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https://issues.apache.org/jira/browse/LOG4J2-1108?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14720423#comment-14720423
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Ralph Goers edited comment on LOG4J2-1108 at 8/28/15 7:23 PM:
--------------------------------------------------------------
This is not correct. You can't modify a Logger to point to a different
LoggerConfig just because the level is now null. That could possible change
what filters and appenders are used. What probably should happen here is that
the LoggerConfig object is modified to have its level set to the level of its
parent. Another option would be to do
{code}
config = new PrivateConfig(config,
config.loggerConfig().getParent().getLevel());
{code}
was (Author: [email protected]):
This is not correct. You can't modify a Logger to point to a different
LoggerConfig just because the level is now null. That could possible change
what filters and appenders are used. What probably should happen here is that
the LoggerConfig object is modified to have its level set to the level of its
parent.
> NullPointerException when passing null to java.util.logging.Logger.setLevel()
> -----------------------------------------------------------------------------
>
> Key: LOG4J2-1108
> URL: https://issues.apache.org/jira/browse/LOG4J2-1108
> Project: Log4j 2
> Issue Type: Bug
> Components: JUL adapter
> Affects Versions: 2.4
> Environment:
> -Djava.util.logging.manager=org.apache.logging.log4j.jul.LogManager
> Reporter: Mikael Ståldal
> Assignee: Gary Gregory
> Priority: Blocker
> Fix For: 2.4
>
> Attachments: setlevel.patch
>
>
> When using a 3rd party library (Twitter Finagle) which uses a custom
> java.util.logging.Level, I get this:
> {code}
> Exception in thread "main" java.lang.NullPointerException
> at
> java.util.concurrent.ConcurrentHashMap.hash(ConcurrentHashMap.java:333)
> at
> java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:988)
> at
> org.apache.logging.log4j.jul.DefaultLevelConverter.toLevel(DefaultLevelConverter.java:119)
> at
> org.apache.logging.log4j.jul.LevelTranslator.toLevel(LevelTranslator.java:72)
> at
> org.apache.logging.log4j.jul.CoreLogger.setLevel(CoreLogger.java:47)
> at com.twitter.logging.Logger.setLevel(Logger.scala:63)
> {code}
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