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Posted to jira@kafka.apache.org by "Michael Bingham (Jira)" <ji...@apache.org> on 2020/05/06 23:39:00 UTC
[jira] [Resolved] (KAFKA-9964) Better description of
RoundRobinPartitioner behavior for AK 2.4+
[ https://issues.apache.org/jira/browse/KAFKA-9964?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael Bingham resolved KAFKA-9964.
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Resolution: Invalid
> Better description of RoundRobinPartitioner behavior for AK 2.4+
> ----------------------------------------------------------------
>
> Key: KAFKA-9964
> URL: https://issues.apache.org/jira/browse/KAFKA-9964
> Project: Kafka
> Issue Type: Improvement
> Components: producer
> Affects Versions: 2.4.0, 2.5.0, 2.4.1
> Reporter: Michael Bingham
> Priority: Minor
>
> The Javadocs for {{RoundRobinPartitioner}} currently state:
> {quote}This partitioning strategy can be used when user wants to distribute the writes to all partitions equally
> {quote}
> In AK 2.4+, equal distribution is not guaranteed, even with this partitioner. The enhancements to consider batching made with [https://cwiki.apache.org/confluence/display/KAFKA/KIP-480%3A+Sticky+Partitioner] affect this partitioner as well.
> So it would be useful to add some additional Javadocs to explain that unless batching is disabled, even distribution of records is not guaranteed.
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