logstash/log4j-jsonevent-layout

Layout not assignable

cdgraff opened this issue · 2 comments

cdgraff commented

Hi Guys,

I'm trying to use this jar, and when start the instance get this error:

log4j:ERROR A "net.logstash.log4j.JSONEventLayout" object is not assignable to a "org.apache.log4j.Layout" variable.
log4j:ERROR The class "org.apache.log4j.Layout" was loaded by
log4j:ERROR [WebappClassLoader
context:
delegate: false
repositories:
/WEB-INF/classes/
----------> Parent Classloader:
org.apache.catalina.loader.StandardClassLoader@2107ebe1
] whereas object of type
log4j:ERROR "net.logstash.log4j.JSONEventLayout" was loaded by [org.apache.catalina.loader.StandardClassLoader@2107ebe1].

I'm using the latest Git version, some advice?

Thanks

cdgraff commented

Fixed, the same log4j library into the webapp and the tomcat lib, removed from webapp the error was fixed

veetow commented

I think this is an actual issue. I can't get the logger to function unless all log4j jar files are removed from the class path entirely. Only the jsonevent layout jar must exist on the class path.