAFKA-8838:
-------------------------------------
Summary: Allow consumer group tool to work with non-existing
consumer groups
Key: KAFKA-8838
URL: https://issues.apache.org/jira/browse/KAFKA-8838
Project: Kafka
Issue Type: Improvement
Components: tools
Reporter: Patrik Kleindl
The streams application reset tool works for non-existing consumer groups and
allows to "pre-set" offsets before a new deployment.
The consumer group tool does not allow the same which would be a nice
enhancement.
If this should work and the NullPointerException is not expected this can be
converted to a bug.
{code:java}
./kafka-consumer-groups --bootstrap-server broker:9092 --group applicationId
--reset-offsets --by-duration P60D --topic topic1 --executeError: Executing
consumer group command failed due to nulljava.lang.NullPointerException at
scala.collection.convert.Wrappers$JListWrapper.iterator(Wrappers.scala:88) at
scala.collection.IterableLike$class.foreach(IterableLike.scala:72) at
scala.collection.AbstractIterable.foreach(Iterable.scala:54) at
scala.collection.TraversableLike$class.map(TraversableLike.scala:234) at
scala.collection.AbstractTraversable.map(Traversable.scala:104) at
kafka.admin.ConsumerGroupCommand$ConsumerGroupService$$anonfun$parseTopicPartitionsToReset$1.apply(ConsumerGroupCommand.scala:477)
at
kafka.admin.ConsumerGroupCommand$ConsumerGroupService$$anonfun$parseTopicPartitionsToReset$1.apply(ConsumerGroupCommand.scala:471)
at
scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:241)
at
scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:241)
at scala.collection.Iterator$class.foreach(Iterator.scala:891) at
scala.collection.AbstractIterator.foreach(Iterator.scala:1334) at
scala.collection.IterableLike$class.foreach(IterableLike.scala:72) at
scala.collection.AbstractIterable.foreach(Iterable.scala:54) at
scala.collection.TraversableLike$class.flatMap(TraversableLike.scala:241) at
scala.collection.AbstractTraversable.flatMap(Traversable.scala:104) at
kafka.admin.ConsumerGroupCommand$ConsumerGroupService.parseTopicPartitionsToReset(ConsumerGroupCommand.scala:471)
at
kafka.admin.ConsumerGroupCommand$ConsumerGroupService.getPartitionsToReset(ConsumerGroupCommand.scala:486)
at
kafka.admin.ConsumerGroupCommand$ConsumerGroupService.resetOffsets(ConsumerGroupCommand.scala:310)
at kafka.admin.ConsumerGroupCommand$.main(ConsumerGroupCommand.scala:64) at
kafka.admin.ConsumerGroupCommand.main(ConsumerGroupCommand.scala){code}
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