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https://issues.apache.org/jira/browse/KAFKA-17579?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Christo Lolov resolved KAFKA-17579.
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Resolution: Fixed
> Dynamic LogCleaner configurations are not picked up upon restart
> ----------------------------------------------------------------
>
> Key: KAFKA-17579
> URL: https://issues.apache.org/jira/browse/KAFKA-17579
> Project: Kafka
> Issue Type: Bug
> Reporter: Christo Lolov
> Priority: Major
>
> Dynamic configurations for the LogCleaner are not applied upon a restart.
>
> Reproduction steps:
> # Create a 1-broker cluster
> # Change the number of log.cleaner.threads to 2
> # Bounce the broker
> # Observe the server.logs - you will notice that only 1 log cleaner thread
> has been instantiated
>
> Proposed solution:
> # Change immutable variables `val` to methods `def`
> # Add unit/integration tests which test reconfiguration of the LogCleaner
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