Hi,
I am Rui from China.
We use both of KafkaAppender (with a AsyncAppender wrapper) and FileAppender of
log4j2 with version 2.6.2 in the application.
Here is the scenaria, when kafka cluster down and stop service, the application
will slow down and wait for given timeout (request.timeout.ms)
to response finally (The bufferSize of AsyncKafka is reached).
I am wondering if there is any solution that the fileAppender can always work
normally without any performance issue which affected
by KafkaAppender. In other words, the KafkaAppender can "DISCARD" the logs when
kafka cluster down while the application
can output the logs by FileAppender.
Thanks,
Rui
<configuration>
<Properties>
<Property name="kafka-servers">xx.xxx.xxx.xxx:xxxx</Property>
<Property name="log-path">/applog/logging</Property>
</Properties>
<Appenders>
<Kafka name="Kafka" topic="test_test" ignoreExceptions="false">
<PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%-5level] [%t] %c{1} - %msg%n"/>
<Property name="bootstrap.servers">${kafka-servers}</Property>
<Property name="request.timeout.ms">1000</Property>
<Property name="max.block.ms">30000</Property>
<Property name="retries">0</Property>
<Property name="acks">0</Property>
</Kafka>
<Async name="AsyncKafka" bufferSize="128">
<AppenderRef ref="Kafka"/>
</Async>
<RollingFile name="RollingFile" fileName="${log-path}/logging.log"
filePattern="${log-path}/$${date:yyyy-MM}/logging-%d{MM-dd-yyyy}-%i.log.gz" >
<PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%-5level] [%t] %c{1} - %msg%n"/>
<Policies>
<TimeBasedTriggeringPolicy />
<SizeBasedTriggeringPolicy size="20 MB" />
</Policies>
<DefaultRolloverStrategy max="100"/>
</RollingFile>
<Console name="Console" target="SYSTEM_OUT" ignoreExceptions="false">
<PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%-5level] [%t] %c{1} - %msg%n"/>
</Console>
</Appenders>
<Loggers>
<Root level="INFO">
<AppenderRef ref="AsyncKafka"/>
<AppenderRef ref="Console"/>
<AppenderRef ref="RollingFile"/>
</Root>
</Loggers>
</configuration>
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