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https://issues.apache.org/jira/browse/HIVE-4305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13636112#comment-13636112
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Carl Steinbach commented on HIVE-4305:
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GUYS! Turns out before you can run 'mvn eclipse:eclipse' from the root
directory you first have to cd into the hadoop-maven-plugins directory
and run 'mvn install' from there. Then you cd back up a level
and run 'mvn eclipse:eclipse' and it JUST WORKS! After that I imported
all of this stuff into eclipse and that JUST WORKED too! Convention
over configuration for the win! Please forgive me for being such a n00b
earlier. Some of these conventions just take a bit of time to pick up.

The thing that sucks the most about using Maven is that it makes you forget
how broken everything else is. Like after I finished importing the code
(thanks Maven!) eclipse is now complaining about 2,501 errors and a bunch
of unsatisfied dependencies on classes in the oah.ipc.protobuf namespace.
I think that last part is a good clue that it's an eclipse bug because maven
invented dependency management and everyone knows it just works!
                
> Use a single system for dependency resolution
> ---------------------------------------------
>
>                 Key: HIVE-4305
>                 URL: https://issues.apache.org/jira/browse/HIVE-4305
>             Project: Hive
>          Issue Type: Improvement
>          Components: Build Infrastructure, HCatalog
>            Reporter: Travis Crawford
>            Assignee: Carl Steinbach
>
> Both Hive and HCatalog use ant as their build tool. However, Hive uses ivy 
> for dependency resolution while HCatalog uses maven-ant-tasks. With the 
> project merge we should converge on a single tool for dependency resolution.

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