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Posted to jira@kafka.apache.org by "Mickael Maison (Jira)" <ji...@apache.org> on 2026/04/09 13:25:00 UTC

[jira] [Commented] (KAFKA-20000) Optimize retry backoff for CONCURRENT_TRANSACTIONS to improve TV2 throughput

    [ https://issues.apache.org/jira/browse/KAFKA-20000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18072290#comment-18072290 ] 

Mickael Maison commented on KAFKA-20000:
----------------------------------------

Moving to the next release as we're now in code freeze for 4.3.0.

> Optimize retry backoff for CONCURRENT_TRANSACTIONS to improve TV2 throughput
> ----------------------------------------------------------------------------
>
>                 Key: KAFKA-20000
>                 URL: https://issues.apache.org/jira/browse/KAFKA-20000
>             Project: Kafka
>          Issue Type: Improvement
>            Reporter: Chia-Ping Tsai
>            Assignee: Francis Godinho
>            Priority: Major
>             Fix For: 4.3.0
>
>
> Transaction V2 introduces frequent state transitions (epoch bumps) that briefly reject concurrent requests with CONCURRENT_TRANSACTIONS. The default client retry backoff (100ms) is excessive for these transient locks, leading to unnecessary latency and degraded throughput. Reducing the backoff allows faster retries and smoother performance during state transitions.



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