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Posted to log4j-user@logging.apache.org by dvrmc <dv...@aricent.com> on 2008/01/30 10:00:21 UTC
log4j : How to avoid duplicate logmessages in a multithreaded
application?
Hi,
I m using log4j for my heavily multithreaded JAVA application. After my
application comes up, a few minutes later , I find many duplicate logger
messages on the console(only logger messages in threads are being displayed
8-9 times each). Is it that my application being multithreaded or is there
something wrong with my configuration file?
My log4j-config.xml is as below:-
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/"
configDebug="true">
<appender name="ASYNC" class="org.apache.log4j.AsyncAppender"
additivity="false">
<appender-ref ref="TEMP"/>
<appender-ref ref="CONSOLE"/>
<appender-ref ref="TRACE"/>
<appender-ref ref="DEBUG"/>
<appender-ref ref="INFO"/>
<appender-ref ref="WARN"/>
<appender-ref ref="ERROR"/>
<appender-ref ref="FATAL"/>
</appender>
<appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">
<!-- param name="ImmediateFlush" value="true"/-->
<layout class="org.apache.log4j.PatternLayout">
<!-- param name="ConversionPattern"
value="%d %-5p [%t] %C %A (%F:%L) - %m%n"/-->
</layout>
</appender>
<appender name="TEMP" class="org.apache.log4j.FileAppender">
<layout class="org.apache.log4j.PatternLayout">
</layout>
</appender>
<appender name="TRACE" class="org.apache.log4j.FileAppender">
<layout class="org.apache.log4j.PatternLayout">
</layout>
</appender>
<appender name="DEBUG" class="org.apache.log4j.FileAppender">
<layout class="org.apache.log4j.PatternLayout">
</layout>
</appender>
<appender name="INFO" class="org.apache.log4j.FileAppender">
<layout class="org.apache.log4j.PatternLayout">
</layout>
<filter class="org.apache.log4j.varia.LevelMatchFilter">
</filter>
<filter class="org.apache.log4j.varia.DenyAllFilter"/>
</appender>
<appender name="WARN" class="org.apache.log4j.FileAppender">
<layout class="org.apache.log4j.PatternLayout">
</layout>
<filter class="org.apache.log4j.varia.LevelMatchFilter">
</filter>
<filter class="org.apache.log4j.varia.DenyAllFilter"/>
</appender>
<appender name="ERROR" class="org.apache.log4j.FileAppender">
<layout class="org.apache.log4j.PatternLayout">
</layout>
<filter class="org.apache.log4j.varia.LevelMatchFilter">
</filter>
<filter class="org.apache.log4j.varia.DenyAllFilter"/>
</appender>
<appender name="FATAL" class="org.apache.log4j.FileAppender">
<layout class="org.apache.log4j.PatternLayout">
</layout>
<filter class="org.apache.log4j.varia.LevelMatchFilter">
</filter>
<filter class="org.apache.log4j.varia.DenyAllFilter"/>
</appender>
<appender name="SLCS" class="org.apache.log4j.FileAppender">
<layout class="org.apache.log4j.PatternLayout">
</layout>
</appender>
<category name="com.aircell.abs.acpu.softwareloadconfig"
additivity="false">
<level value="debug"/>
<appender-ref ref="SLCS"/>
</category>
<root>
<priority value="info"/>
<appender-ref ref="ASYNC"/>
</root>
</log4j:configuration>
Regards.
--
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Re: log4j : How to avoid duplicate logmessages in a multithreaded
application?
Posted by dvrmc <dv...@aricent.com>.
Hi james,
Thanks for the reply. I m configuring log4j using a DOMConfigurator as shown
below. I m not sure what exactly the configure method does though.
DOMConfigurator.configure(prop.getProperty("Log4jConfig"));
Also, the no. of duplicate logger messages I see is constant(around 8-9). I
have 8 appenders in the log4j-config.xml file too. Are they adding up?
Regards.
James A. N. Stauffer wrote:
>
> My guess is that log4j is being configured multiple times. Each time
> log4j is configured, the new configuration is added to the current
> configuration.
>
> How are you configuring log4j?
>
> On Jan 30, 2008 3:00 AM, dvrmc <dv...@aricent.com> wrote:
>>
>> Hi,
>> I m using log4j for my heavily multithreaded JAVA application. After my
>> application comes up, a few minutes later , I find many duplicate logger
>> messages on the console(only logger messages in threads are being
>> displayed
>> 8-9 times each). Is it that my application being multithreaded or is
>> there
>> something wrong with my configuration file?
