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Ideally the below scenario never produces same file name but it's throwing the below error. Logback stops logging instead of recovering from the error.
<property name="logback.logdir" value="logs/appgensrv/" />
<property name="logback.backupdir" value="logs/appgensrv/tmp/" />
<property name="logback.rollingPattern" value="%d {yyyy-MM-dd_HH}" />
<appender name="TRACE" class="ch.qos.logback.classic.sift.SiftingAppender">
<discriminator>
<key>siftdomain</key>
<defaultValue>unknown</defaultValue>
</discriminator>
<sift>
<appender name="FILETD-${siftdomain}"
class="ch.qos.logback.core.rolling.RollingFileAppender">
<file>${logback.logdir}/${siftdomain}_trace.log</file>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${logback.backupdir}/${siftdomain}_trace.log.${logback.rollingPattern}</fileNamePattern>
</rollingPolicy>
<encoder>
<pattern>${logback.fullPattern}</pattern>
</encoder>
</appender>
</sift>
</appender>
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[FILETD-AGR] - 'FileNamePattern' option has the same value "logs/appgensrv/tmp//AGR_trace.log.%d{yyyy-MM-dd_HH}
" as that given for appender [FILETD-AGR] defined earlier.
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[FILETD-AGR] - Collisions detected with FileAppender/RollingAppender instances defined earlier. Aborting.
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[FILETD-AGR] - For more information, please visit http://logback.qos.ch/codes.html#earlier_fa_collision
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