test/conf/logback-dtest.xml

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<configuration debug="false" scan="true" scanPeriod="60 seconds">
  <define name="instance_id" class="org.apache.cassandra.distributed.impl.InstanceIDDefiner" />

  <!-- Shutdown hook ensures that async appender flushes -->
  <shutdownHook class="ch.qos.logback.core.hook.DelayingShutdownHook"/>

  <appender name="INSTANCEFILE" class="ch.qos.logback.core.rolling.RollingFileAppender">

    <file>./build/test/logs/${cassandra.testtag}/TEST-${suitename}.log</file>
    <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
      <fileNamePattern>./build/test/logs/${cassandra.testtag}/TEST-${suitename}.log.%i.gz</fileNamePattern>
      <minIndex>1</minIndex>
      <maxIndex>20</maxIndex>
    </rollingPolicy>

    <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
      <maxFileSize>20MB</maxFileSize>
    </triggeringPolicy>

    <encoder>
      <pattern>%-5level [%thread] ${instance_id} %date{ISO8601} %msg%n</pattern>
    </encoder>
    <immediateFlush>false</immediateFlush>
  </appender>

  <appender name="INSTANCEASYNCFILE" class="ch.qos.logback.classic.AsyncAppender">
    <discardingThreshold>0</discardingThreshold>
    <maxFlushTime>0</maxFlushTime>
    <queueSize>1024</queueSize>
    <appender-ref ref="INSTANCEFILE"/>
  </appender>

  <appender name="INSTANCESTDERR" target="System.err" class="ch.qos.logback.core.ConsoleAppender">
    <encoder>
      <pattern>%-5level %date{HH:mm:ss,SSS} %msg%n</pattern>
    </encoder>
    <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
      <level>WARN</level>
    </filter>
  </appender>

  <appender name="INSTANCESTDOUT" target="System.out" class="ch.qos.logback.core.ConsoleAppender">
    <encoder>
      <pattern>%-5level [%thread] ${instance_id} %date{ISO8601} %F:%L - %msg%n</pattern>
    </encoder>
    <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
      <level>DEBUG</level>
    </filter>
  </appender>

  <logger name="org.apache.hadoop" level="WARN"/>

  <root level="DEBUG">
    <appender-ref ref="INSTANCEASYNCFILE" />
    <appender-ref ref="INSTANCESTDERR" />
    <appender-ref ref="INSTANCESTDOUT" />
  </root>
</configuration>