[
https://issues.apache.org/jira/browse/LOG4NET-552?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15925675#comment-15925675
]
Dominik Psenner commented on LOG4NET-552:
-----------------------------------------
Rolling by date with multiple processes logging and rolling the same files is
never going tobwork without implementing a communication channel in between the
processes to share the rolling state information. I advise you to rethink your
logging configuration.
> Incorrect behavior of RollingFileAppender while rolling files, if multiple
> processes appending into same file
> -------------------------------------------------------------------------------------------------------------
>
> Key: LOG4NET-552
> URL: https://issues.apache.org/jira/browse/LOG4NET-552
> Project: Log4net
> Issue Type: Bug
> Components: Appenders
> Affects Versions: 1.2.15
> Environment: Windows Server 2008 R2 Enterprise
> Reporter: Sachin Abaso Patil
> Priority: Blocker
>
> Hi Team,
> This issue has become blocker for us, as on our production environment,
> multiple processes are appending log into single log file which has no issue,
> but while rolling it overwrites files and thus missing log entries.
> Based on link below, it looks like log file rolling mechanism of log4net is
> not process safe even after using FileAppender.InterProcessLock.
> Link: https://issues.apache.org/jira/browse/LOG4NET-485
> Also, in FAQ (https://logging.apache.org/log4net/release/faq.html) under
> section “How do I get multiple process to log to the same file?”, it has been
> clearly mentioned that, rolling files is simply not compatible with multiple
> process scenario.
> My questions,
> 1. We are using version “1.2.15”. Are you planning to fix above mentioned
> rolling issue in upcoming release? If yes then please provide tentative
> release date.
> 2. We had incorporated log4net in our project in year 2009, had FAQ
> mentioned this limitation (rolling file not compatible with multi process) in
> year 2009? Because we while studying log4net during year 2009 we do not
> remember seeing this note in FAQ?
> Requesting you to please respond as soon as possible with your comments.
> Below is how we have configured appender for all processes,
> <appender name="RollingFileAppender"
> type="log4net.Appender.RollingFileAppender">
> <threshold value ="ERROR"/>
> <file value="${SystemDrive}\LogFiles\Example.log" />
> <param name="LockingModel"
> type="log4net.Appender.FileAppender+MinimalLock" />
> <appendToFile value="true" />
> <maximumFileSize value="100MB" />
> <staticLogFileName value="true"/>
> <maxSizeRollBackups value="-1" />
> <countDirection value="1" />
> <datePattern value=".yyyyMMddHH'.log'"/>
> <rollingStyle value="Composite" />
> <ignoreExceptionItemAgeLimit value="false" />
> <exceptionItemAgeLimit value="00:00:59" />
> <layout type="log4net.Layout.PatternLayout">
> <param name="conversionPattern" value ="%utcdate{yyyy-MM-dd
> HH:mm:ss.fff}|%-5level|%property{EventID}|%property{log4net:HostName}|%appdomain|%property{ProcessID}|%thread|%message%newline"/>
> </layout>
> </appender>
> Thanks,
> Sachin Patil
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
