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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12956) Inevitable Log4j2 migration via slf4j
Date Sat, 13 Aug 2016 17:22:22 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12956?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15419999#comment-15419999
] 

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


This is going to be fun. How about starting at discussion on common-dev &c? 

some parts of the code (hdfs-client) are now log-backend neutral. Assuming all uses of log4j
APIs are in tests, maybe some wrapper could isolate the conversion, or provide a flag to indicate
if level tuning was allowed; test cases could be skipped if not. 

someone could then do an experimental branch using logback to see what happens. It could also
allow people to jump to log4j2 sooner rather than later, if they so choose.

> 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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