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https://issues.apache.org/jira/browse/LOG4J2-2162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16311351#comment-16311351
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Ralph Goers commented on LOG4J2-2162:
-------------------------------------

[~mikaelstaldal] That would only partially address this. What is being 
requested here is to not block the application. But as I read things it is 
implied that initialization would be retried until it recovers.

> KafkaAppender fails application startup when bootstrap server are not 
> available
> -------------------------------------------------------------------------------
>
>                 Key: LOG4J2-2162
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-2162
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Appenders
>    Affects Versions: 2.8.2, 2.10.0
>         Environment: Tried on Windows 10, IDE Eclipse Oxygen
>            Reporter: Shwetank Sharma
>              Labels: kafka, newbie
>         Attachments: log4j2.xml
>
>
> When the server mentioned in bootstrap.servers property in kafka appender are 
> not available.
> For e.g. Unable to resolve DNS etc.
> The application isn't starting and the java process terminates after trying 
> to connect to the server.
> Failure to initialize the appender should not block the application process 
> and other appenders, just like file appender, for e.g. when file path is not 
> resolvable, it moves forward.
> Attached log4j2.xml. 
> Tried wrapping it in async appender as well, does not provide expected result 
> as the issue is with initialization of appender.



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