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https://issues.apache.org/jira/browse/LOG4J2-878?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15629767#comment-15629767
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Rowan Lonsdale commented on LOG4J2-878:
---------------------------------------
This is definitely a log4j bug. The error is in the {{visit()}} method of
{{PluginElementVisitor}}, line 66 (in 2.7). The array object is returned
_without_ removing the associated node from the list (as in line 79).
> Failover appender throws "Error flushing stream
> //L-Computer1/test/logs/primary.log" at the time of retry, but the location
> is up
> ---------------------------------------------------------------------------------------------------------------------------------
>
> Key: LOG4J2-878
> URL: https://issues.apache.org/jira/browse/LOG4J2-878
> Project: Log4j 2
> Issue Type: Bug
> Components: Appenders
> Affects Versions: 2.0.2
> Environment: j2ee, spring, webservices, junit, log4j2
> Currently in development and will be moved to production in a weeks time.
> Reporter: saran sundar
> Priority: Critical
> Labels: features
>
> OS: Windows
> Software platform: j2ee, spring, webservices, junit, log4j2
> I want to make sure that the failover configuration works as expected.
> I configured failover appender with two rolling file appenders. Primary
> rolling file appender configured to a shared folder in different computer.
> Secondary file appender pointing to my local file system. Once after i ran
> the junit program and the first debug statement printed, i removed the share
> location from the other computer in the network for the primary appender. As
> expected next debug statements ( i left thread.sleep(30000) in between each
> debug statement in junit program) were redirect to secondary file appender.
> However at the time of retry by failover appender , it tries to reconnect to
> the primary location which is up now (enabled the share location in different
> computer), but received following error..
> {code}
> 2014-10-21 10:34:11,463 ERROR Unable to write to stream
> //L-Computer1/test/logs/primary.log for appender primeCompressedDaily
> 2014-10-21 10:34:11,463 ERROR An exception occurred processing Appender
> primeCompressedDaily
> org.apache.logging.log4j.core.appender.AppenderLoggingException: Error
> flushing stream //L-Computer1/test/logs/primary.log
> at
> org.apache.logging.log4j.core.appender.OutputStreamManager.flush(OutputStreamManager.java:159)
> at
> org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.append(AbstractOutputStreamAppender.java:108)
> at
> org.apache.logging.log4j.core.appender.RollingFileAppender.append(RollingFileAppender.java:86)
> at
> org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:97)
> at
> org.apache.logging.log4j.core.appender.FailoverAppender.callAppender(FailoverAppender.java:117)
> at
> org.apache.logging.log4j.core.appender.FailoverAppender.append(FailoverAppender.java:109)
> at
> org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:97)
> at
> org.apache.logging.log4j.core.appender.AsyncAppender$AsyncThread.callAppenders(AsyncAppender.java:288)
> at
> org.apache.logging.log4j.core.appender.AsyncAppender$AsyncThread.run(AsyncAppender.java:240)
> Caused by: java.io.IOException: The specified network name is no longer
> available
> at java.io.FileOutputStream.writeBytes(Native Method)
> at java.io.FileOutputStream.write(FileOutputStream.java:318)
> at
> java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
> at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
> at
> org.apache.logging.log4j.core.appender.OutputStreamManager.flush(OutputStreamManager.java:156)
> ... 8 more
> {code}
> 2014-10-21 10:39:31,484 ERROR Unable to write to stream
> //L-Computer1/test/logs/primary.log for appender primeCompressedDaily
