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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-798) Exclude second Ant JAR from classpath in hdfs builds
Date Tue, 01 Dec 2009 15:24:20 GMT
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
            Priority: Minor


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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