Failure on altering offsets on AdminClientExample/src/main/java/org/example/AdminClientExample.java

[Zvi Mints]

I'm using the AdminClientExample in order to reset offset for a specific topics as follows:
I'm trying to reset offsets for specific group id as follows:

 // Pause Connectors
    Await.result(k8sService.setPauseToConnectorsAsync(true), Duration.Inf)

    // Get Current Offsets
    val originalState = kafkaService.getCurrentState()

    // Reset Offsets
    kafkaService.resetOffsets(originalState)

when resetOffsets is as follows:

 def resetOffsets(originalState: Map[GroupID, mutable.Map[TopicPartition, OffsetAndMetadata]]): Unit = {
    logger.info(s"resetOffsets(originalState = $originalState) Triggered")
    for ((groupId, partitionsToOffsets) <- originalState) {
      logger.info(s"resetOffsets($groupId) Triggered")
      client.alterConsumerGroupOffsets(groupId, partitionsToOffsets.view.mapValues(_ => new OffsetAndMetadata(0)).toMap.asJava).all().get(config.operationTimeoutInMillis, TimeUnit.MILLISECONDS)
    }
  }

But its fails with

org.apache.kafka.common.errors.UnknownMemberIdException: Failed altering consumer group offsets for the following partitions

Any ideas how to solve it? or how to reset the offsets for specific group.id with other way?

[Hunter Sherman]

@ZviMints what was the solution?

[henrik242]

@HunterSherms @ZviMints I wonder about the same thing. Did you figure it out?

[Martin Mauch]

Same issue...

[henrik242]

There's probably an active consumer running, at least that was my issue. More info at https://stackoverflow.com/a/77011755/13365