> log4j2.xml entries is given below,
> {code}
> <?xml version="1.0" encoding="UTF-8"?>
> <!-- set status below to FATAL to suppress a bug in log4j2: "ERROR appender
> Failover has no parameter that matches element Failovers" -->
> <!-- other working value for status is "warn" - -->
> <Configuration status="warn" name="log4j2" packages="com.ims.log4j">
> <Appenders>
>
> <Console name="stdout" target="SYSTEM_OUT"
> ignoreExceptions="false">
> <PatternLayout pattern="%d{ABSOLUTE} %1p %X{userinfo}
> %c{1}:%L - %m%n"/>
> </Console>
>
> <RollingFile name="compressedDaily"
> fileName="c:/installed/Tomcat-7.0.12/logs/secondary.log"
>
> filePattern="c:/installed/Tomcat-7.0.12/logs/secondary.log.%d{yyyy-MM-dd}.gz"
> ignoreExceptions="false">
> <PatternLayout>
> <Pattern>%d{ABSOLUTE} %1p %X{userinfo} %c{1}:%L
> - %m%n</Pattern>
> </PatternLayout>
> <Policies>
> <TimeBasedTriggeringPolicy/>
> <SizeBasedTriggeringPolicy/>
> </Policies>
> </RollingFile>
>
> <RollingFile name="primeCompressedDaily"
> fileName="//L-Computer1/test/logs/primary.log"
>
> filePattern="//L-Computer1/test/logs/primary.log.%d{yyyy-MM-dd}.gz"
> ignoreExceptions="false" >
> <PatternLayout>
> <Pattern>%d{ABSOLUTE} %1p %X{userinfo} %c{1}:%L
> - %m%n</Pattern>
> </PatternLayout>
> <Policies>
> <TimeBasedTriggeringPolicy/>
> <SizeBasedTriggeringPolicy/>
> </Policies>
> </RollingFile>
>
> <Failover name="FailoverAppender"
> primary="primeCompressedDaily" retryInterval="61" ignoreExceptions="false">
> <Failovers>
> <AppenderRef ref="compressedDaily" />
> </Failovers>
> </Failover>
>
> <Async name="asyncCompressed">
> <AppenderRef ref="FailoverAppender" />
> </Async>
> <Async name="asyncStdout">
> <AppenderRef ref="stdout" />
> </Async>
> </Appenders>
>
> <Loggers>
> <Root level="trace">
> <AppenderRef ref="asyncCompressed" level="trace"/>
> <AppenderRef ref="asyncStdout" level="trace"/>
> </Root>
>
> <Logger name="com.ims" level="debug" includeLocation="true"
> additivity="false">
> <AppenderRef ref="asyncCompressed"/>
> </Logger>
>
> <Logger name="org.apache.cxf.interceptor.LoggingInInterceptor"
> level="info" includeLocation="true" additivity="false">
> <AppenderRef ref="asyncCompressed"/>
> </Logger>
>
> <Logger name="org.apache.cxf.interceptor.LoggingOutInterceptor"
> level="info" includeLocation="true" additivity="false">
> <AppenderRef ref="asyncCompressed"/>
> </Logger>
>
> <Logger name="org.hibernate" level="error"
> includeLocation="true" additivity="false">
> <AppenderRef ref="asyncCompressed"/>
> </Logger>
>
> <Logger name="test.escalation" level="debug" includeLocation="true"
> additivity="false">
> <AppenderRef ref="asyncCompressed"/>
> </Logger>
>
> <Logger name="org.apache.cxf" level="info" includeLocation="true"
> additivity="false">
> <AppenderRef ref="asyncCompressed"/>
> </Logger>
> </Loggers>
> </Configuration>
> {code}
> Junit method
> {code}
> @Test
> public void log4jTest() throws Exception {
> System.out.println("log4j2 test");
> Thread.sleep(30000);
> log.error("debug-log4j2 test*1");
> Thread.sleep(60000);
> log.error("debug-log4j2 test*2");
> Thread.sleep(30000);
> System.out.println("debug-log4j2 test*3");
> Thread.sleep(70000);
> log.info("debug-log4j2 test*4");
> Thread.sleep(30000);
> log.debug("debug-log4j2 test*5");
> Thread.sleep(30000);
> log.debug("debug-log4j2 test*6");
> Thread.sleep(30000);
> log.debug("debug-log4j2 test*7");
> Thread.sleep(30000);
> log.debug("debug-log4j2 test*8");
> Thread.sleep(290000);
> log.debug("debug-log4j2 test*9");
> Thread.sleep(30000);
> log.debug("debug-log4j2 test*10");
> System.out.println("debug-log4j2 test*6");
> }
> {code}
> PS Please forgive if I wasn't narrate the problem properly. any quick help in
> this issue would be highly appreciated.
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