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https://issues.apache.org/jira/browse/LOG4J2-2162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16312962#comment-16312962
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Mikael Ståldal commented on LOG4J2-2162:
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[~Shwetank] have you seen any other failure modes than DNS lookup? Can it also
fail and block application startup when server is down (but DNS lookup is
successful)? Have you tried to specify explicit IP address to avoid DNS lookup?
> 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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