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https://issues.apache.org/jira/browse/HADOOP-14233?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15940831#comment-15940831
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Jonathan Eagles commented on HADOOP-14233:
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My local benchmarking shows a roughly %15 performance gain for
Configuration.set after applying this patch.
> Delay construction of PreCondition.check failure message in Configuration#set
> -----------------------------------------------------------------------------
>
> Key: HADOOP-14233
> URL: https://issues.apache.org/jira/browse/HADOOP-14233
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Jonathan Eagles
> Assignee: Jonathan Eagles
> Attachments: HADOOP-14233.1.patch
>
>
> The String in the precondition check is constructed prior to failure
> detection. Since the normal case is no error, we can gain performance by
> delaying the construction of the string until the failure is detected.
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