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Posted to jira@kafka.apache.org by "Chia-Ping Tsai (Jira)" <ji...@apache.org> on 2025/12/16 19:42:00 UTC

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

Chia-Ping Tsai created KAFKA-20000:
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             Summary: 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: Chia-Ping Tsai


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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