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https://issues.apache.org/jira/browse/KAFKA-13322?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Guozhang Wang updated KAFKA-13322:
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    Labels: new-rebalance-should-fix  (was: )

> Java client produces a large amount of garbage during a poll
> ------------------------------------------------------------
>
>                 Key: KAFKA-13322
>                 URL: https://issues.apache.org/jira/browse/KAFKA-13322
>             Project: Kafka
>          Issue Type: Improvement
>          Components: clients
>    Affects Versions: 3.0.0
>            Reporter: Michail
>            Priority: Minor
>              Labels: new-rebalance-should-fix
>
> The java kafka consumer creates multiple collections during a single poll 
> command: in my test system i have a consumer that polls a topic with 100 
> partitions and even though no messages are coming through, the code allocates 
> around 100M per 5 minutes.
>  
> I've investigated the allocations and the biggest ones can be easily avoided 
> by moving them to the instance level, something that can be done as 
> KafkaConsumer is not thread safe. Purpose of this Jira is to get rid of most 
> of them applying either this or a similar approach.



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