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From "Konstantin Boudnik (Resolved) (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-798) Exclude second Ant JAR from classpath in hdfs builds
Date Mon, 02 Apr 2012 06:16:44 GMT

     [ https://issues.apache.org/jira/browse/HDFS-798?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Konstantin Boudnik resolved HDFS-798.

    Resolution: Won't Fix

People are concerned about some weird side-effects that this fix has in Eclipse environment.
> Exclude second Ant JAR from classpath in hdfs builds
> ----------------------------------------------------
>                 Key: HDFS-798
>                 URL: https://issues.apache.org/jira/browse/HDFS-798
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: build
>    Affects Versions: 0.22.0
>            Reporter: Steve Loughran
>            Assignee: Konstantin Boudnik
>            Priority: Minor
>         Attachments: HDFS-798.patch
> I've no evidence that this is a problem, but I have known it to be in different projects:
> {code}
>     [junit] WARNING: multiple versions of ant detected in path for junit 
>     [junit]          jar:file:/Users/slo/Java/Apache/ant/lib/ant.jar!/org/apache/tools/ant/Project.class
>     [junit]      and jar:file:/Users/slo/.ivy2/cache/ant/ant/jars/ant-1.6.5.jar!/org/apache/tools/ant/Project.class
> {code}
> Somehow Ivy needs to be set up to skip pulling in an old version of Ant in the build
-both paranamer-ant and jsp-2.1 declare a dependency on it. If both tools are only ever run
under Ant, the ivy.xml file could exclude it, the build file just has to make sure that Ant's
own classpath gets passed down.

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