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From "Erik Steffl (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HDFS-1320) Add LOG.isDebugEnabled() guard for each LOG.debug("...")
Date Sat, 28 Aug 2010 07:37:55 GMT

     [ https://issues.apache.org/jira/browse/HDFS-1320?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Erik Steffl updated HDFS-1320:
------------------------------

    Attachment: HDFS-1320-0.22-3.patch

> Add LOG.isDebugEnabled() guard for each LOG.debug("...")
> --------------------------------------------------------
>
>                 Key: HDFS-1320
>                 URL: https://issues.apache.org/jira/browse/HDFS-1320
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 0.22.0
>            Reporter: Erik Steffl
>            Assignee: Erik Steffl
>             Fix For: 0.22.0
>
>         Attachments: HDFS-1320-0.22-1.patch, HDFS-1320-0.22-2.patch, HDFS-1320-0.22-3.patch,
HDFS-1320-0.22.patch
>
>
> Each LOG.debug("...") should be executed only if LOG.isDebugEnabled() is true, in some
cases it's expensive to construct the string that is being printed to log. It's much easier
to always use LOG.isDebugEnabled() because it's easier to check (rather than in each case
reason wheather it's neccessary or not).

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