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https://issues.apache.org/jira/browse/HDFS-201?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jean-Baptiste Onofré updated HDFS-201:
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Attachment: HDFS-201.patch
Patch turning HDFS as an OSGi bundle, and providing a hadoop-hdfs Karaf feature.
> Spring and OSGi support
> -----------------------
>
> Key: HDFS-201
> URL: https://issues.apache.org/jira/browse/HDFS-201
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: Jon Brisbin
> Assignee: Jean-Baptiste Onofré
> Attachments: HDFS-201.patch
>
>
> I was able to compile 0.18.2 in eclipse into a new OSGi bundle using eclipse
> PDE. Using Spring to control the HDFS nodes, however, seems out of the
> question for the time being because of inter-dependencies between packages
> that should be separate OSGi bundles (for example, SecondaryNameNode includes
> direct references to StatusHttpServer, which should be in a bundle with a
> "web" personality that is separate from Hadoop Core). Looking through the
> code that starts the daemons, it would seem code changes are necessary to
> allow for components to be dependency-injected. Rather than instantiating a
> StatusHttpServer inside the SecondaryNameNode, that reference should (at the
> very least) be able to be dependency-injected (for example from an OSGi
> service from another bundle). Adding setters for infoServer would allow that
> reference to be injected by Spring. This is just an example of the changes
> that would need to be made to get Hadoop to live happily inside an OSGi
> container.
> As a starting point, it would be nice if Hadoop core was able to be split
> into a client bundle that could be deployed into OSGi containers that would
> provide client-only access to HDFS clusters.
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