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Posted to common-issues@hadoop.apache.org by "Duo Zhang (Jira)" <ji...@apache.org> on 2021/03/20 14:02:00 UTC

[jira] [Commented] (HADOOP-16206) Migrate from Log4j1 to Log4j2

    [ https://issues.apache.org/jira/browse/HADOOP-16206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17305441#comment-17305441 ] 

Duo Zhang commented on HADOOP-16206:
------------------------------------

HBase has already migrated from log4j1 to log4j2 on master branch, and expect to ship it with 3.0.0 release.

The most painful thing when migrating is the log4j1 dependency of hadoop if we want to start mini cluster for testing. Even the log4j-1.2-api can not solve all the problem as we extend the log4j1 FileAppender for implementing special appender for container...

I would offer my help here but I'm not sure what is the current direction. Do we want to replace all the old log4j1 config files with log4j2 config files, or we just want to use the log4j-1.2-api to switch the logging framework to log4j2 but still retain the old config files? Or we have other plans here?

Thanks.

> Migrate from Log4j1 to Log4j2
> -----------------------------
>
>                 Key: HADOOP-16206
>                 URL: https://issues.apache.org/jira/browse/HADOOP-16206
>             Project: Hadoop Common
>          Issue Type: Sub-task
>    Affects Versions: 3.3.0
>            Reporter: Akira Ajisaka
>            Priority: Major
>         Attachments: HADOOP-16206-wip.001.patch
>
>
> This sub-task is to remove log4j1 dependency and add log4j2 dependency.



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