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From Mikael Ståldal (JIRA) <j...@apache.org>
Subject [jira] [Commented] (LOG4J2-1108) NullPointerException when passing null to java.util.logging.Logger.setLevel()
Date Fri, 28 Aug 2015 08:07:45 GMT

    [ https://issues.apache.org/jira/browse/LOG4J2-1108?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14718183#comment-14718183
] 

Mikael Ståldal commented on LOG4J2-1108:
----------------------------------------

According to [http://docs.oracle.com/javase/7/docs/api/java/util/logging/Logger.html], it
is only in {{setLevel()}} you are allowed to pass null as Level, so we don't have to support
null Level to the other methods in Logger (such as log(Level, ...)).

So I suggest we put the fix in {{CoreLogger.setLevel()}} and don't change {{DefaultLevelConverter}}.


> 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
>            Priority: Blocker
>
> 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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