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https://issues.apache.org/jira/browse/HADOOP-8009?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alejandro Abdelnur updated HADOOP-8009:
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Attachment: HADOOP-8009-existing-releases.patch
Patch 'HADOOP-8009-existing-releases.patch' creates the hadoop-client and
hadoop-minicluster artifacts for Hadoop 0.22.0 and Hadoop 1.0.0 releases.
I've done the patch as it would go on a new branch (ie
hadoop-client-minicluster) as those 2 versions are already released. Also, they
are Ant base so it would a bit more difficult to integrate them there as this
is Maven.
If Hadoop 0.22 and Hadoop 1.0 branches produce new releases, those releases
should be responsible for publishing their hadoop-client and hadoop-minicluster
artifacts to Maven repo.
In other words, this should be an one-off thing for 0.22.0 and 1.0.0.
The only thing we should have to do once this patch is committed is to run 'mvn
deploy' to make the artifacts available in the Maven repo.
I've tested them with Oozie.
> Create hadoop-client and hadoop-minicluster artifacts for downstream projects
> ------------------------------------------------------------------------------
>
> Key: HADOOP-8009
> URL: https://issues.apache.org/jira/browse/HADOOP-8009
> Project: Hadoop Common
> Issue Type: Improvement
> Components: build
> Affects Versions: 0.22.0, 0.23.0, 0.24.0, 0.23.1, 1.0.0
> Reporter: Alejandro Abdelnur
> Assignee: Alejandro Abdelnur
> Priority: Critical
> Fix For: 0.23.1
>
> Attachments: HADOOP-8009-existing-releases.patch, HADOOP-8009.patch
>
>
> Using Hadoop from projects like Pig/Hive/Sqoop/Flume/Oozie or any in-house
> system that interacts with Hadoop is quite challenging for the following
> reasons:
> * *Different versions of Hadoop produce different artifacts:* Before Hadoop
> 0.23 there was a single artifact hadoop-core, starting with Hadoop 0.23 there
> are several (common, hdfs, mapred*, yarn*)
> * *There are no 'client' artifacts:* Current artifacts include all JARs
> needed to run the services, thus bringing into clients several JARs that are
> not used for job submission/monitoring (servlet, jsp, tomcat, jersey, etc.)
> * *Doing testing on the client side is also quite challenging as more
> artifacts have to be included than the dependencies define:* for example, the
> history-server artifact has to be explicitly included. If using Hadoop 1
> artifacts, jersey-server has to be explicitly included.
> * *3rd party dependencies change in Hadoop from version to version:* This
> makes things complicated for projects that have to deal with multiple
> versions of Hadoop as their exclusions list become a huge mix & match of
> artifacts from different Hadoop versions and it may be break things when a
> particular version of Hadoop requires a dependency that other version of
> Hadoop does not require.
> Because of this it would be quite convenient to have the following
> 'aggregator' artifacts:
> * *org.apache.hadoop:hadoop-client* : it includes all required JARs to use
> Hadoop client APIs (excluding all JARs that are not needed for it)
> * *org.apache.hadoop:hadoop-test* : it includes all required JARs to run
> Hadoop Mini Clusters
> These aggregator artifacts would be created for current branches under
> development (trunk, 0.22, 0.23, 1.0) and for released versions that are still
> in use.
> For branches under development, these artifacts would be generated as part of
> the build.
> For released versions we would have a a special branch used only as vehicle
> for publishing the corresponding 'aggregator' artifacts.
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