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Posted to log4j-dev@logging.apache.org by "Remko Popma (JIRA)" <ji...@apache.org> on 2014/08/06 16:21:12 UTC
[jira] [Updated] (LOG4J2-765) Feature request: log warning to
console if default configuration is used when missing log4j-core
[ https://issues.apache.org/jira/browse/LOG4J2-765?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Remko Popma updated LOG4J2-765:
-------------------------------
Summary: Feature request: log warning to console if default configuration is used when missing log4j-core (was: Feature request: log warning to console if default configuration is used)
LogManager already emits a warning if no implementation of the Log4j2 API can be found. I will use this Jira ticket to improve that warning message, and use LOG4J2-729 for the warning message when no configuration file is found.
> Feature request: log warning to console if default configuration is used when missing log4j-core
> ------------------------------------------------------------------------------------------------
>
> Key: LOG4J2-765
> URL: https://issues.apache.org/jira/browse/LOG4J2-765
> Project: Log4j 2
> Issue Type: Improvement
> Components: API, Configurators, Core
> Affects Versions: 2.0, 2.0.1
> Reporter: Remko Popma
>
> To summarize a recent twitter conversation:
> a user became very frustrated that Log4j2 did not log to the configured file, and gave up and moved on to JUL instead.
> After some questions it turned out that (probably) the problem was that they had log4j-api but not log4j-core in the classpath.
> We can dismiss this saying that users should read the documentation better, but users are in a hurry to get things done and I can easily see this happening to more people.
> In the above conversation, the user pointed out that very likely, if someone ends up with the default configuration (log ERROR level messages to the console), they made a mistake.
> The feature request is that log4j should help users by printing a message to the console that explains why the user ended up with the default configuration.
> * In case log4j-core not in the classpath: {{Log4j2 could not find a logging implementation. Please add log4j-core to the classpath. Using SimpleLogger to log to the console...}}
> * In case no config file was found: {{No log4j2 configuration file found. Using default configuration: errors to the console.}}
> This last case is actually a frequent cause of questions on StackOverflow.
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