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From "David Arthur (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (KAFKA-524) Kafka Appender causes Log4j Deadlock
Date Thu, 14 Feb 2013 17:08:12 GMT

     [ https://issues.apache.org/jira/browse/KAFKA-524?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

David Arthur updated KAFKA-524:

    Attachment: 0001-KAFKA-524-Defer-creating-Producer-in-log4j-appender.patch

v2 of the patch
> Kafka Appender causes Log4j Deadlock
> ------------------------------------
>                 Key: KAFKA-524
>                 URL: https://issues.apache.org/jira/browse/KAFKA-524
>             Project: Kafka
>          Issue Type: Sub-task
>    Affects Versions: 0.7.2
>            Reporter: nicu marasoiu
>              Labels: patch
>             Fix For: 0.7.2
>         Attachments: 0001-KAFKA-524-Defer-creating-Producer-in-log4j-appender.patch,
> If you remove all log4j.properties from classpath (and prvent any log4j intialization
previous to the one which involves kafka appender), and put KAFKA appender on rootLogger,
then, even if you exclude the KAFKA appender from logger.kafka and logger.org, you get a Log4j
deadlock when zookeeper send thread tries to issue a LOG.info, and for that it locks the root
category (as its correct category, say org, is not yet set up in log4j, who is still in activateOptions
on kafka appender).
> please read comments on the parent and ask any questions to nmarasoi@adobe.com

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