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https://issues.apache.org/jira/browse/KAFKA-1350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13954869#comment-13954869
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Neha Narkhede commented on KAFKA-1350:
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[~tnachen] Filed KAFKA-1351 to convert the String.format uses in our logging.
> Fix excessive state change logging
> ----------------------------------
>
> Key: KAFKA-1350
> URL: https://issues.apache.org/jira/browse/KAFKA-1350
> Project: Kafka
> Issue Type: Bug
> Affects Versions: 0.8.1
> Reporter: Joel Koshy
> Assignee: Neha Narkhede
> Priority: Blocker
> Fix For: 0.8.1.1
>
> Attachments: KAFKA-1350.patch, KAFKA-1350_2014-03-29_23:28:07.patch
>
>
> I can provide steps to reproduce this issue. The state change logger needs
> to be guarded (to check if trace logging is turned on or not).
> The delete topic patch significantly increased the amount of logging that we
> do both on the controller. This results in higher latencies in state
> transitions and can slow down the controller (as well as the broker). This
> slow-down was how we ran into KAFKA-1342.
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