FAQ
Log directly from jetty to commons logging, bypassing SLF4J
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Key: HADOOP-6807
URL: https://issues.apache.org/jira/browse/HADOOP-6807
Project: Hadoop Common
Issue Type: Improvement
Components: io
Affects Versions: 0.21.0
Reporter: Steve Loughran
Priority: Minor


Jetty may default to logging through SLF4J, but don't actually need it; you can provide your own logger which goes straight to commons-logging, I've done something similar in the past:

[[http://smartfrog.svn.sourceforge.net/viewvc/smartfrog/trunk/core/components/jetty/src/org/smartfrog/services/jetty/log/]]

You just need to point jetty at the relevant logger by setting up the relevant JVM property, such as {{-Dorg.mortbay.log.class=org.smartfrog.services.jetty.log.JettyLogger}}. Doing something similar in Avro/Hadoop-common would eliminate SLF4J from the dependency graph, route via commons-logging and then, usually, to Log4J, so having only one log to manage. All JVM startup scripts would need to set the relevant property, it is harmless on JVMs that don't start up Jetty6+

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postedJun 3, '10 at 1:48p
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