In logback 1.1.7, BeanDescriptionFactory was introduced in this commit.

BeanDescriptionFactory incorrectly prints the following warnings for classes containing bridge methods:

Warning: Class '%s' contains multiple setters for the same property '%s'.
Warning: Class '%s' contains multiple adders for the same property '%s'.

BeanDescriptionFactory should ignore bridge methods.

This could be fixed easily by adding:

if (method.isBridge()) {
    continue;
}

in the for loop, before the first if condition.

This can be reproduced by using a class with a bridge method in logback's configuration. For example:

public class ConfigFoo<T> {
    private T bar;
    public void setBar(T bar) {
        this.bar = bar;
    }
}

public class IntegerConfigFoo extends ConfigFoo<T> {
    public void setBar(Integer bar) {
        super.setBar(bar);
        // do something else
    }
}

In this case IntegerConfigFoo will have a setBar(Object) bridge method AND a setBar(Integer) method. Logback should ignore the setBar(Object) bridge method.

This is causing issues for logstash-logback-encoder