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https://issues.apache.org/jira/browse/LOG4J2-2517?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16710437#comment-16710437
 ] 

Jon Hanson edited comment on LOG4J2-2517 at 12/5/18 6:20 PM:
-------------------------------------------------------------

Trying to do that but it fails to build:

{{[ERROR] Failed to execute goal 
org.apache.maven.plugins:maven-toolchains-plugin:1.1:toolchain (default) on 
project log4j-api-java9: Cannot find matching toolchain definitions for the 
following toolchain types:}}
 {{[ERROR] jdk [ version='[9, )' ]}}
 {{[ERROR] Please make sure you define the required toolchains in your 
~/.m2/toolchains.xml file.}}
 {{[ERROR] -> [Help 1]}}

Is there an shortcut to building the core project without Java 9, Mongo et 
al...?

*EDIT*

i've commented out all but these 4 modules :

{{<module>log4j-api</module>}}
{{<module>log4j-core</module>}}
{{<module>log4j-slf4j-impl</module>}}
{{<module>log4j-to-slf4j</module>}}


was (Author: jonhanson):
Trying to do that but it fails to build:

{{[ERROR] Failed to execute goal 
org.apache.maven.plugins:maven-toolchains-plugin:1.1:toolchain (default) on 
project log4j-api-java9: Cannot find matching toolchain definitions for the 
following toolchain types:}}
 {{[ERROR] jdk [ version='[9, )' ]}}
 {{[ERROR] Please make sure you define the required toolchains in your 
~/.m2/toolchains.xml file.}}
 {{[ERROR] -> [Help 1]}}

Is there an shortcut to building the core project without Java 9, Mongo et 
al...?

*EDIT*

{{i've commented out all but these 4 modules :}}

{{<module>log4j-api</module>}}
{{<module>log4j-core</module>}}
{{<module>log4j-slf4j-impl</module>}}
{{<module>log4j-to-slf4j</module>}}

> RollingFileManager OnStartupTriggeringPolicy never rolls the file on startup
> ----------------------------------------------------------------------------
>
>                 Key: LOG4J2-2517
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-2517
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Appenders
>    Affects Versions: 2.11.1
>            Reporter: Jon Hanson
>            Priority: Minor
>         Attachments: log4j2.json
>
>
> I'm trying to get log4j2 (V2.11.1) to roll the existing log file at startup 
> before it starts logging into a new file. My config is atached to the jira. 
> I'm using a RollingFileManager with a OnStartupTriggeringPolicy with 
> minSize=0, which, according to the documentation should be sufficient.
> However what i'm finding is that at startup, the 
> {{OnStartupTriggeringPolicy}} class {{initialize}} method compares the 
> timestamp of the log file to the JVM startup, and if the log file time is 
> after the start-up time then it won't roll the file. If I step through the 
> code then I see that at the point that check is made the file time is always 
> after the JVM start time, because log4j2 appears to have already opened the 
> file for writing at that point.
> More info here:
> [https://stackoverflow.com/questions/53632091/log4j2-rollingfilemanager-onstartuptriggeringpolicy-never-rolls-the-file-on-star]
>  



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