Máté Kovács created LOGBACK-1429:
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Summary: MarkerFactory.getMarkert(..) doubles logger root, creates
extra logger congext
Key: LOGBACK-1429
URL: https://jira.qos.ch/browse/LOGBACK-1429
Project: logback
Issue Type: Bug
Components: logback-classic, logback-core
Affects Versions: 1.3.0-alpha4
Environment: uname -a
Linux mate-Latitude-5580 4.15.0-36-generic #39-Ubuntu SMP Mon Sep 24 16:19:09
UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -version
openjdk version "10.0.2" 2018-07-17
OpenJDK Runtime Environment (build 10.0.2+13-Ubuntu-1ubuntu0.18.04.2)
OpenJDK 64-Bit Server VM (build 10.0.2+13-Ubuntu-1ubuntu0.18.04.2, mixed mode)
Command line running the code is:
/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java
-javaagent:/home/mate/work/idea-IC-181.5281.24/lib/idea_rt.jar=45441:/home/mate/work/idea-IC-181.5281.24/bin
-Dfile.encoding=UTF-8 -classpath
/home/mate/work/trials/doubleLoggerRoot/out/production/doubleLoggerRoot:/home/mate/.m2/repository/ch/qos/logback/logback-classic/1.3.0-alpha4/logback-classic-1.3.0-alpha4.jar:/home/mate/.m2/repository/ch/qos/logback/logback-core/1.3.0-alpha4/logback-core-1.3.0-alpha4.jar:/home/mate/.m2/repository/org/slf4j/slf4j-api/1.8.0-beta1/slf4j-api-1.8.0-beta1.jar:/home/mate/.m2/repository/com/sun/mail/javax.mail/1.6.0/javax.mail-1.6.0.jar:/home/mate/.m2/repository/javax/activation/activation/1.1/activation-1.1.jar
hu.alerant.Main
Reporter: Máté Kovács
Assignee: Logback dev list
Priority: Critical
Calling MarkerFactory.getMarker("any marker") doubles the logger root, and the
logger context. If you want to obtain loggers created before the marker using
the factory, you will get new instances.
Here is an example code:
{code:java}
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.Marker;
import org.slf4j.MarkerFactory;
public class Main {
public static void main(String[] args) {
Logger l1 = LoggerFactory.getLogger(Main.class);
Logger l2 = LoggerFactory.getLogger(Main.class);
if(l1==l2) {
System.out.println("The first two loggers are the same");
}
Marker newMarker = MarkerFactory.getMarker("NewMarker");
Logger l3 = LoggerFactory.getLogger(Main.class);
if(l1==l3) {
System.out.println("l1==l3");
} else {
System.out.println("l1!=l3");
}
}
}{code}
Here is the output on my machine:
{noformat}
The first two loggers are the same
l1!=l3{noformat}
The above code proves that you can obtain the same logger from the factory
multiple times. However, after you instantiate a marker using the factory, you
will get new instances instead of the old ones.
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