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https://issues.apache.org/jira/browse/LOG4J2-808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14118841#comment-14118841
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Ralph Goers edited comment on LOG4J2-808 at 9/2/14 10:25 PM:
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I definitely don't understand what you are trying to achieve.

What makes you think it is overriding onMatch?  As I said, ACCEPT means that 
the event will be logged by the Appender.  NEUTRAL means that the result is 
indeterminate and other filters should be checked. If no other filter DENYs the 
event it will be logged.   So by having ACCEPT & NEUTRAL with no other filters 
you are saying to log everything.

To be clear - when your regex matches the event is going to be logged due to 
the ACCEPT. When the regex does not match the event is going to be logged 
because nothing told it not to log it.  Since your example has two appenders 
that both have the same regex filter and both appenders are referenced, both 
appenders are going to log everything.

I guess I just don't understand the way you think it is supposed to work.


was (Author: [email protected]):
I definitely don't understand what you are trying to achieve.

What makes you think it is overriding onMatch?  As I said, ACCEPT means that 
the event will be logged by the Appender.  NEUTRAL means that the result is 
indeterminate and other filters should be checked. If no other filter DENYs the 
event it will be logged.   So by having ACCEPT & NEUTRAL with no other filters 
you are saying to log everything.

I guess I just don't understand the way you think it is supposed to work.

> RegexFilter does not work properly with RollingFileAppenders 
> -------------------------------------------------------------
>
>                 Key: LOG4J2-808
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-808
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Filters
>    Affects Versions: 2.0-rc1
>            Reporter: Pranav Pratap
>              Labels: newbie
>             Fix For: 2.0-rc1
>
>         Attachments: HelloWorld.java, MainApp.java, log4j2.xml
>
>
> I am trying to use Regexfilter in RollingFileAppender. For 1st matching 
> instance it retreived the logger, but after that I different patttern but 
> nothing is logged in the file. Here is what I am using:
> {code}
> Main Class:
> public class MainApp {
>     /** 
>      * @param args
>      */
>      public static void main(String[] args) {
>          // TODO Auto-generated method stub
>       final Logger logger = LogManager.getLogger(MainApp.class.getName());
>       
>       ApplicationContext context = new 
> ClassPathXmlApplicationContext("Beans.xml");
>               
>         HelloWorld obj = (HelloWorld) context.getBean("helloWorld");
>         logger.trace("NPF:Trace:Entering Log4j2 Example.");
>         logger.debug("NTL:debug Entering Log4j2 Example.");
>         obj.getMessage();     
>         Company comp = new Company();
>         comp.setCompName("ANC");
>         comp.setEstablish(1889);
>      
>         CompanyBusiness compBus =      
> (CompanyBusiness)context.getBean("compBus");
>         compBus.finaceBusiness(comp.getCompName(), comp.getEstablish());
>         logger.trace("NTL: Trace: Exiting Log4j2 Example.");
>     }
> }
> {code}
> log4j2.xml:
> {code}
> <?xml version="1.0" encoding="UTF-8" ?>
> <Configuration>
>       <Appenders>
>              <Console name="STDOUT" target="SYSTEM_OUT">
>                  <PatternLayout pattern="%d{yyyy-MM-dd [%t] HH:mm:ss} %-5p 
> %c{1}:%L - %m%X%n" />
>           </Console>
>           <RollingFile name="RollingFile" 
> fileName="C:\logTest\runtime\tla\els3.log"  append="true"
>                               
> filePattern="C:\logTest\runtime\tla\els3-%d{yyyy-MM-dd}-%i.log" >
>                 <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level 
> %logger{36} - %m%X%n" />
>                 <RegexFilter regex=".*business*." onMatch="ACCEPT" 
> onMismatch="DENY"/>        
>                 <Policies>
>                     <SizeBasedTriggeringPolicy size="20 MB" />
>                 </Policies>           
>             </RollingFile>            
>       </Appenders>
>       <Loggers>
>               <Logger name="com.anc" level="trace"/>  
>               <Root level="trace"> 
>                   <AppenderRef ref="STDOUT" /> 
>                   <AppenderRef ref="RollingFile"/> 
>               </Root> 
>       </Loggers>
> </Configuration>
> {code}
> When I ran for the first time, in my logfile I got logs having only 
> "business" related line. Latter I changed the patter from .*business*. to 
> "business", logging did not happen in file nor on the console. Also my 
> application terminated without any kind of logging.
> Then I tried to revert back the pattern to .*business*., thereafter no 
> logging happened on the log file, but on the console all the log trace is 
> printed. When I comment out the Regexfilter after trying for long time, my 
> logs was printed in the log file.
> I am not sure if this is a bug of Regexfilter works only for one time. Also 
> if we do not pass any patter matching characters, the application stops 
> without any log printing either on console or file.



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