[LOG4J2-2941] zero-padding configuration problem

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Resolved
• Affects Version/s: 2.13.3
• Fix Version/s: 2.18.0
• Component/s: Configuration
• Labels: zero-padding

Environment

My configuration demo is as follow:

name = PropertiesConfig
property.filePath = /users/jasonyu/Desktop/logs
monitorInterval = 10

appenders = rolling

appender.rolling.type = RollingFile
appender.rolling.name = RollingLogFile
appender.rolling.fileName=${filePath}/server.log
appender.rolling.filePattern = ${filePath}/server-%04i.log.gz
appender.rolling.layout.type = PatternLayout
appender.rolling.layout.pattern=[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n
appender.rolling.filter.threshold.type = ThresholdFilter
appender.rolling.filter.threshold.level = info
appender.rolling.policies.type = Policies
appender.rolling.policies.size.type = SizeBasedTriggeringPolicy
appender.rolling.policies.size.size = 3MB
appender.rolling.strategy.type = DefaultRolloverStrategy
appender.rolling.strategy.max = 500
appender.rolling.strategy.fileIndex = max

rootLogger.level = INFO
rootLogger.appenderRef.rolling.ref = RollingLogFile

• Assignee: Unassigned
• Reporter: jasonyu
• Created: 11/Oct/20 09:26
• Updated: 09/Jun/22 21:36
• Resolved: 09/Jun/22 12:39

Description

I used the configuration file which set the filePattern like "appender.rolling.filePattern = ${filePath}/server-%04i.log.gz" and "appender.rolling.strategy.max = 500".I wanted to use the zero-padding and keep 500 log files at the same time. But, the log files stopped increasing since the counter reach 100 seems like the configuration 500 not work. 

In another situation that I used "%i" instead of "%04i", the maxIndex 500 worked normally, so maybe the problem is related to zero-padding.

Issue Links

• is related to: LOG4J2-3432 RollingFileAppender fails after 100 backup cycles if filePattern contains "%04i" .