Chetan Mehrotra created SLING-3340:
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Summary: Warnings on startup regarding no-op loggers
Key: SLING-3340
URL: https://issues.apache.org/jira/browse/SLING-3340
Project: Sling
Issue Type: Bug
Components: Commons
Affects Versions: Commons Log 4.0.0
Reporter: Chetan Mehrotra
Assignee: Chetan Mehrotra
Depening on the order in which bundles are installed Slf4j might use NoOp
loggers for loggers created before Logback is initialized. One would see a
warning log like below
{noformat}
Slf4j is not initialized yet. Delaying Logback support initialization
SLF4J: The following loggers will not work because they were created
SLF4J: during the default configuration phase of the underlying logging system.
SLF4J: See also http://www.slf4j.org/codes.html#substituteLogger
SLF4J: org.apache.sling.commons.logservice
SLF4J: org.apache.sling.installer.core
SLF4J: org.apache.sling.installer.core.impl.OsgiInstallerImpl
SLF4J: org.apache.sling.audit.osgi.installer
SLF4J: org.apache.sling.installer.core.impl.PersistentResourceList
SLF4J: org.apache.sling.installer.core.impl.EntityResourceList
SLF4J: org.apache.sling.installer.core.impl.tasks.BundleTaskCreator
SLF4J: org.apache.sling.installer.core.impl.DefaultTransformer
SLF4J: org.apache.sling.installer.provider.file
SLF4J: org.apache.sling.installer.provider.file.impl.ServicesListener
SLF4J: org.apache.sling.installer.provider.file.impl.FileInstaller
SLF4J: org.apache.sling.javax.activation
SLF4J: org.apache.sling.javax.activation.internal.Activator
SLF4J: org.apache.sling.javax.activation.internal.OsgiMailcapCommandMap
SLF4J: org.apache.sling.launchpad.installer
SLF4J: org.apache.sling.settings
SLF4J: org.apache.sling.settings.impl.SlingSettingsServiceImpl
SLF4J: org.apache.sling.launchpad.installer.impl.LaunchpadConfigInstaller
SLF4J: org.apache.sling.installer.core.impl.tasks.RestartActiveBundlesTask
{noformat}
Given that log from Sling installer category are important and should not be
lost we should avoid such scenario to be created.
See thread http://markmail.org/thread/n4zyj5akkh24ahh5
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