KAFKA-16235: Skip deleted-topic auto-commit retries before rebalance - #23213
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MdTanwer wants to merge 1 commit into
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KAFKA-16235: Skip deleted-topic auto-commit retries before rebalance#23213MdTanwer wants to merge 1 commit into
MdTanwer wants to merge 1 commit into
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Regex subscriptions that lose a topic currently retry OffsetCommit on UNKNOWN_TOPIC_OR_PARTITION until rebalance.timeout.ms, which blocks JoinGroup and pauses fetches for every assigned partition. Generated-by: Cursor Grok 4.6
MdTanwer
marked this pull request as draft
August 20, 2026 09:46
MdTanwer
marked this pull request as ready for review
August 20, 2026 09:55
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This change is my original work and I license it to the Apache Kafka project under the Apache License 2.0.
Summary
ConsumerCoordinatorno longer retriesUNKNOWN_TOPIC_OR_PARTITIONwhile auto-committing before JoinGroup (onJoinPrepare). A deleted topic cannot recover; the old retry loop blocked rebalance and, with the EAGER protocol, paused fetches for all assigned partitions (regex subscribe + topic delete).COORDINATOR_LOAD_IN_PROGRESSis still retried. UsercommitSyncstill retries UTOR.Fixes KAFKA-16235 (regression since 3.2.1 after KAFKA-14024). Aligns classic rebalance commit with KAFKA-16224 on the new consumer.