>>
>> My log4j-config.xml is as below:-
>>
>> <?xml version="1.0" encoding="UTF-8"?>
>> <!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
>>
>> <log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/"
>> configDebug="true">
>>
>> <appender name="ASYNC" class="org.apache.log4j.AsyncAppender"
>> additivity="false">
>> <appender-ref ref="TEMP"/>
>> <appender-ref ref="CONSOLE"/>
>> <appender-ref ref="TRACE"/>
>> <appender-ref ref="DEBUG"/>
>> <appender-ref ref="INFO"/>
>> <appender-ref ref="WARN"/>
>> <appender-ref ref="ERROR"/>
>> <appender-ref ref="FATAL"/>
>> </appender>
>>
>> <appender name="CONSOLE"
>> class="org.apache.log4j.ConsoleAppender">
>> <!-- param name="ImmediateFlush" value="true"/-->
>> <layout class="org.apache.log4j.PatternLayout">
>> <!-- param name="ConversionPattern"
>> value="%d %-5p [%t] %C %A (%F:%L) - %m%n"/-->
>> </layout>
>> </appender>
>>
>>
>> <appender name="TEMP" class="org.apache.log4j.FileAppender">
>>
>> <layout class="org.apache.log4j.PatternLayout">
>>
>> </layout>
>> </appender>
>>
>> <appender name="TRACE" class="org.apache.log4j.FileAppender">
>>
>>
>> <layout class="org.apache.log4j.PatternLayout">
>>
>> </layout>
>> </appender>
>>
>> <appender name="DEBUG" class="org.apache.log4j.FileAppender">
>>
>>
>> <layout class="org.apache.log4j.PatternLayout">
>>
>> </layout>
>> </appender>
>>
>> <appender name="INFO" class="org.apache.log4j.FileAppender">
>>
>> <layout class="org.apache.log4j.PatternLayout">
>>
>> </layout>
>>
>> <filter class="org.apache.log4j.varia.LevelMatchFilter">
>>
>> </filter>
>>
>> <filter class="org.apache.log4j.varia.DenyAllFilter"/>
>> </appender>
>>
>> <appender name="WARN" class="org.apache.log4j.FileAppender">
>>
>> <layout class="org.apache.log4j.PatternLayout">
>>
>> </layout>
>>
>> <filter class="org.apache.log4j.varia.LevelMatchFilter">
>>
>> </filter>
>> <filter class="org.apache.log4j.varia.DenyAllFilter"/>
>> </appender>
>>
>> <appender name="ERROR" class="org.apache.log4j.FileAppender">
>>
>> <layout class="org.apache.log4j.PatternLayout">
>>
>> </layout>
>>
>> <filter class="org.apache.log4j.varia.LevelMatchFilter">
>>
>> </filter>
>> <filter class="org.apache.log4j.varia.DenyAllFilter"/>
>> </appender>
>>
>> <appender name="FATAL" class="org.apache.log4j.FileAppender">
>>
>> <layout class="org.apache.log4j.PatternLayout">
>>
>> </layout>
>>
>> <filter class="org.apache.log4j.varia.LevelMatchFilter">
>>
>> </filter>
>> <filter class="org.apache.log4j.varia.DenyAllFilter"/>
>> </appender>
>>
>> <appender name="SLCS" class="org.apache.log4j.FileAppender">
>>
>> <layout class="org.apache.log4j.PatternLayout">
>>
>> </layout>
>> </appender>
>>
>> <category name="com.aircell.abs.acpu.softwareloadconfig"
>> additivity="false">
>> <level value="debug"/>
>> <appender-ref ref="SLCS"/>
>> </category>
>>
>> <root>
>> <priority value="info"/>
>> <appender-ref ref="ASYNC"/>
>> </root>
>> </log4j:configuration>
>>
>>
>>
>> Regards.
>> --
>> View this message in context:
>> http://www.nabble.com/log4j-%3A-How-to-avoid-duplicate-logmessages-in-a-multithreaded-application--tp15177220p15177220.html
>> Sent from the Log4j - Users mailing list archive at Nabble.com.
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: log4j-user-unsubscribe@logging.apache.org
>> For additional commands, e-mail: log4j-user-help@logging.apache.org
>>
>>
>
>
>
> --
> James A. N. Stauffer http://www.geocities.com/stauffer_james/
> Are you good? Take the test at http://www.livingwaters.com/good/
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: log4j-user-unsubscribe@logging.apache.org
> For additional commands, e-mail: log4j-user-help@logging.apache.org
>
>
>
--
View this message in context: http://www.nabble.com/log4j-%3A-How-to-avoid-duplicate-logmessages-in-a-multithreaded-application--tp15177220p15198434.html
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Re: log4j : How to avoid duplicate logmessages in a multithreaded application?
