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https://issues.apache.org/jira/browse/HADOOP-12912?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15383375#comment-15383375
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Gera Shegalov commented on HADOOP-12912:
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isDebugEnabled is worth doing for "best practices" reason imo. I just noticed
it in a thread dump. It's much more than a branching instruction. there a bunch
of invokevirtual in commons and log4j logging and invokeinterface call behind
it.
> Add LOG.isDebugEnabled() guard in Progress.set method
> -----------------------------------------------------
>
> Key: HADOOP-12912
> URL: https://issues.apache.org/jira/browse/HADOOP-12912
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Tsuyoshi Ozawa
> Assignee: Tsuyoshi Ozawa
> Attachments: HADOOP-12912.001.patch
>
>
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