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Posted to hdfs-issues@hadoop.apache.org by "Scott Carey (Commented) (JIRA)" <ji...@apache.org> on 2012/03/23 21:59:26 UTC

[jira] [Commented] (HDFS-3136) Multiple SLF4J binding warning

    [ https://issues.apache.org/jira/browse/HDFS-3136?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13237114#comment-13237114 ] 

Scott Carey commented on HDFS-3136:
-----------------------------------

It appears that in the old case, the problem is that slf4j-log4j12 was specified wrong.  It should always be specified as <optional>true</optional> or baring that, <scope>provided</scope> is acceptable but can lead to some multiple binding errors during unit tests (but not deployment).  

It appears that it is not needed at all however -- is this because all of Hadoop is moving away from SLF4J?


                
> Multiple SLF4J binding warning
> ------------------------------
>
>                 Key: HDFS-3136
>                 URL: https://issues.apache.org/jira/browse/HDFS-3136
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: build
>    Affects Versions: 0.23.0
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>         Attachments: HDFS-3136.patch
>
>
> This is the HDFS portion of HADOOP-8005.  HDFS no longer depends upon slf4j, so removing it from the assembly will eliminate the HDFS-portion of the multiple SLF4J warnings.

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