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https://issues.apache.org/jira/browse/ZOOKEEPER-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17202031#comment-17202031
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Ljubo Mamic commented on ZOOKEEPER-2342:
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Hi,
Migrating log4j inside of zookeeper turned out to not be that complicated,
provided patches on this Jira are helpful, you just have to adapt them to your
zookeeper version and follow the same logic.
It's possible!
BRs, Ljubo
> Migrate to Log4J 2.
> -------------------
>
> Key: ZOOKEEPER-2342
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2342
> Project: ZooKeeper
> Issue Type: Bug
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Priority: Major
> Fix For: 3.7.0
>
> Attachments: ZOOKEEPER-2342.001.patch
>
>
> ZOOKEEPER-1371 removed our source code dependency on Log4J. It appears that
> this also removed the Log4J SLF4J binding jar from the runtime classpath.
> Without any SLF4J binding jar available on the runtime classpath, it is
> impossible to write logs.
> This JIRA investigated migration to Log4J 2 as a possible path towards
> resolving the bug introduced by ZOOKEEPER-1371. At this point, we know this
> is not feasible short-term. This JIRA remains open to track long-term
> migration to Log4J 2.
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