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https://issues.apache.org/jira/browse/KAFKA-17584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17892989#comment-17892989
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Matthias J. Sax commented on KAFKA-17584:
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[~christo_lolov] – why is "affects version" set to 3.9.0 while fix version
includes 3.8.1? "affects version" should be the earliest version which has this
bug.
It seem we should at least update it to 3.8.0, but I am wondering if we want to
cherry-pick this for 3.7.2 release that we plan to do?
> Fix incorrect synonym handling for dynamic log configurations
> -------------------------------------------------------------
>
> Key: KAFKA-17584
> URL: https://issues.apache.org/jira/browse/KAFKA-17584
> Project: Kafka
> Issue Type: Bug
> Affects Versions: 3.9.0
> Reporter: Christo Lolov
> Assignee: Christo Lolov
> Priority: Blocker
> Fix For: 3.9.0, 3.8.1
>
>
> Updating certain dynamic configurations (for example `message.max.bytes`)
> causes retention based on time to reset to the default value (source code)
> for log.retention.ms. This poses a durability issue if users have set their
> retention by using log.retention.hours or log.retention.minutes. In other
> words, if a user has set log.retention.hours=-1 (infinite retention) and they
> dynamically change `message.max.bytes` their retention will immediately
> change back to the default of 604800000 ms (7 days) and data before this will
> be scheduled for deletion immediately.
> Steps to reproduce:
> 1. Add log.retention.minutes=1,log.retention.check.interval.ms=1000 to
> server.properties
> 2. Start a single ZK or KRaft instance + a single Kafka instance
> 3. Create a topic using
> {code:java}
> bin/kafka-topics.sh --bootstrap-server localhost:9092 --create --topic A
> --replication-factor 1 --partitions 1 --config min.insync.replicas=1 --config
> segment.bytes=512{code}
> 4. Create a few segments with the console producer
> 5. Observe that they are deleted after 1 minute
> 6. Use the following command
> {code:java}
> bin/kafka-configs.sh --bootstrap-server loclahost:9092 --entity-type brokers
> --entity-default --alter --add-config message.max.bytes=1048609{code}
> (the value of `message.max.bytes` is irrelevant)
> 7. Create a few more segments with the console producer
> 8. Observe that segments are no longer deleted after 1 minute
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