Posted by "James A. N. Stauffer" <st...@gmail.com>.
My guess is that log4j is being configured multiple times. Each time
log4j is configured, the new configuration is added to the current
configuration.
How are you configuring log4j?
On Jan 30, 2008 3:00 AM, dvrmc <dv...@aricent.com> wrote:
>
> Hi,
> I m using log4j for my heavily multithreaded JAVA application. After my
> application comes up, a few minutes later , I find many duplicate logger
> messages on the console(only logger messages in threads are being displayed
> 8-9 times each). Is it that my application being multithreaded or is there
> something wrong with my configuration file?
>
> My log4j-config.xml is as below:-
>
> <?xml version="1.0" encoding="UTF-8"?>
> <!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
>
> <log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/"
> configDebug="true">
>
> <appender name="ASYNC" class="org.apache.log4j.AsyncAppender"
> additivity="false">
> <appender-ref ref="TEMP"/>
> <appender-ref ref="CONSOLE"/>
> <appender-ref ref="TRACE"/>
> <appender-ref ref="DEBUG"/>
> <appender-ref ref="INFO"/>
> <appender-ref ref="WARN"/>
> <appender-ref ref="ERROR"/>
> <appender-ref ref="FATAL"/>
> </appender>
>
> <appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">
> <!-- param name="ImmediateFlush" value="true"/-->
> <layout class="org.apache.log4j.PatternLayout">
> <!-- param name="ConversionPattern"
> value="%d %-5p [%t] %C %A (%F:%L) - %m%n"/-->
> </layout>
> </appender>
>
>
> <appender name="TEMP" class="org.apache.log4j.FileAppender">
>
> <layout class="org.apache.log4j.PatternLayout">
>
> </layout>
> </appender>
>
> <appender name="TRACE" class="org.apache.log4j.FileAppender">
>
>
> <layout class="org.apache.log4j.PatternLayout">
>
> </layout>
> </appender>
>
> <appender name="DEBUG" class="org.apache.log4j.FileAppender">
>
>
> <layout class="org.apache.log4j.PatternLayout">
>
> </layout>
> </appender>
>
> <appender name="INFO" class="org.apache.log4j.FileAppender">
>
> <layout class="org.apache.log4j.PatternLayout">
>
> </layout>
>
> <filter class="org.apache.log4j.varia.LevelMatchFilter">
>
> </filter>
>
> <filter class="org.apache.log4j.varia.DenyAllFilter"/>
> </appender>
>
> <appender name="WARN" class="org.apache.log4j.FileAppender">
>
> <layout class="org.apache.log4j.PatternLayout">
>
> </layout>
>
> <filter class="org.apache.log4j.varia.LevelMatchFilter">
>
> </filter>
> <filter class="org.apache.log4j.varia.DenyAllFilter"/>
> </appender>
>
> <appender name="ERROR" class="org.apache.log4j.FileAppender">
>
> <layout class="org.apache.log4j.PatternLayout">
>
> </layout>
>
> <filter class="org.apache.log4j.varia.LevelMatchFilter">
>
> </filter>
> <filter class="org.apache.log4j.varia.DenyAllFilter"/>
> </appender>
>
> <appender name="FATAL" class="org.apache.log4j.FileAppender">
>
> <layout class="org.apache.log4j.PatternLayout">
>
> </layout>
>
> <filter class="org.apache.log4j.varia.LevelMatchFilter">
>
> </filter>
> <filter class="org.apache.log4j.varia.DenyAllFilter"/>
> </appender>
>
> <appender name="SLCS" class="org.apache.log4j.FileAppender">
>
> <layout class="org.apache.log4j.PatternLayout">
>
> </layout>
> </appender>
>
> <category name="com.aircell.abs.acpu.softwareloadconfig"
> additivity="false">
> <level value="debug"/>
> <appender-ref ref="SLCS"/>
> </category>
>
> <root>
> <priority value="info"/>
> <appender-ref ref="ASYNC"/>
> </root>
> </log4j:configuration>
>
>
>
> Regards.
> --
> View this message in context: http://www.nabble.com/log4j-%3A-How-to-avoid-duplicate-logmessages-in-a-multithreaded-application--tp15177220p15177220.html
> Sent from the Log4j - Users mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: log4j-user-unsubscribe@logging.apache.org
> For additional commands, e-mail: log4j-user-help@logging.apache.org
>
>
--
James A. N. Stauffer http://www.geocities.com/stauffer_james/
Are you good? Take the test at http://www.livingwaters.com/good/
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