[LOG4J2-2685] Automatic Reconfiguration fails in case of change in the triggeringpolicy

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Duplicate
• Affects Version/s: 2.12.0
• Fix Version/s: 2.13.2
• Component/s: Core

Environment

Windows 10 + Tomcat 8.5 + Log4j2

• Assignee: Unassigned
• Reporter: gaurav
• Created: 30/Aug/19 12:39
• Updated: 18/Apr/20 22:05
• Resolved: 18/Apr/20 22:05

Description

Hi all,

I'm using log4j2 in a web app. I'm using RollingFileAppender and monitorInterval.

The automatic reconfiguration fails with the following exception:

java.lang.IllegalStateException: Pattern does not contain a date

Steps:-

• Change filePattern from "${web:rootDir}/server.%i.log" to "${web:rootDir}/server.log.%d{yyyy-MM-dd}"
• Remove <SizeBasedTriggeringPolicy size="2MB"/> from <Policies> and add <TimeBasedTriggeringPolicy interval="1"/>
• Save log4j2.xml

What I suspect?

The RollingFileManager sets the triggering policy first and then sets the patternprocessor.

While setting the triggering policy, it uses the old pattern which does not contain the RolloverFrequency. So, it throws IllegalStateException with the message

"Pattern does not contain a date".

Possible solution?

In the updateData() of RollingFileManager, set the new pattern processor first and then set the triggering policy.

I have also attached my log4j2.xml and the stacktrace of the error for your reference.

Please assist with the issue.

Thanks

Issue Links

• duplicates: LOG4J2-2766 TimeBasedTriggeringPolicy of RollingRandomAccessFile is not updated instantly