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From Mikael Ståldal (JIRA) <j...@apache.org>
Subject [jira] [Commented] (LOG4J2-1588) Console or File Logger caches thread name, but not in older log4j2 versions
Date Fri, 30 Sep 2016 12:36:20 GMT

    [ https://issues.apache.org/jira/browse/LOG4J2-1588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15535875#comment-15535875
] 

Mikael Ståldal commented on LOG4J2-1588:
----------------------------------------

Maybe you can use Thread Content Map (also known as MDC) instead: http://logging.apache.org/log4j/2.x/manual/thread-context.html

Use the {{%X}} pattern instead of {{%t}}.

> Console or File Logger caches thread name, but not in older log4j2 versions
> ---------------------------------------------------------------------------
>
>                 Key: LOG4J2-1588
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-1588
>             Project: Log4j 2
>          Issue Type: Bug
>    Affects Versions: 2.6.2
>         Environment: Windows, Grizzly HTTP container, SLF4J API, Log4j2
>            Reporter: Rainer Schnitker
>
> Log4j2 2.6.x seems to cache the thread name. A revert to version 2.4.1. works! This affects
synchronous logger: console, RollingFile
> My sample code (JAX-RS Filter):
> {code}
> import java.io.IOException;
> import javax.annotation.Priority;
> import javax.inject.Inject;
> import javax.ws.rs.container.ContainerRequestContext;
> import javax.ws.rs.container.ContainerRequestFilter;
> import javax.ws.rs.ext.Provider;
> import org.glassfish.grizzly.http.server.Request;
> import org.slf4j.LoggerFactory;
> @Provider
> @Priority(Integer.MIN_VALUE)
> public class GrizzlyRequestFilter implements ContainerRequestFilter {
>     @Inject
>     javax.inject.Provider< Request > provider;
>     @Override
>     public void filter( ContainerRequestContext requestContext ) throws IOException {
>         Request request = this.provider.get();
>         Thread thread = Thread.currentThread();
>         thread.setName( request.getRemoteHost() + '/' + thread.getId() );
>         
>         // oops: logger thread name != expected
>         LoggerFactory.getLogger(GrizzlyRequestFilter.class)
>             .info( "expected thread name:" + request.getRemoteHost() + '/' + thread.getId()
);
>         
>     }
> }
> {code}



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