sorry. resent with formatted email content Hi all, I'd like to initiate the vote for KIP-1235 right away as it's a minor change with minimal risk.
Summary: Currently, __remote_log_metadata relies on the broker default for min.isr (typically 1). With min.isr=1 and factor=3, acknowledged writes can be lost if the leader crashes before replication completes, making remote data permanently unreachable. What's more, the similar topic: __transaction_state sets min.isr=2 via transaction.state.log.min.isr.We should provide the same durability for __remote_log_metadata. Proposed Change: Add one new broker config: remote.log.metadata.topic.min.isr (default: 2) When creating __remote_log_metadata, TopicBasedRemoteLogMetadataManager will set min.insync.replicas=2 at the topic level. KIP WIKI: https://cwiki.apache.org/confluence/display/KAFKA/KIP-1235%3A+Correct+the+default+min.insync.replicas+to+2+for+the+__remote_log_metadata+topic Discussion Thread: https://lists.apache.org/thread/016mjw3rrcqnt8475bxr3b3npm0t32xl PR: https://github.com/apache/kafka/pull/20811 Looking forward to your feedback! Thanks! Regards Jian jian fu <[email protected]> 于2025年12月10日周三 12:51写道： > Hi all, I'd like to initiate the vote for KIP-1235 right away as it's a > minor change with minimal risk. Summary: Currently, __remote_log_metadata > relies on the broker default for min.isr (typically 1). With min.isr=1 and > factor=3, acknowledged writes can be lost if the leader crashes before > replication completes, making remote data permanently unreachable. What's > more, the similar topic: __transaction_state sets min.isr=2 via > transaction.state.log.min.isr.We should provide the same durability for > __remote_log_metadata. Proposed Change: Add one new broker config: > remote.log.metadata.topic.min.isr (default: 2) When creating > __remote_log_metadata, TopicBasedRemoteLogMetadataManager will set > min.insync.replicas=2 at the topic level. KIP WIKI: > https://cwiki.apache.org/confluence/display/KAFKA/KIP-1235%3A+Correct+the+default+min.insync.replicas+to+2+for+the+__remote_log_metadata+topic > Discussion Thread: > https://lists.apache.org/thread/016mjw3rrcqnt8475bxr3b3npm0t32xl PR: > https://github.com/apache/kafka/pull/20811 Looking forward to your > feedback! Thanks! Regards Jian >
