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From "Jed Wesley-Smith (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LOG4J2-169) LogManager.getLogger doesn't work
Date Mon, 25 Feb 2013 23:50:12 GMT

     [ https://issues.apache.org/jira/browse/LOG4J2-169?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jed Wesley-Smith updated LOG4J2-169:
------------------------------------

    Summary: LogManager.getLogger doesn't work  (was: ConfigurationFactory is not thread-safe)
    
> LogManager.getLogger doesn't work
> ---------------------------------
>
>                 Key: LOG4J2-169
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-169
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.0-beta4
>            Reporter: Jed Wesley-Smith
>            Priority: Critical
>              Labels: thread-safety
>
> We randomly get the following:
> java.util.ConcurrentModificationException
> 	at org.apache.logging.log4j.core.config.ConfigurationFactory$Factory.getConfiguration(ConfigurationFactory.java:377)
> 	at org.apache.logging.log4j.core.config.ConfigurationFactory$Factory.getConfiguration(ConfigurationFactory.java:361)
> 	at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:266)
> 	at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:134)
> 	at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:75)
> 	at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:30)
> 	at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:165)
> 	at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:174)
> 	at …
> factories is defined as:
>     private static List<ConfigurationFactory> factories = new ArrayList<ConfigurationFactory>();
> The simple fix is to use a java.util.concurrent.CopyOnWriteArrayList:
>     private static final List<ConfigurationFactory> factories = new CopyOnWriteArrayList<ConfigurationFactory>();
> https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk/core/src/main/java/org/apache/logging/log4j/core/config/ConfigurationFactory.java

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