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  1. logback
  2. LOGBACK-1244

Failed to recover after collision detected.

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      Application upgraded from logback 1.1.2 to 1.1.7 after that facing the following issue.
      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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            ceki Ceki Gülcü
            mohanaraosv Mohana Rao S V
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              Created:
              Updated:
              Resolved: