Mailing-List: contact common-issues-help@hadoop.apache.org; run by ezmlm
Precedence: bulk
Reply-To: common-issues@hadoop.apache.org
Date: Wed, 7 Mar 2012 20:22:58 +0000 (UTC)
From: "Patrick Hunt (Commented) (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
Message-ID: 
 <1195373864.35960.1331151778024.JavaMail.tomcat@hel.zones.apache.org>
In-Reply-To: 
 <1950600693.35800.1331149977562.JavaMail.tomcat@hel.zones.apache.org>
Subject: [jira] [Commented] (HADOOP-8149) cap space usage of default log4j
 rolling policy
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit


    [ https://issues.apache.org/jira/browse/HADOOP-8149?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13224672#comment-13224672 ] 

Patrick Hunt commented on HADOOP-8149:
--------------------------------------

Jenkins doesn't like me, but I'd still like to get some feedback if this approach is acceptable or not.
                
> cap space usage of default log4j rolling policy 
> ------------------------------------------------
>
>                 Key: HADOOP-8149
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8149
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: conf
>            Reporter: Patrick Hunt
>         Attachments: HADOOP-8149.patch
>
>
> I've seen several critical production issues because logs are not automatically removed after some time and accumulate. Changes to Hadoop's default log4j file appender would help with this.
> I recommend we move to an appender which:
> 1) caps the max file size (configurable)
> 2) caps the max number of files to keep (configurable)
> 3) uses rolling file appender rather than DRFA, see the warning here:
> http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/DailyRollingFileAppender.html
> Specifically: "DailyRollingFileAppender has been observed to exhibit synchronization issues and data loss."
> We'd lose (based on the default log4j configuration) the daily rolling aspect, however increase reliability.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira