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https://issues.apache.org/jira/browse/KAFKA-9917?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Igor Baltiyskiy updated KAFKA-9917:
-----------------------------------
Component/s: consumer
> Consumer not assigned any partitions in group after broker restart
> ------------------------------------------------------------------
>
> Key: KAFKA-9917
> URL: https://issues.apache.org/jira/browse/KAFKA-9917
> Project: Kafka
> Issue Type: Bug
> Components: consumer
> Affects Versions: 2.1.1
> Environment: Image
> solsson/kafka:2.1.1@sha256:8bc8242c649c395ab79d76cc83b1052e63b4efea7f83547bf11eb3ef5ea6f8e1
> deployed in Kubernetes v 1.12.7 (minikube v1.4.0)
> 1 broker
> Reporter: Igor Baltiyskiy
> Priority: Major
> Attachments: app-logs.truncated.txt, kafka-logs.2.txt
>
>
> I've only reproduced it once for now, so I don't have a ready reproduction
> sequence.
> I was trying to reproduce KAFKA-9912, as advised, and kept restarting Kafka
> (via {{kubectl scale --replicas 0 / 1}}). At some point my application
> entered the state where there is an active KafkaConsumer in a group ID, but
> it is not assigned any partitions, although the broker is functional.
> {code:java}
> bin/kafka-consumer-groups.sh --bootstrap-server kafka:9092 --describe
> --group tfp-9
> Consumer group 'tfp-9' has no active members.TOPIC PARTITION
> CURRENT-OFFSET LOG-END-OFFSET LAG CONSUMER-ID HOST
> CLIENT-ID
> increasing-topic-0 0 270574 500000 229426
> - - - {code}
> {code:java}
> bin/kafka-console-consumer.sh --bootstrap-server kafka:9092 --topic
> increasing-topic-0 --partition 0 --offset 270574 --max-messages 5
> 270575
> 270576
> 270577
> 270578
> 270579
> Processed a total of 5 messages{code}
> The app is active, I can see that {{KafkaConsumer}} is actively polling the
> broker. App logs are full of "Resuming partitions []" and "Pausing partitions
> []" messages.
> I'm attaching broker and application logs (without "Resuming|Pausing
> partitions []" messages, also truncated from the beginning so that they start
> just before the broker is started).
>
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