hadoop-common-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Patrick Hunt (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-8149) cap space usage of default log4j rolling policy
Date Thu, 08 Mar 2012 23:07:59 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-8149?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Patrick Hunt updated HADOOP-8149:

    Attachment: HADOOP-8149.patch

Updated patch with common only in this patch. I re-verified by running from tarball with DEBUG
turned on and the maxfilesize set to just 10k.
> 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, 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


View raw message