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https://issues.apache.org/jira/browse/LOG4J2-240?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ralph Goers resolved LOG4J2-240.
--------------------------------
Resolution: Cannot Reproduce
I ran tests with your configuration against 2.0-beta5, 2.0-beta6 and
2.0-beta7-SNAPSHOT and didn't get the recursive call to the appender on any of
them. However, the FlumeAvroManager was modified in 2.0-beta6 to use Flume's
RPCClient so its behavior when starting up with no agents available is a bit
different than 2.0-beta5.
> Recursive call to appender error using Flume appender
> -----------------------------------------------------
>
> Key: LOG4J2-240
> URL: https://issues.apache.org/jira/browse/LOG4J2-240
> Project: Log4j 2
> Issue Type: Bug
> Components: Appenders
> Affects Versions: 2.0-beta5
> Environment: Ubuntu 12
> Reporter: Robbie Strickland
> Labels: flume
>
> I am using Log4j2 with the Flume appender with the following configuration:
> <?xml version="1.0" encoding="UTF-8"?>
> <configuration status="debug" name="ALI" packages="">
> <appenders>
> <Flume name="eventLogger" suppressExceptions="false" compress="false">
> <Agent host="localhost" port="4141"/>
> <RFC5424Layout enterpriseNumber="18060" includeMDC="true"
> appName="com.weather.ali"/>
> </Flume>
> <RollingFile name="VTECs" fileName="logs/vtecs.log"
>
> filePattern="logs/$${date:yyyy-MM}/app-%d{MM-dd-yyyy}-%i.log.gz">
> <PatternLayout>
> <pattern>[%d{ISO8601}] %m%n</pattern>
> </PatternLayout>
> <Policies>
> <TimeBasedTriggeringPolicy />
> <SizeBasedTriggeringPolicy size="250 MB"/>
> </Policies>
> </RollingFile>
> </appenders>
> <loggers>
> <root level="debug">
> <appender-ref ref="eventLogger"/>
> </root>
> <logger name="VTEC" level="debug">
> <appender-ref ref="VTECs"/>
> </logger>
> </loggers>
> </configuration>
> This works as expected on a couple nodes, but the remaining nodes produce the
> following error:
> ERROR Recursive call to appender eventLogger
> Here is the full output of the Log4j bootstrap:
> 2013-05-07 09:21:59,033 DEBUG Calling createAgent on class
> org.apache.logging.log4j.flume.appender.Agent for element Agent with
> params(host="localhost", port="4141")
> 2013-05-07 09:21:59,040 DEBUG Calling createLayout on class
> org.apache.logging.log4j.core.layout.RFC5424Layout for element RFC5424Layout
> with params(facility="null", id="null", enterpriseNumber="18060",
> includeMDC="true", mdcId="null", mdcPrefix="null", eventPrefix="null",
> newLine="null", newLineEscape="null", appName="com.weather.ali",
> messageId="null", mdcExcludes="null", mdcIncludes="null", mdcRequired="null",
> charset="null", exceptionPattern="null", Configuration(MyApp))
> 2013-05-07 09:22:02,148 DEBUG Generated plugins in 3.106963125 seconds
> 2013-05-07 09:22:02,156 DEBUG Calling createAppender on class
> org.apache.logging.log4j.flume.appender.FlumeAppender for element Flume with
> params(agents={host=localhost port=4141}, properties={}, embedded="null",
> type="null", dataDir="null", connectTimeout="null", requestTimeout="null",
> agentRetries="null", maxDelay="null", name="eventLogger",
> suppressExceptions="false", mdcExcludes="null", mdcIncludes="null",
> mdcRequired="null", mdcPrefix="null", eventPrefix="null", compress="false",
> batchSize="null", null, RFC5424Layout(facility=LOCAL0 appName=com.weather.ali
> defaultId=Audit enterpriseNumber=18060 newLine=false includeMDC=true
> messageId=null), null)
> 2013-05-07 09:22:02,159 DEBUG Starting FlumeAvroManager
> FlumeAvro[localhost:4141]
> 2013-05-07 09:22:02,552 DEBUG Calling createAppenders on class
> org.apache.logging.log4j.core.config.plugins.AppendersPlugin for element
> appenders with params(appenders={eventLogger})
> 2013-05-07 09:22:06,774 DEBUG Generated plugins in 4.221008626 seconds
> 2013-05-07 09:22:06,776 DEBUG Calling createAppenderRef on class
> org.apache.logging.log4j.core.config.AppenderRef for element appender-ref
> with params(ref="eventLogger", level="null", null)
> 2013-05-07 09:22:06,778 DEBUG Calling createLogger on class
> org.apache.logging.log4j.core.config.LoggerConfig$RootLogger for element root
> with params(additivity="null", level="debug", includeLocation="null",
> appender-ref={org.apache.logging.log4j.core.config.AppenderRef@55ed34f1},
> properties={}, Configuration(MyApp), null)
> 2013-05-07 09:22:06,779 DEBUG Calling createLoggers on class
> org.apache.logging.log4j.core.config.plugins.LoggersPlugin for element
> loggers with params(loggers={root})
> 2013-05-07 09:22:06,779 DEBUG Shutting down OutputStreamManager SYSTEM_OUT
> 2013-05-07 09:22:06,779 DEBUG Reconfiguration completed
> 2013-05-07 09:22:07,237 ERROR Recursive call to appender eventLogger
> Why would this work on some nodes and not on others? I have looked at the
> code where this error is generated, and it appears to get called whenever the
> appender code gets called more than once. I see no reason why this should
> happen.
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