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Posted to common-issues@hadoop.apache.org by "Steve Loughran (JIRA)" <ji...@apache.org> on 2010/06/03 15:48:00 UTC

[jira] Commented: (HADOOP-6800) Harmonize JAR library versions

    [ https://issues.apache.org/jira/browse/HADOOP-6800?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12875113#action_12875113 ] 

Steve Loughran commented on HADOOP-6800:
----------------------------------------

+1 for this; I'd go for moving to the latest versions that didn't cause too much grief. 

HADOOP-6807 claims that SL4J is not needed for Jetty



> Harmonize JAR library versions
> ------------------------------
>
>                 Key: HADOOP-6800
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6800
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Tom White
>            Priority: Blocker
>             Fix For: 0.21.0
>
>
> Currently, multiple versions of the same library JAR are being pulled in for various reasons.
> * Within the same project, multiple versions of the same JAR are pulled in. E.g. Avro (used by Common) depends on Commons Lang 2.5 while Common depends on Commons Lang 2.4.
> * Dependent subprojects use different versions. E.g. Common depends on Avro 1.3.2 while MapReduce depends on 1.3.0. Since MapReduce depends on Common, this has the potential to cause a problem at runtime.

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