When I use a rollingPolicy that only uses the year part of a date (i.e. '%d

) this is not recognized by log back. See stack trace below.

This makes sense when I look at ch.qos.logback.core.rolling.helper.PeriodicityType I see no value for year, the longest is month...

t java.lang.IllegalStateException: Unknown periodicity type.
at at ch.qos.logback.core.rolling.helper.RollingCalendar.getRelativeDate(RollingCalendar.java:234)
at at ch.qos.logback.core.rolling.helper.RollingCalendar.getNextTriggeringDate(RollingCalendar.java:241)
at at ch.qos.logback.core.rolling.helper.RollingCalendar.getNextTriggeringMillis(RollingCalendar.java:64)
at at ch.qos.logback.core.rolling.TimeBasedFileNamingAndTriggeringPolicyBase.computeNextCheck(TimeBasedFileNamingAndTriggeringPolicyBase.java:75)
at at ch.qos.logback.core.rolling.TimeBasedFileNamingAndTriggeringPolicyBase.start(TimeBasedFileNamingAndTriggeringPolicyBase.java:67)
at at ch.qos.logback.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy.start(DefaultTimeBasedFileNamingAndTriggeringPolicy.java:32)
at at ch.qos.logback.core.rolling.TimeBasedRollingPolicy.start(TimeBasedRollingPolicy.java:87)
at at ch.qos.logback.core.joran.action.NestedComplexPropertyIA.end(NestedComplexPropertyIA.java:167)
at at ch.qos.logback.core.joran.spi.Interpreter.callEndAction(Interpreter.java:318)
at at ch.qos.logback.core.joran.spi.Interpreter.endElement(Interpreter.java:197)
at at ch.qos.logback.core.joran.spi.Interpreter.endElement(Interpreter.java:183)
at at ch.qos.logback.core.joran.spi.EventPlayer.play(EventPlayer.java:62)
at at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:157)
at at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:143)
at at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:106)
at at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:56)
at at ch.qos.logback.classic.util.ContextInitializer.configureByResource(ContextInitializer.java:75)
at at ch.qos.logback.classic.util.ContextInitializer.autoConfig(ContextInitializer.java:148)
at at org.slf4j.impl.StaticLoggerBinder.init(StaticLoggerBinder.java:84)
at at org.slf4j.impl.StaticLoggerBinder.<clinit>(StaticLoggerBinder.java:54)
at at org.slf4j.LoggerFactory.bind(LoggerFactory.java:128)
at at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:107)
at at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:295)
at at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:269)
at at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:281)