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From "Walter Su (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-11741) Add LOG.isDebugEnabled() guard for some LOG.debug(..)
Date Tue, 24 Mar 2015 03:51:53 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-11741?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Walter Su updated HADOOP-11741:
-------------------------------
    Status: Patch Available  (was: Open)

> Add LOG.isDebugEnabled() guard for some LOG.debug(..)
> -----------------------------------------------------
>
>                 Key: HADOOP-11741
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11741
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Walter Su
>            Assignee: Walter Su
>         Attachments: HADOOP-11741.001.patch
>
>
> {{isDebugEnabled()}} is optional. But when there are :
> 1. lots of concatenating Strings
> 2. complicated function calls
> in the arguments, {{LOG.debug(..)}} should be guarded with {{LOG.isDebugEnabled()}} to
avoid unnecessary arguments evaluation and impove performance.



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