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https://issues.apache.org/jira/browse/KAFKA-16989?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17855954#comment-17855954
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TengYao Chi commented on KAFKA-16989:
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Gentle ping [~chia7712]
If you are not start working on this one, I would like to handle it. :)
> Use StringBuilder instead of string concatenation
> -------------------------------------------------
>
> Key: KAFKA-16989
> URL: https://issues.apache.org/jira/browse/KAFKA-16989
> Project: Kafka
> Issue Type: Improvement
> Reporter: Chia-Ping Tsai
> Assignee: Chia-Ping Tsai
> Priority: Minor
>
> https://github.com/apache/kafka/blob/2fd00ce53678509c9f2cfedb428e37a871e3d530/metadata/src/main/java/org/apache/kafka/image/node/ClientQuotasImageNode.java#L130
> The string concatenation will create many new strings and we can reduce the
> cost by using StringBuilder
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