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https://issues.apache.org/jira/browse/KAFKA-1351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14513096#comment-14513096
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Neha Narkhede commented on KAFKA-1351:
--------------------------------------
Not sure that this is still a concern. I was hoping whoever picks this up can
do a quick microbenchmark to see if the suggestion in the description is really
worth a change or not.
> String.format is very expensive in Scala
> ----------------------------------------
>
> Key: KAFKA-1351
> URL: https://issues.apache.org/jira/browse/KAFKA-1351
> Project: Kafka
> Issue Type: Bug
> Components: core
> Affects Versions: 0.7.2, 0.8.0, 0.8.1
> Reporter: Neha Narkhede
> Labels: newbie
> Fix For: 0.8.3
>
> Attachments: KAFKA-1351.patch, KAFKA-1351_2014-04-07_18:02:18.patch,
> KAFKA-1351_2014-04-09_15:40:11.patch
>
>
> As found in KAFKA-1350, logging is causing significant overhead in the
> performance of a Kafka server. There are several info statements that use
> String.format which is particularly expensive. We should investigate adding
> our own version of String.format that merely uses string concatenation under
> the covers.
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