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From "Tom White (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-6800) Harmonize JAR library versions
Date Wed, 16 Jun 2010 19:16:24 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-6800?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tom White updated HADOOP-6800:
------------------------------

    Attachment: HADOOP-6800.patch

This is one of three patches (others at HDFS-1212, MAPREDUCE-1870) that removes duplicate
JARs. It updates a few Apache Commons JARs, JUnit, and SLF4J.

The hardest bit was ensuring that Ant 1.6.5 and 1.7.1 don't both appear. Part of the problem
here is that the Maven artifact has been relocated from the ant group to org.apache.ant. Jetty's
jsp-2.1 depends on the old one, which is now explicitly excluded.

I ran a few tests with the new configuration and they passed. I also used the script in HADOOP-6342
to test that the combined tarballs had no conflicting dependencies. 

> 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
>
>         Attachments: HADOOP-6800.patch
>
>
> 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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