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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6629) versions of dependencies should be specified in a single place
Date Sat, 13 Mar 2010 00:23:27 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6629?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12844775#action_12844775

Doug Cutting commented on HADOOP-6629:

> How about mavenizing Hadoop [ ... ]

That would certainly make distributing jars  to other java projects easier.  But Hadoop tends
not to be used as a pure java library, but rather also incorporates shell scripts, native
code, etc.  Perhaps someone familiar with Maven can get all these to work correctly for Hadoop?

Avro's moved to a model where the primary release artifact is a tarball of the source tree.
 Other derived, binary artifacts are also published: Java jars to maven, python eggs to pypi,
ruby gems, C & C++ pristine tarballs, etc.  For Hadoop, .deb and .rpm packages are useful
artifacts, but I'm not sure they'd replace the desire to also publish Maven artifacts, nor
am I convinced that Maven can build adequate .rpm or .deb packages.

So I don't yet see that Maven will satisfy all of Hadoop's build needs, but I'd be happy to
be proven wrong.

> versions of dependencies should be specified in a single place
> --------------------------------------------------------------
>                 Key: HADOOP-6629
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6629
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: build
>            Reporter: Doug Cutting
>            Assignee: Doug Cutting
>         Attachments: HADOOP-6629.patch, HADOOP-6629.patch
> Currently the Maven POM file is generated from a template file that includes the versions
of all the libraries we depend on.  The versions of these libraries are also present in ivy/libraries.properties,
so that, when a library is updated, it must be updated in two places, which is error-prone.
 We should instead only specify library versions in a single place.

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