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Posted to dev@kafka.apache.org by "fujian (Jira)" <ji...@apache.org> on 2025/11/03 07:57:00 UTC

[jira] [Created] (KAFKA-19858) Add configurable min.insync.replicas (default=2) for __remote_log_metadata topic

fujian created KAFKA-19858:
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             Summary: Add configurable min.insync.replicas (default=2) for __remote_log_metadata topic
                 Key: KAFKA-19858
                 URL: https://issues.apache.org/jira/browse/KAFKA-19858
             Project: Kafka
          Issue Type: Improvement
          Components: Tiered-Storage
            Reporter: fujian
            Assignee: fujian


The __remote_log_metadata internal topic currently lacks a configurable min.insync.replicas setting, relying on the broker-level default (typically 1). This creates a data loss risk in production environments, as writes may be acknowledged by only a single replica.

This is inconsistent with __transaction_state, which explicitly sets min.insync.replicas=2 via the transaction.state.log.min.isr broker configuration. Both topics store critical metadata and should have equivalent durability guarantees.



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