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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-3305) Publish hadoop-core to the apache repository with an appropriate POM file
Date Thu, 24 Apr 2008 12:27:21 GMT
Publish hadoop-core to the apache repository with an appropriate POM file
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                 Key: HADOOP-3305
                 URL: https://issues.apache.org/jira/browse/HADOOP-3305
             Project: Hadoop Core
          Issue Type: New Feature
          Components: build
    Affects Versions: 0.16.3, 0.16.2
            Reporter: Steve Loughran
            Priority: Minor


To let people downstream build/test with hadoop, using Apache Ivy or Apache Maven2 to pull
it down, hadoop-core needs to be published to the apache repository with a .pom file that
lists its mandatory dependencies.

In an automated build process, this means
-having a template XML pom defining all included dependencies (and excluded transient dependency
artifacts)
-having a property file driving version numbering of all artifacts
-copying this template with property expansion to create the release POM file
-public releases only: sticking this POM file up on people.apache.org in the right place,
along with the JAR and some .md5 checksums

There's a risk that if the hadoop team dont do this, someone else will (as mahout are doing
under http://people.apache.org/~kalle/mahout/maven2/org/apache/hadoop/ )
This is bad as hadoop end up fielding the support calls from someone elses files. 

Before automating the process, existing hadoop-core JARs can be pushed out with hand-encoded
POM files. The repository police dont allow pom files ever to be changed, so supporting existing
releases (.16.2, 0.16.3 ... ) is a way of beta testing the POMs. 

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