[ https://issues.apache.org/jira/browse/HADOOP-8149?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13241759#comment-13241759
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Hudson commented on HADOOP-8149:
--------------------------------
Integrated in Hadoop-Hdfs-trunk-Commit #2024 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk-Commit/2024/])
HADOOP-8149. Cap space usage of default log4j rolling policy. Contributed by Patrick Hunt
(Revision 1307106)
Result = SUCCESS
eli : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1307106
Files :
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/bin/hadoop-daemon.sh
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/conf/log4j.properties
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/packages/templates/conf/hadoop-env.sh
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/packages/templates/conf/log4j.properties
> 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
> Assignee: Patrick Hunt
> Fix For: 2.0.0
>
> Attachments: HADOOP-8149.patch, HADOOP-8149.patch, HADOOP-8149.patch, 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.
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