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From "Aaron Kimball (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6370) Contrib project ivy dependencies are not included in binary target
Date Mon, 11 Jan 2010 20:15:54 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6370?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12798840#action_12798840
] 

Aaron Kimball commented on HADOOP-6370:
---------------------------------------

Steve, I think that only applies to conflicts within a given module's (transitive) dependency
set.  Looking at the ivy docs, I can't see a way to do multiple {{ivy:resolve}} calls in the
same build. Performing a resolve will set some ant build properties and attempting to override
these (e.g., by doing a base-hadoop resolve and then a contrib module's resolve) will fail.
There's also no way to specify multiple ivy.xml files, nor is there a way to look at the artifact
jars that (may) already exist in another directory (e.g., the ivy cache for the base-hadoop
project).

I think that eventually auto-detecting these problems is a good goal, but I think for now
the status quo of "contrib owners are responsible for dealing with their own version conflicts"
isn't going to change. I don't see a straightforward technical means of dealing with this.

> Contrib project ivy dependencies are not included in binary target
> ------------------------------------------------------------------
>
>                 Key: HADOOP-6370
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6370
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: build
>            Reporter: Aaron Kimball
>            Assignee: Aaron Kimball
>            Priority: Critical
>         Attachments: HADOOP-6370.2.patch, HADOOP-6370.patch
>
>
> Only Hadoop's own library dependencies are promoted to ${build.dir}/lib; any libraries
required by contribs are not redistributed.

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