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https://issues.apache.org/jira/browse/KAFKA-3828?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15327513#comment-15327513
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Joseph Aliase commented on KAFKA-3828:
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Sure will test and let you know
> Consumer thread stalls after consumer re balance for some partition
> --------------------------------------------------------------------
>
> Key: KAFKA-3828
> URL: https://issues.apache.org/jira/browse/KAFKA-3828
> Project: Kafka
> Issue Type: Bug
> Components: consumer
> Environment: Operating System : CentOS release 6.4
> Kafka Cluster: Stand alone cluster with one broker and one zookeeper.
> Reporter: Joseph Aliase
> Assignee: Neha Narkhede
>
> In process of testing the new Kafka Consumer API we came across this issue.
> We started single broker Kafka Cluster with broker listening on port 9092 and
> zookeeper on 2181.
> We created a topic test with partition 6. We started a consumer with below
> configuration:
> bootstrap.servers= host-name:9092
> group.id=consumer-group
> key.deserializer=StringDeserializer.class.getName()
> value.deserializer=StringDeserializer.class.getName()
> session.timeout.ms=30000
> heartbeat.interval.ms=10000
> We started producing data into topic test:
> sh kafka-producer-perf-test.sh --topic test --num-records 1000000
> --record-size 10 --throughput 500 --producer-props
> bootstrap.servers=localhost:9092
> Consumer instance is started with 6 threads to consume data from 6 partition.
> We then restart another consumer instance with 6 threads. Consumer re-balance
> occurs and 6 partitions is divided equally among this two instance.
> Then we start another consumer instance with 6 threads again we could see
> re-balance occurring with partition getting divided among three consumer
> instance. Everything works well.
> Then if we stop one consumer instance and partitions get re-balanced between
> two instance.
> If we stop and restart the another running instances and repeat the steps for
> few time we could see the issue occurring where we could see Consumer is
> holding the partition's but not consuming any data from that partition.
> Partition data remain unconsumed until we stop the consumer instance which is
> holding the partition.
> We were not able to reproduce this issue we publish data to topic at very low
> rate however issue could be easily reproduced when data is being published at
> high rate.
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