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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12956) Inevitable Log4j2 migration via slf4j
Date Wed, 23 Mar 2016 21:22:25 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12956?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15209198#comment-15209198
] 

Steve Loughran commented on HADOOP-12956:
-----------------------------------------

This may be unrelated with a move to SLF4J, if commons-logging supports log4j2.x. We could
do that migration today on a package by package basis, with the low-cost approach just being
to change the type of the logger, without going through the log statements and redoing them.

Back end wise, lets look at your ZK move first

> Inevitable Log4j2 migration via slf4j
> -------------------------------------
>
>                 Key: HADOOP-12956
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12956
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Gopal V
>
> {{5 August 2015 --The Apache Logging Services™ Project Management Committee (PMC) has
announced that the Log4j™ 1.x logging framework has reached its end of life (EOL) and is
no longer officially supported.}}
> https://blogs.apache.org/foundation/entry/apache_logging_services_project_announces
> A whole framework log4j2 upgrade has to be synchronized, partly for improved performance
brought about by log4j2.
> https://logging.apache.org/log4j/2.x/manual/async.html#Performance



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